JP2015007364A - High-rise building and maintenance method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform the maintenance of a building using a vertically movable scaffold without being limited by the stability of a mast or a position where the mast is erected.SOLUTION: A plurality of connection metal fittings 110 are preliminarily attached to a side wall 101 of a building 100. A sufficient number of connection metal fittings 110 are installed at a position where a mast 200 of a vertically movable scaffold is scheduled to be erected to stably support the mast 200. In the case of performing the maintenance of the building 100 by using the vertically movable scaffold, the erected mast 200 is connected via joint metal fittings 300 to the connection metal fittings 110. A scaffold 210 which vertically moves along the mast 200 is mounted on the mast 200, and an operator performs the maintenance work thereon.

Description

  The present invention relates to a method for maintaining a high-rise building. The term “building” in “high-rise building” in the present application is not limited to a building or the like that is supposed to be used by a person inside, but a person inside the building. It also includes chimneys, bridges, etc. that are not supposed to be used for their intended use. In addition, the term “high-rise” in “high-rise building” in the present application means a height at which technical difficulty occurs in the maintenance of the outer wall, that is, a height of at least 20 m.

Although not limited to high-rise buildings, maintenance of outer walls of buildings including inspection, cleaning, repainting, and the like tends to be difficult particularly in high-rise buildings.
If the building is not so high-rise, a scaffolding such as a bite scaffold may be fixed along the outer wall of the building, depending on the case, and a worker on the scaffold may perform maintenance on the building. Do. However, this method is difficult to put into practical use because the construction effort of the scaffold becomes excessive when the building is high-rise, or the construction itself of such a high-rise scaffold becomes impossible.
Under such circumstances, maintenance of high-rise buildings is generally performed by workers on a gondola suspended from the top of the building. For example, in the case of a building, a worker on a gondola suspended by a winch provided on the roof performs maintenance of the building.

  As mentioned above, it is common for workers on a gondola to perform maintenance on the building, but there are restrictions on where the gondola can be hung, and when riding on a gondola that tends to deteriorate the scaffolding due to shaking. The task is left in the point that danger is likely to occur in the work performed by the worker.

On the other hand, recently, lifting scaffolds have been applied to the maintenance of buildings. The lifting / lowering scaffold is provided with a high mast and a scaffold capable of lifting / lowering the mast, so that a worker on the scaffold can perform work such as maintenance. Unlike a scaffold that basically needs to be arranged along the entire outer wall of a building, a lifting scaffold is used only by setting up a mast as much as necessary to support the lifting scaffold. Therefore, the labor and cost for using it are small. In addition, since the scaffolding is better than the gondola in which the scaffolding is suspended in the air, it is easier to ensure the safety of the worker who performs the maintenance of the building compared to the case where the gondola is used.
However, if the mast is higher than a certain level, it becomes difficult to maintain the stability of the mast simply by supporting the mast at its lower end. On the other hand, if the upper part of the mast (in the present application, the word “above the mast” means a part that is not the lower end of the mast. The same shall apply hereinafter) can be fixed to an appropriate part of the building to increase the stability of the mast. In general, however, there is no place on the side wall of a building where such fixation is possible. Moreover, even if such a place exists, since the place where the upper part of the mast can be fixed to the side wall of the building is limited, the problem that the place where the mast is raised is limited remains. It is also conceivable to provide a member for fixing the mast on the side wall of the building as a retrofit. The technique of connecting to the side wall of the building using the second metal fitting that fixes the other end to the scaffolding to the metal fitting of 1 is practically used.), The strength of the connection between the member and the building is not always sufficient And it is not always possible to attach such a member to the desired location on the side wall of the building, and above all, for example, the owner of the building may hurt the building. I hate it.

  The present invention has as its direct object to provide a technique for allowing a desired part of a side wall of a high-rise building to be fixed to the upper part of the mast, thereby a building using a lifting scaffold. Its indirect purpose is to enable maintenance of the mast without the conventional problems with respect to the stability of the mast and the position where the mast stands.

In order to solve the above-mentioned problems, the present inventor proposes the following invention.
The inventor proposes a high-rise building, and a connection fitting for connecting to at least one mast that is supposed to stand in parallel with the side wall of the building is provided on the side wall. The mast connected to the connecting bracket is mounted at a position where the connecting bracket can stably support the mast, and the mast connected to the connecting bracket is mounted as many as the connecting bracket can stably support. Each of the connection fittings has a base end embedded in the side wall from the completion of the building.
As described above, this building is provided with a connection fitting on its side wall that can be connected to the upper side of the mast from the beginning. Therefore, according to this building, it becomes possible to fix the desired portion of the side wall of the high-rise building and the upper portion of the mast by using the connection fitting. This also allows maintenance of the building using the lifting scaffold while maintaining the stability of the mast. In addition, although the location where the upper part of the mast can be fixed is limited to the position where the connection bracket is located, by providing the connection bracket from the beginning at an appropriate position, there is virtually no restriction on the position where the mast stands. it can.
Each base end of the connection fitting is embedded in the side wall of the building from the completion of the building. That is, the connection fitting of the present invention is not retrofitted to a building. Therefore, it is possible to sufficiently strengthen the connection between the connecting bracket to which the load from the mast of the lifting scaffold is applied and the side wall of the building, and by appropriately designing the connecting bracket to a desired position on the side wall of the building. It can be installed and does not damage the finished building.
It is assumed that the mast is set up in parallel with the side wall of the building, but the term "parallel" here includes the case where the mast and the side wall of the building are "parallel". Does not need to be "parallel". If the mast stands upright, for example, perpendicular to the ground, but it is assumed that the upright mast will be "along", but not perfect, on the side wall, then "mast will run parallel to the side wall of the building. It is assumed that “ For example, even if the side of the building is somewhat wavy in its normal direction and the mast is perpendicular to the ground, The requirement that “Yes” is satisfied.

Moreover, the specific structure is not ask | required if a connection metal fitting can be fixed with a mast. However, the base end is assumed to be embedded in the side wall in order to strengthen the connection between the connection fitting and the side wall of the building. An anchor that prevents the connection fitting from coming off from the side wall may be provided at the base end of the connection fitting. The shape of the anchor is not particularly limited as long as the anchor can be prevented from coming off from the side wall of the connection fitting.
At least one base end of the connection fitting may be embedded in a building pillar or beam. By doing so, it becomes possible to further strengthen the fixing between the connection fitting and the side wall. All the base ends of the connection fittings may be embedded in a building column or beam. In addition, as will be described later, the building may be a building. In recent buildings, the side wall may be a panel manufactured in advance in a factory or the like. When the side wall of the building is constructed of a panel, at least a part of the base end of the connection fitting may be embedded in the panel. Further, when the building is a building and the side wall is constructed of a panel, the base ends of all the connection fittings are the panels constituting the outer surface of the side wall of the building, the pillars of the building, It may be embedded in any of the beams. If the anchor is provided at the base end of the connection fitting, the connection between the side wall and the connection fitting becomes more and more firm.
The connection fitting can be embedded in the side wall of the building at the time of manufacturing the side wall. For example, if the side wall is made of concrete, the base end of the connection fitting is embedded in the concrete to be placed when the concrete is placed, and when the concrete is cured after curing, the connection fitting is already inside the side wall. Can be embedded. Further, when the building is a building and the side wall is made of a panel, the connection fitting can be embedded in the panel at the base end when the panel is manufactured. As panels for constituting the outer wall of a building, for example, concrete panels such as ALC (Autoclaved Lightweight Concrete) panels and PC (Prestressed Concrete / high-strength concrete) panels are known. If it is an ALC panel, its thickness is generally about several hundreds of millimeters. So, when placing concrete, the base end of the connection fitting should be embedded inside to make the fixing sufficiently strong. Is possible. If the anchor is provided at the base end of the connection fitting, the connection between the panel and the connection fitting, and hence the connection between the side wall of the building and the connection fitting becomes stronger.

The connection metal fitting and the mast may be fixed directly by fixing the connection metal fitting and the mast, or by fixing the connection metal fitting indirectly to the mast through other means such as other metal fittings. Also, the fixing of the mast and the connecting bracket should be basically detachable.
The connection fitting may be a nut. The connection fitting that is a nut may be embedded in the side wall at least on the base end side so that one opening of the threaded inner peripheral surface is exposed from the side wall. The other opening of the nut may not exist (that is, it may be covered). Just by embedding the above-mentioned number of nuts in the above-mentioned position on the side wall of the building, the mast can be stood in a stable state without any restriction on the position where the mast is to be stood.

The surface of the connection fitting may be covered with a cover that is removable when connected to the mast and prevents the connection fitting from being exposed.
If the connection fitting is provided on the side wall of the building, the beauty of the building may be impaired. In addition, there is no possibility that any object that has soared for some reason will be caught by a connection fitting located at a high position, for example. If there is a cover as described above, such a situation can be prevented. For example, by making the appearance of the cover familiar with the outer wall of the building, the possibility of impairing the appearance of the building can be reduced. The cover may be provided with only one of the function of maintaining the aesthetics of the building and the function of reducing the possibility of any object being caught by the connection fitting.
The cover may be detachable from the side wall. With such a cover, it is possible to repeatedly use the cover by removing the cover when connecting the mast and the connection fitting, and reattaching the cover when releasing the connection between the mast and the connection fitting.
In addition, the cover may be configured such that the connection fitting that is inside the cover is exposed when the cover is destroyed (including a case where the cover is irreversibly removed). For example, a clay-like material including clay, a mortar-like material including mortar, a resin such as urethane foam, urethane, and polystyrene foam can be used as the cover. When one of these is used as a cover, it is possible to reduce the influence of the rain water on the connection fitting by preventing the rain water from being impregnated.

As described above, the connection bracket is connected to the mast connected to the connection bracket in a position where the connection bracket can stably support the mast connected to the connection bracket on the side wall of the high-rise building. As many as can be supported. As long as the object is achieved, the number of connection fittings may be one or plural.
For example, at least two of the connection fittings may be provided on at least one normal line of the outer surface of the side wall. If the connection fitting is arranged in such a manner, when one mast is fixed to the side wall, two places above the mast can be fixed to the connection fitting other than the lower end of the mast. So it is useful for increasing the stability of the mast.

  The building according to the present invention may be a building that is an office-use or residential apartment. Of course, the building may be a so-called structure such as a chimney or a bridge that is not supposed to be used as a primary use by a person.

The connection fitting is provided on the side wall of the building. Since the connection fitting needs to be able to be fixed to the mast, at least a part of the connection fitting is exposed to the outside in the absence of the cover described above or described later.
At least one of the connection fittings is attached to the inside of a recess provided on the outer surface of the side wall, and the connection fitting is not exposed from the outer surface which is substantially flush with the side wall. Also good. It has already been mentioned that a cover can be used as a means for exhibiting the function of maintaining the aesthetics of a building or the function of reducing the possibility that any object will be caught by the connection fitting. A similar function may be obtained by providing the connection fitting in the recess. Of course, it is also acceptable for all the fittings to be in the recesses.
As described above, the building of the present application may be a building, and the side wall of the building may be constituted by panels. In that case, the recess in which the connection fitting is provided may be provided in the panel. If the panel is a concrete raw panel such as an ALC panel or a PC panel, the thickness is several hundred mm as described above. Therefore, a recess is formed and the base end of the connection fitting is embedded in the bottom of the recess. Even so, there is no problem in sufficiently strengthening the coupling between the panel and the connection fitting. The inventor of the present invention is also a panel constituting the outer surface of the side wall of the building, and the base end of the connection fitting is embedded in the outer surface, and the panel is placed at a predetermined position of the high-rise building as the building. A connection fitting for connecting to at least one mast that is supposed to be stood in parallel with the side wall of the building by attaching the mast connected to the connection fitting on the side wall. In a position where the metal fitting can be stably supported, the number of the masts connected to the connection metal fitting can be stably supported by the connection metal fitting so that the attached building can be built. A panel is also proposed as an embodiment of the present invention. This panel can also be provided with a recess, and it is natural that the connection fitting may be provided in the recess. Moreover, the cover similar to what was already demonstrated or mentioned later may be provided also in this panel irrespective of the presence or absence of a recessed part.
In any case, the concave portion may be provided with a cover that hides the exposure of the connection fitting. That is, a cover can be provided in the recess of the panel. The structure and function of the cover are as described above.
The cover may be a plate that covers the opening of the recess. The plate may be detachable with respect to the opening of the recess. Thereby, the cover can be used repeatedly. In order to make the appearance of the cover familiar with the outer wall of the building, it is also possible to arrange the material (for example, tiles) arranged on the surface of the side wall of the building on the outside of the cover, which is a board It is.
The cover may be a filler that fills the recess. The cover in this case may be configured such that the connection fitting that is inside the cover is exposed when the cover is broken. For example, a clay-like thing including clay, a mortar-like thing such as mortar, a resin such as urethane foam, urethane, and polystyrene foam can be filled in the recess as a cover that is a filler.

The present inventor also provides a maintenance method for a high-rise building.
In the method, a connection fitting for connecting to at least one mast that is supposed to stand in parallel with a side wall of the building is connected to the mast of the side wall connected to the connection fitting. Completion of the building in a position where the bracket can stably support the mast connected to the connection bracket so that the connection bracket can stably support the mast, and each base end of the connection bracket is on the side wall At least one mast with its lower end fixed at least connected to at least one of the connection fittings of a high-rise building that has been embedded from time to side wall of the building In addition, a scaffold capable of raising and lowering the mast is attached, the scaffold is raised and lowered along the mast, and an operator on the scaffold is placed on the building. To perform the maintenance work of things, it is a maintenance method.
According to this method, the maintenance of the building using the lifting scaffold can be performed while maintaining the stability of the mast, and the restriction on the position where the mast stands can be virtually eliminated.

The side view which shows roughly the whole structure of the building in 1st Embodiment of this invention. The front view which shows the example of the arrangement | positioning aspect of the connection metal fitting provided in the side wall of the building shown in FIG. The side view which shows the state in which the maintenance of the building shown in FIG. 1 is performed schematically. The perspective view which shows the connection state of the connection metal fitting shown in FIG. 3, and a connection metal fitting. The sectional side view which shows the connection metal fitting of the modification 1. FIG. The sectional side view which shows the connection metal fitting of the modification 2. FIG. FIG. 14 is a side cross-sectional view showing another example of the connection fitting of Modification 2. The (A) front view which shows the structure of the panel of the modification 3, (B) XX sectional drawing of the opening cover vicinity. The top view which shows roughly the state by which the maintenance of the building in 2nd Embodiment of this invention is performed. FIG. 10 is a side cross-sectional view showing a connection fitting of Modification 4. FIG. 9 is a side cross-sectional view showing an example in which an opening lid is applied to the connection fitting of Modification 4. Sectional drawing which shows the attachment state to the side wall of the connection metal fitting provided in the side wall of the building shown in FIG. FIG. 2 is a plan view schematically showing a state in which the building shown in FIG. 1 is being maintained.

  Hereinafter, preferred first and second embodiments of the present invention will be described in detail with reference to the drawings. In the description of each embodiment and the modification, the same reference numerals are given to the common objects, and the overlapping description will be omitted depending on the case.

<< First Embodiment >>
FIG. 1 shows a building 100 in the first embodiment.
The building 100 is a building. The building which is the building 100 is, for example, an office building or a condominium. The building 100 stands on the ground 500. The structure of the building 100 is very common except that it includes a connection fitting described later. Although FIG. 1 does not show entrances and exits, windows, and the like, naturally, the building 100 has a structure for satisfying the functions required for a normal building or a normal building.
The building 100 is a high-rise building. The building 100 has a height of 20 m or more, and is high enough to cause difficulty in maintenance. The height of the building 100 may be several hundred meters or more, for example.

The connection fitting 110 is made of metal and can be connected to the upper portion of the mast (a portion other than the lower end of the mast), which will be described later, as will be described later. In addition, the connection fitting 110 has a strength sufficient to stably support the mast when connected to the upper side of the mast. As will be described later, the mast forms a part of the lifting scaffold.
At least one connection fitting 110 is provided on the side wall 101 of the building 100. In the example of FIG. 1, a plurality of, more specifically, seven connection fittings 110 are provided on the side wall 101 of the building 100. In FIG. 1, the connecting metal fitting 110 is shown in a larger size for easy understanding.
The connection fitting 110 is provided at a predetermined position on the side wall 101 of the building 100. The position on the side wall 101 where the connection fitting 110 is provided is such a position that a mast that can be stood up can be fixed to the connection fitting 110.
In other words, the number of connecting fittings 110 is such that the connecting fitting 110 can stably support the mast connected to the connecting fitting 110, and the number capable of stably supporting the mast connected to the connecting fitting 110. Attached to the side wall 101.
When the building 100 is a substantially rectangular parallelepiped building, there are four side walls 101. In that case, the connection fitting 110 may exist only on one surface of the side wall 101, may exist on two or three surfaces of the side wall 101, or may exist on all the side walls 101.
Further, the connection fitting 110 may exist on the entire side wall 101 or may exist only on a part of the side wall 101.
Further, when the connection fitting 110 exists in a certain range of the side wall 101, the connection fitting 110 may be uniformly arranged on the entire surface of the range where the connection fitting 110 exists, or in a certain range, a certain range. Then, it may be distributed sparsely.

The connection fitting 110 is attached to the side wall 101 as shown in FIG. An anchor 110 </ b> A is provided at the proximal end of the connection fitting 110.
The anchor 110 </ b> A of the connection fitting 110 is positioned in a space in which the side wall 101 is positioned after the side wall 101 is manufactured, for example, before the concrete is placed in order to form the side wall 101. In this state, concrete is placed and the concrete is hardened, whereby the anchor 110 </ b> A of the connection fitting 110 is embedded in the side wall 101. The anchor 110A has, for example, a shape in which an umbrella is opened. This shape prevents the anchor 110A from falling off the side wall 101. Due to the presence of the anchor 110 </ b> A, the connection fitting 110 is firmly fixed to the side wall 101. The shape of the anchor 110 </ b> A is not necessarily an umbrella shape as illustrated, and may be any shape that can prevent the anchor 110 </ b> A from falling off the side wall 101. A well-known thing can be employ | adopted for the shape of the anchor 110A. The anchor 110 </ b> A is embedded in the side wall 101 of the building 100 or a pillar or beam (not shown).
When the building 100 is a building, the side wall 101 may be constituted by a set of panels. The panel is, for example, an ALC panel or a PC panel. The panel is, for example, a rectangular plate, and generally the lengths and widths of adjacent ones are aligned. The panels are arranged vertically and horizontally and constitute the side wall 101. The anchor 110A of the connection fitting 110 can be embedded in the panel when the panel is manufactured. When the panel is made of concrete, the anchor 110A can be embedded at the time of manufacturing the panel by the same method as described above for embedding the anchor 110A in the side wall 101 when the side wall 101 is manufactured. The thickness of the panel is set such that the strength of the panel and the strength of the coupling between the panel and the anchor 110A are still sufficient even when such anchor 110A is embedded, for example, about 300 mm. When the side wall 101 of the building 100 is constituted by a set of panels, it is not necessary that the connection fittings 110 be attached to all the panels, and two or more connection fittings 110 are attached to one panel. There may be cases. The panel is generally manufactured at a factory, not at the construction site of the building 100, but when the panel is manufactured at the factory, when the side wall 101 of the building 100 is constructed by arranging a large number of panels. What is necessary is just to design so that the connection metal fitting 110 is located in a finally required part.

A front view of one side wall 101 is shown in FIG. FIG. 2 collectively shows several patterns in which the connection fitting 110 is attached to the side wall 101.
There are four patterns A to D for attaching the connection fitting 110 to the side wall 101 shown in this example. Each of the connection fittings 110 arranged on the normal line of the side wall 101 shown in each pattern is used to support one mast. Each of the patterns A to D includes a plurality of connection fittings 110 arranged along the normal line of the side wall 101 or arranged in the vertical direction. The mast is supported in a state of being parallel to the side wall 101 of the building 100 in a vertical state or a state close thereto by a series of connection fittings 110 included in each pattern.
First, the pattern A will be described. In the pattern A, the connection fittings 110 are arranged in a line over substantially the entire height of the side wall 101 so as to be equally spaced in the vertical direction. Each connection fitting 110 can be used to connect a mast, but not all the connection fittings 110 are connected to the mast when the mast is connected. This also applies to the following B to D.
Next, the pattern B will be described. In the pattern B, the connection fittings 110 are arranged in a line over substantially the entire height of the side wall 101 such that the intervals in the vertical direction are irregular.
Next, the pattern C will be described. In the pattern C, the connection fittings 110 are arranged in a line in a part of the side wall 101 in the height direction so that the intervals in the vertical direction are equal. Thus, the connection fitting 110 does not need to exist uniformly in the normal direction of the side wall 101.
Next, the pattern D will be described. In the pattern D, the connection fittings 110 are arranged in two rows over substantially the entire height of the side wall 101 so as to be equally spaced in the vertical direction. In this example, the strength of fixing the mast can be increased by supporting the same height of the mast using the two connecting fittings 110 arranged side by side.
In addition, there is a portion where the connection fitting 110 does not exist between the pattern C and the pattern D. Thus, the connection fitting 110 does not need to exist uniformly also in the horizontal direction.

FIG. 3 shows a state where the mast is fixed by the connecting metal fitting 110 and the mast is set in a state of being parallel to the side wall 101 of the building 100 in the vertical state or close to it.
As shown in the side view of FIG. 3, the mast 200 can be connected to the connection fitting 110 via the connection fitting 300.
Details of the structure of the connection fitting 110 and the connection fitting 300 and the connection method will be described with reference to the perspective view of FIG. Note that the connecting metal fitting 300 is made of metal in this embodiment. Moreover, the connection metal fitting 110 and the connection metal fitting 300 are sufficient if they can be detachably connected to each other. That is, the configurations of the connection fitting 110 and the connection fitting 300 described below are merely examples of possible configurations.

The connection fitting 110 includes a connection main body 111 extending vertically from the side wall 101 and a connection locking portion 112 formed by bending the connection main body 111 upward, although not limited thereto. The base end (left back in FIG. 4) side of the connection main body 111 is fixed to the side wall 101 by an appropriate method. For example, the base end of the connection main body 111 is provided with a plate-like base, and a bolt penetrating a hole drilled in the base is screwed into the side wall 101 or the base end of the connection main body 111. Is provided with an anchor that is embedded in the side wall and does not come out, and by fixing the anchor in the side wall 101, the base end side of the connection main body 111 is fixed to the side wall 101.
On the other hand, the connection fitting 300 includes a rod-like connection main body 301. Although the illustration and detailed description of the connection main body 301 are omitted, the base end (right front side in FIG. 4) side can be fixed to the mast 200 by an appropriate structure. A grip portion 302 is provided on the distal end side of the connection main body portion 301. The grip portion 302 fixes the connection main body portion 301 and the connection fitting 110. The grip portion 302 has a U-shape with an open bottom. Further, screw holes (not shown) are formed at both ends of the grip portion 302. A lid 303, which is a plate-like member, is attached to the lower end of the grip portion 302. The lid 303 closes the lower opening of the grip portion 302. Both end portions of the grip portion 302 are provided with holes (not shown), and screw holes (not shown) are also provided at positions corresponding to the holes on both sides of the lid 303. The lid 303 is firmly fixed to the gripping portion 302 by screwing the tip ends of the bolts 304 penetrating the holes provided at the tip portions of the two gripping portions 302 into the screw holes on both sides of the lid 303. At that time, a rectangular hole is formed with the lid 303 surrounded by the lower side and the inner side surface of the gripper 302 surrounded by the upper side and the left and right sides. The cross-sectional shape and size of the rectangular hole correspond to the cross-sectional shape of the connection main body 111 of the connection fitting 110. That is, when the lid 303 is fixed to the gripping portion 302 with the two gripping portions 302 straddling the connection main body portion 111 of the connection fitting 110, the thickness of the tip of the connection main body portion 111 includes the connection locking portion 112. Therefore, the connection main body 111 cannot be removed from the rectangular hole surrounded by the grip portion 302 and the lid 303.
In other words, the above-described rectangular hole (around) engages with the connection locking portion 112, so that the connection fitting 110 and the connection fitting 300 can be firmly fixed.

Next, a maintenance method for the building 100 including the connection fitting 110 will be described.
A lifting scaffold is used for maintenance. Lifting scaffolds are well known and need not be described in detail by those skilled in the art, so detailed description thereof will be omitted. However, the lifting scaffolds include a mast and a scaffold that can freely move up and down along the mast. Yes. The scaffold includes a drive. The drive device generates power for moving up and down with respect to the mast and can be fixed at an arbitrary height with respect to the mast.

In order to perform maintenance, the mast 200 (see FIGS. 3 and 3) is placed at an appropriate position for positioning the scaffold so that the scaffold can be positioned at a portion where the scaffold is necessary for performing maintenance work. (See FIG. 13).
In this embodiment, the mast 200 is set up in the vicinity of both ends in the width direction of the side walls 101 of the building 100. The mast 200 erected near both ends in the width direction of a certain side wall 101 supports the vicinity of both ends of the scaffold 210 that substantially corresponds to the lateral width of the side wall 101. A scaffold 210 facing a certain side wall 101 is used to maintain the side wall 101 facing that scaffold 210. The method of arranging the connection fittings 110 provided on the side wall 101 has been exemplarily described with reference to FIG. 2. However, if the mast 200 is erected at the position of FIG. 13, the connection fitting 110 is arranged in the width direction of the side wall 101. A plurality of connection fittings 110 may be provided in the vicinity of both ends, in other words, in the vertical direction of the portion of the side wall 101 facing the mast 200.
In FIG. 13, two masts 200 are erected on all of the four side walls 101, and a scaffold 210 is attached thereto, but maintenance of the building 100 is not necessarily performed on all the side walls 101. It is not necessary to do it at the same time. That is, it is also possible to stand the two masts 200 and attach the scaffolding 210 only to the side wall 101 that is the object of maintenance at that time. For example, referring to FIG. 13, maintenance of the left side wall 101 where the scaffold 210 drawn with a solid line faces it is performed at this stage so that the scaffold 210 shown with a two-dot chain line faces it. It is possible to follow the maintenance of the other three side walls 101.

The mast 200 is usually a set of mast bodies divided at appropriate positions in the length direction, and can be extended upward to a required height by connecting them.
First, the lower end of the mast body is fixed to the ground 500 (see FIG. 3) by a known method. Next, the scaffold 210 is attached to the mast 200 (mast body fixed to the ground 500) (see FIG. 3 and FIG. 13). As shown in FIG. 3, the scaffold 210 includes the driving device 220 described above. The scaffold 210 is originally provided with facilities such as a fence surrounding the periphery of the scaffold 210 to ensure the safety of workers on the scaffold 210, but the illustration and description thereof are omitted.
Next, the mast body to be mounted on the scaffold 210 is placed on the scaffold 210, the scaffold 210 is raised to near the upper part of the mast body fixed to the ground, and the mast body placed on the scaffold 210 is moved to the lower mast body. Connect upward. While repeating this, the mast 200 extends upward.
In addition, when there is the connection fitting 110 and the connection of the mast 200 and the connection fitting 110 is necessary to increase the stability of the mast 200, the connection fitting 110 and the mast 200 are connected. The method for connecting the mast 200 and the connection fitting 110 is as described above, and this is done by fixing the mast 200 and the connection fitting 300 and connecting the connection fitting 300 and the connection fitting 110. It should be noted that either the connection between the mast 200 and the connection fitting 300 or the connection between the connection fitting 300 and the connection fitting 110 may be performed first.
By repeating the above operation, the mast 200 is erected substantially vertically in a state parallel to the side wall 101 as shown in FIG.
Next, an operator rides on the scaffold 210 attached to the mast 200, raises and lowers the scaffold, and stops the scaffold at an appropriate height. The worker can perform maintenance of the building 100 safely.

  When the maintenance is completed, the mast 200 is disassembled into a mast body by performing the reverse operation of the above-described procedure, and the mast body and the scaffold 210 are carried out.

<Modification 1>
Next, a modification of the first embodiment will be described.
The connection fitting 110 in the first embodiment is exposed to the outside while being fixed to the side wall 101. In many cases, it is preferable that the connection fitting 110 is not exposed in view of the beauty of the building 100, and a problem that any object is locked to the connection fitting 110 is also reduced.
The building 100 of the modification 1 is substantially the same as the building 100 of the first embodiment, and includes the connection fitting 110 as in the case of the first embodiment, but the connection fitting 110 of the modification 1 has a side wall. It is being fixed inside the recessed part 102 provided in 101 (refer FIG. 5). As a result, the connection fitting 110 is not exposed from the outer surface of the side wall 101 which is substantially flush with the side wall 101 extending around the recess 102.
Although it is not this limitation, the recessed part 102 in the building 100 of the modification 1 is provided with the plate-shaped opening cover 103 which can be attached to the opening so that attachment or detachment is possible. As a method for detachably attaching the opening lid 103 to the opening, a known method can be applied. When the opening lid 103 is present, the connection fitting 110 is not completely exposed to the outside. Although not limited to this, the outer surface of the opening lid 103 is finished in the same manner as the outer surface of the side wall 101. For example, if a tile is attached to the outer surface of the side wall 101, the same tile is attached to the outer surface of the opening lid 103. By doing so, since the opening lid 103 becomes familiar with the side wall 101, the influence of the presence of the opening lid 103 on the appearance of the building 100 can be reduced.
The above-described structure in which the connection fitting 110 is provided inside the recess 102 and the opening lid 103 is provided in the opening of the recess 102 may be adopted for at least one connection fitting 110. Adopted for brackets.

The maintenance method for the building 100 of the first modification is basically the same as that in the first embodiment. The difference is that when the mast 200 and the connection fitting 110 are connected via the connection fitting 300, the opening lid 103 must be removed from the opening of the recess 102 in order to expose the connection fitting 110 to the outside. .
Moreover, when the maintenance is completed and the lifting scaffold is withdrawn, the opening lid 103 may be reattached to the opening of the recess 102, which is a difference between the first modification and the first embodiment.

  In Modification 1, the connection fitting 110 is attached to the inside of the recess 102. However, the configuration in which the connection fitting 110 is attached to the inside of the recess 102 is not adopted, and the connection fitting 110 is attached to the outer surface of the side wall 101. It is also possible to prevent the connection fitting 110 from being exposed by attaching a box-shaped or dome-shaped cover having an opening to the side wall 101 so that the connection fitting 110 is positioned inside the cover.

<Modification 2>
Next, Modification 2 will be described.
The building 100 of Modification 2 is generally the same as that of Modification 1.
As shown in FIG. 6, the connection fitting 110 is attached inside the recess 102.
However, in Modification 2, the opening lid 103 is not provided in the opening of the recess 102.
The connection fitting 110 attached to the inside of the recess 102 is completely prevented from being exposed to the outside by a method different from the method using the opening lid 103 in the first modification.
In the second modification, the connection fitting 110 is completely prevented from being exposed to the outside by filling the concave portion 102 with the filler 104. The filler 104 is a clay-like material such as clay, a mortar-like material such as mortar, or a resin such as urethane foam, urethane, or polystyrene foam.

The maintenance method of the building 100 of the second modification is basically the same as that of the first modification. The difference is that, in connecting the mast 200 and the connection fitting 110 via the connection fitting 300, in order to expose the connection fitting 110 to the outside, instead of removing the opening lid 103 from the opening of the recess 102, The point is that the filler 104 must be removed or destroyed. That is, the filler 104 is configured to expose the connecting metal fitting 110 in the interior due to the destruction.
In addition, when the lifting scaffold is withdrawn after the maintenance is completed, instead of reattaching the opening lid 103 to the opening of the recess 102, the recess 104 may be filled with the filler 104 again. It can be said that this is a difference between the first modification and the first modification. In the case of the second modification, by matching the color and texture of the filler 104 with that of the outer wall of the side wall 101, the appearance of the filler 104 can be adapted to the appearance of the building 100.

In the second modification, the connection fitting 110 is attached to the inside of the recess 102. However, the configuration in which the connection fitting 110 is attached to the inside of the recess 102 is not adopted, and the connection fitting 110 attached to the outer surface of the side wall 101 is not changed. It is also possible to cover with the same material as the filler 104 described above.
Further, it is also possible to further attach an opening lid 103 similar to that of the first modification to the opening of the recess 102 of the second modification (FIG. 7).

<Modification 3>
Next, Modification 3 will be described.
The building 100 of Modification 3 is generally the same as that of Modifications 1 and 2.
The side wall 100 of the building 100 of Modification 3 is configured by arranging panels 101P as shown in FIG. 8 vertically and horizontally. The panel 101P shown in FIG. 8 is provided with a recess 102 similar to that described in the first modification. A connection fitting 110 is attached inside the recess 102, and an opening lid 103 is attached to the opening of the recess 102.
Using such a panel 101P, the building 100 of the modification 3 includes the position of the recess 102 and the connecting bracket 110, except that the side wall 101 is divided into the panel 101P. It shall have the same configuration as Of the panel 101P, there may be a panel 101P in which the recess 102 does not exist (and accordingly, the connection fitting 110 and the opening lid 103 do not exist). Further, the panel 101P may have a plurality of recesses 102 (in addition to the connection fitting 110 and the opening lid 103). In addition, the position of the recess 102 (and the connection fitting 110 and the opening lid 103) on the front surface of the panel 101P may be different for each panel 101P.
Note that the other devices described in the first and second modifications can be applied to the panel 101P of the third modification.

<Modification 4>
Next, Modification 4 will be described.
The building 100 of the modification 4 is substantially the same as the building 100 of the first embodiment. The structure 100 of the modification 4 differs from the structure 100 of the first embodiment in the configuration of the connection fitting 110.
The connection fitting 110 is a nut. The connection fitting 110, which is a nut, includes a screw hole 117 that is threaded on its inner peripheral surface. The opening on the front end side of the screw hole 117 surrounded by the flange is exposed to the outside from the side wall 101 of the building 100. For example, when the side wall 101 is concrete, the connection fitting 110 which is a nut is embedded in the side wall 101 by placing concrete in a state where the position is fixed at the position shown in FIG. An anchor 110 </ b> A formed as a wide flange is provided at the proximal end of the connection fitting 110. The presence of the anchor 110A makes it difficult for the connecting fitting 110A to fall off the side wall 101.
Although not shown in the drawings, the connection fitting 300 that is connected to the connection fitting 110 in Modification 4 includes a bolt that is screwed into the screw hole 117 on the tip side. The coupling fitting 300 is fixed to the connection fitting 110 by screwing the bolt into the screw hole 117.
In addition, it can be said that the connection fitting 110 of the modified example 4 is fitted in a recess provided in the side wall 101 in a sense. The connection fitting 110 thus configured may be hidden by the opening lid 103 as in the case of the first and third modifications. The opening lid 103 may be detachable from the side wall 101 in the same manner as in the first and third modifications (FIG. 11).

<< Second Embodiment >>
The building 100 of the second embodiment is a kind of so-called structure, and more specifically a chimney. Some of the chimneys of incinerators are high-rise with a height of over 20m.
On the side wall 101 which is the curved surface of the building 100 of the second embodiment, a large number of connection fittings 110 are provided as in the case of the first embodiment.
As in the case of the first embodiment, the maintenance method for the building 110 according to the second embodiment is also performed by a worker on the scaffolding 210 attached to the mast 200.
The scaffold 210 of the second embodiment is made up of a plurality of scaffold plates 211. The overlapping width of the scaffold plate 211 with the adjacent scaffold plate 211 can be adjusted, and the angle with the adjacent scaffold plate 211 is variable. Thereby, the scaffold 210 can be bent according to the curvature of the side wall 101 of the building 100 which is a chimney. In addition, the raising / lowering scaffold which has the scaffold 210 which has the several scaffold board | plate 211 which can perform such expansion-contraction and bending is already practically used.
In the case shown in FIG. 9, the scaffold 210 substantially corresponds to the half circumference of the side wall 101. By using this, maintenance of the entire side wall 101 of the building 100 can be performed.

DESCRIPTION OF SYMBOLS 100 Building 101 Side wall 101P Panel 102 Recessed part 103 Opening lid 104 Filler 110 Connection metal fitting 111 Connection main body part 112 Connection latching part 200 Mast 210 Scaffolding 220 Driving device 300 Connection metal fitting 301 Connection main body part 302 Grip part 303 Lid

  The present invention relates to a method for maintaining a high-rise building. The term “building” in “high-rise building” in the present application is not limited to a building or the like that is supposed to be used by a person inside, but a person inside the building. It also includes chimneys, bridges, etc. that are not supposed to be used for their intended use. In addition, the term “high-rise” in “high-rise building” in the present application means a height at which technical difficulty occurs in the maintenance of the outer wall, that is, a height of at least 20 m.

Although not limited to high-rise buildings, maintenance of outer walls of buildings including inspection, cleaning, repainting, and the like tends to be difficult particularly in high-rise buildings.
If the building is not so high-rise, a scaffolding such as a bite scaffold may be fixed along the outer wall of the building, depending on the case, and a worker on the scaffold may perform maintenance on the building. Do. However, this method is difficult to put into practical use because the construction effort of the scaffold becomes excessive when the building is high-rise, or the construction itself of such a high-rise scaffold becomes impossible.
Under such circumstances, maintenance of high-rise buildings is generally performed by workers on a gondola suspended from the top of the building. For example, in the case of a building, a worker on a gondola suspended by a winch provided on the roof performs maintenance of the building.

  As mentioned above, it is common for workers on a gondola to perform maintenance on the building, but there are restrictions on where the gondola can be hung, and when riding on a gondola that tends to deteriorate the scaffolding due to shaking. The task is left in the point that danger is likely to occur in the work performed by the worker.

On the other hand, recently, lifting scaffolds have been applied to the maintenance of buildings. The lifting / lowering scaffold is provided with a high mast and a scaffold capable of lifting / lowering the mast, so that a worker on the scaffold can perform work such as maintenance. Unlike a scaffold that basically needs to be arranged along the entire outer wall of a building, a lifting scaffold is used only by setting up a mast as much as necessary to support the lifting scaffold. Therefore, the labor and cost for using it are small. In addition, since the scaffolding is better than the gondola in which the scaffolding is suspended in the air, it is easier to ensure the safety of the worker who performs the maintenance of the building compared to the case where the gondola is used.
However, if the mast is higher than a certain level, it becomes difficult to maintain the stability of the mast simply by supporting the mast at its lower end. On the other hand, if the upper part of the mast (in the present application, the word “above the mast” means a part that is not the lower end of the mast. The same shall apply hereinafter) can be fixed to an appropriate part of the building to increase the stability of the mast. In general, however, there is no place on the side wall of a building where such fixation is possible. Moreover, even if such a place exists, since the place where the upper part of the mast can be fixed to the side wall of the building is limited, the problem that the place where the mast is raised is limited remains. It is also conceivable to provide a member for fixing the mast on the side wall of the building as a retrofit. The technique of connecting to the side wall of the building using the second metal fitting that fixes the other end to the scaffolding to the metal fitting of 1 is practically used.), The strength of the connection between the member and the building is not always sufficient And it is not always possible to attach such a member to the desired location on the side wall of the building, and above all, for example, the owner of the building may hurt the building. I hate it.

  The present invention has as its direct object to provide a technique for allowing a desired part of a side wall of a high-rise building to be fixed to the upper part of the mast, thereby a building using a lifting scaffold. Its indirect purpose is to enable maintenance of the mast without the conventional problems with respect to the stability of the mast and the position where the mast stands.

In order to solve the above-mentioned problems, the present inventor proposes the following invention.
The inventor proposes a high-rise building, and a connection fitting for connecting to at least one mast that is supposed to stand in parallel with the side wall of the building is provided on the side wall. The mast connected to the connecting bracket is mounted at a position where the connecting bracket can stably support the mast, and the mast connected to the connecting bracket is mounted as many as the connecting bracket can stably support. Each of the connection fittings has a base end embedded in the side wall from the completion of the building.
As described above, this building is provided with a connection fitting on its side wall that can be connected to the upper side of the mast from the beginning. Therefore, according to this building, it becomes possible to fix the desired portion of the side wall of the high-rise building and the upper portion of the mast by using the connection fitting. This also allows maintenance of the building using the lifting scaffold while maintaining the stability of the mast. In addition, although the location where the upper part of the mast can be fixed is limited to the position where the connection bracket is located, by providing the connection bracket from the beginning at an appropriate position, there is virtually no restriction on the position where the mast stands. it can.
Each base end of the connection fitting is embedded in the side wall of the building from the completion of the building. That is, the connection fitting of the present invention is not retrofitted to a building. Therefore, it is possible to sufficiently strengthen the connection between the connecting bracket to which the load from the mast of the lifting scaffold is applied and the side wall of the building, and by appropriately designing the connecting bracket to a desired position on the side wall of the building. It can be installed and does not damage the finished building.
It is assumed that the mast is set up in parallel with the side wall of the building, but the term "parallel" here includes the case where the mast and the side wall of the building are "parallel". Does not need to be "parallel". If the mast stands upright, for example, perpendicular to the ground, but it is assumed that the upright mast will be "along", but not perfect, on the side wall, then "mast will run parallel to the side wall of the building. It is assumed that “ For example, even if the side of the building is somewhat wavy in the vertical direction and the mast is perpendicular to the ground, The requirement “Yes” is satisfied.

Moreover, the specific structure is not ask | required if a connection metal fitting can be fixed with a mast. However, the base end is assumed to be embedded in the side wall in order to strengthen the connection between the connection fitting and the side wall of the building. An anchor that prevents the connection fitting from coming off from the side wall may be provided at the base end of the connection fitting. The shape of the anchor is not particularly limited as long as the anchor can be prevented from coming off from the side wall of the connection fitting.
At least one base end of the connection fitting may be embedded in a building pillar or beam. By doing so, it becomes possible to further strengthen the fixing between the connection fitting and the side wall. All the base ends of the connection fittings may be embedded in a building column or beam. In addition, as will be described later, the building may be a building. In recent buildings, the side wall may be a panel manufactured in advance in a factory or the like. When the side wall of the building is constructed of a panel, at least a part of the base end of the connection fitting may be embedded in the panel. Further, when the building is a building and the side wall is constructed of a panel, the base ends of all the connection fittings are the panels constituting the outer surface of the side wall of the building, the pillars of the building, It may be embedded in any of the beams. If the anchor is provided at the base end of the connection fitting, the connection between the side wall and the connection fitting becomes more and more firm.
The connection fitting can be embedded in the side wall of the building at the time of manufacturing the side wall. For example, if the side wall is made of concrete, the base end of the connection fitting is embedded in the concrete to be placed when the concrete is placed, and when the concrete is cured after curing, the connection fitting is already inside the side wall. Can be embedded. Further, when the building is a building and the side wall is made of a panel, the connection fitting can be embedded in the panel at the base end when the panel is manufactured. As panels for constituting the outer wall of a building, for example, concrete panels such as ALC (Autoclaved Lightweight Concrete) panels and PC (Prestressed Concrete / high-strength concrete) panels are known. If it is an ALC panel, its thickness is generally about several hundreds of millimeters. So, when placing concrete, the base end of the connection fitting should be embedded inside to make the fixing sufficiently strong. Is possible. If the anchor is provided at the base end of the connection fitting, the connection between the panel and the connection fitting, and hence the connection between the side wall of the building and the connection fitting becomes stronger.

The connection metal fitting and the mast may be fixed directly by fixing the connection metal fitting and the mast, or by fixing the connection metal fitting indirectly to the mast through other means such as other metal fittings. Also, the fixing of the mast and the connecting bracket should be basically detachable.
The connection fitting may be a nut. The connection fitting that is a nut may be embedded in the side wall at least on the base end side so that one opening of the threaded inner peripheral surface is exposed from the side wall. The other opening of the nut may not exist (that is, it may be covered). Just by embedding the above-mentioned number of nuts in the above-mentioned position on the side wall of the building, the mast can be stood in a stable state without any restriction on the position where the mast is to be stood.

The surface of the connection fitting may be covered with a cover that is removable when connected to the mast and prevents the connection fitting from being exposed.
If the connection fitting is provided on the side wall of the building, the beauty of the building may be impaired. In addition, there is no possibility that any object that has soared for some reason will be caught by a connection fitting located at a high position, for example. If there is a cover as described above, such a situation can be prevented. For example, by making the appearance of the cover familiar with the outer wall of the building, the possibility of impairing the appearance of the building can be reduced. The cover may be provided with only one of the function of maintaining the aesthetics of the building and the function of reducing the possibility of any object being caught by the connection fitting.
The cover may be detachable from the side wall. With such a cover, it is possible to repeatedly use the cover by removing the cover when connecting the mast and the connection fitting, and reattaching the cover when releasing the connection between the mast and the connection fitting.
In addition, the cover may be configured such that the connection fitting that is inside the cover is exposed when the cover is destroyed (including a case where the cover is irreversibly removed). For example, a clay-like material including clay, a mortar-like material including mortar, a resin such as urethane foam, urethane, and polystyrene foam can be used as the cover. When one of these is used as a cover, it is possible to reduce the influence of the rain water on the connection fitting by preventing the rain water from being impregnated.

As described above, the connection bracket is connected to the mast connected to the connection bracket in a position where the connection bracket can stably support the mast connected to the connection bracket on the side wall of the high-rise building. As many as can be supported. As long as the object is achieved, the number of connection fittings may be one or plural.
For example, the fitting may be provided at least two on at least one longitudinal line of the outer surface of the side wall. If the connection fitting is arranged in such a manner, when one mast is fixed to the side wall, two places above the mast can be fixed to the connection fitting other than the lower end of the mast. So it is useful for increasing the stability of the mast.

  The building according to the present invention may be a building that is an office-use or residential apartment. Of course, the building may be a so-called structure such as a chimney or a bridge that is not supposed to be used as a primary use by a person.

The connection fitting is provided on the side wall of the building. Since the connection fitting needs to be able to be fixed to the mast, at least a part of the connection fitting is exposed to the outside in the absence of the cover described above or described later.
At least one of the connection fittings is attached to the inside of a recess provided on the outer surface of the side wall, and the connection fitting is not exposed from the outer surface which is substantially flush with the side wall. Also good. It has already been mentioned that a cover can be used as a means for exhibiting the function of maintaining the aesthetics of a building or the function of reducing the possibility that any object will be caught by the connection fitting. A similar function may be obtained by providing the connection fitting in the recess. Of course, it is also acceptable for all the fittings to be in the recesses.
As described above, the building of the present application may be a building, and the side wall of the building may be constituted by panels. In that case, the recess in which the connection fitting is provided may be provided in the panel. If the panel is a concrete raw panel such as an ALC panel or a PC panel, the thickness is several hundred mm as described above. Therefore, a recess is formed and the base end of the connection fitting is embedded in the bottom of the recess. Even so, there is no problem in sufficiently strengthening the coupling between the panel and the connection fitting. The inventor of the present invention is also a panel constituting the outer surface of the side wall of the building, and the base end of the connection fitting is embedded in the outer surface, and the panel is placed at a predetermined position of the high-rise building as the building. A connection fitting for connecting to at least one mast that is supposed to be stood in parallel with the side wall of the building by attaching the mast connected to the connection fitting on the side wall. In a position where the metal fitting can be stably supported, the number of the masts connected to the connection metal fitting can be stably supported by the connection metal fitting so that the attached building can be built. A panel is also proposed as an embodiment of the present invention. This panel can also be provided with a recess, and it is natural that the connection fitting may be provided in the recess. Moreover, the cover similar to what was already demonstrated or mentioned later may be provided also in this panel irrespective of the presence or absence of a recessed part.
In any case, the concave portion may be provided with a cover that hides the exposure of the connection fitting. That is, a cover can be provided in the recess of the panel. The structure and function of the cover are as described above.
The cover may be a plate that covers the opening of the recess. The plate may be detachable with respect to the opening of the recess. Thereby, the cover can be used repeatedly. In order to make the appearance of the cover familiar with the outer wall of the building, it is also possible to arrange the material (for example, tiles) arranged on the surface of the side wall of the building on the outside of the cover, which is a board It is.
The cover may be a filler that fills the recess. The cover in this case may be configured such that the connection fitting that is inside the cover is exposed when the cover is broken. For example, a clay-like thing including clay, a mortar-like thing such as mortar, a resin such as urethane foam, urethane, and polystyrene foam can be filled in the recess as a cover that is a filler.

The present inventor also provides a maintenance method for a high-rise building.
In the method, a connection fitting for connecting to at least one mast that is supposed to stand in parallel with a side wall of the building is connected to the mast of the side wall connected to the connection fitting. Completion of the building in a position where the bracket can stably support the mast connected to the connection bracket so that the connection bracket can stably support the mast, and each base end of the connection bracket is on the side wall At least one mast with its lower end fixed at least connected to at least one of the connection fittings of a high-rise building that has been embedded from time to side wall of the building In addition, a scaffold capable of raising and lowering the mast is attached, the scaffold is raised and lowered along the mast, and an operator on the scaffold is placed on the building. To perform the maintenance work of things, it is a maintenance method.
According to this method, the maintenance of the building using the lifting scaffold can be performed while maintaining the stability of the mast, and the restriction on the position where the mast stands can be virtually eliminated.

The side view which shows roughly the whole structure of the building in 1st Embodiment of this invention. The front view which shows the example of the arrangement | positioning aspect of the connection metal fitting provided in the side wall of the building shown in FIG. The side view which shows the state in which the maintenance of the building shown in FIG. 1 is performed schematically. The perspective view which shows the connection state of the connection metal fitting shown in FIG. 3, and a connection metal fitting. The sectional side view which shows the connection metal fitting of the modification 1. FIG. The sectional side view which shows the connection metal fitting of the modification 2. FIG. FIG. 14 is a side cross-sectional view showing another example of the connection fitting of Modification 2. The (A) front view which shows the structure of the panel of the modification 3, (B) XX sectional drawing of the opening cover vicinity. The top view which shows roughly the state by which the maintenance of the building in 2nd Embodiment of this invention is performed. FIG. 10 is a side cross-sectional view showing a connection fitting of Modification 4. FIG. 9 is a side cross-sectional view showing an example in which an opening lid is applied to the connection fitting of Modification 4. Sectional drawing which shows the attachment state to the side wall of the connection metal fitting provided in the side wall of the building shown in FIG. FIG. 2 is a plan view schematically showing a state in which the building shown in FIG. 1 is being maintained.

  Hereinafter, preferred first and second embodiments of the present invention will be described in detail with reference to the drawings. In the description of each embodiment and the modification, the same reference numerals are given to the common objects, and the overlapping description will be omitted depending on the case.

<< First Embodiment >>
FIG. 1 shows a building 100 in the first embodiment.
The building 100 is a building. The building which is the building 100 is, for example, an office building or a condominium. The building 100 stands on the ground 500. The structure of the building 100 is very common except that it includes a connection fitting described later. Although FIG. 1 does not show entrances and exits, windows, and the like, naturally, the building 100 has a structure for satisfying the functions required for a normal building or a normal building.
The building 100 is a high-rise building. The building 100 has a height of 20 m or more, and is high enough to cause difficulty in maintenance. The height of the building 100 may be several hundred meters or more, for example.

The connection fitting 110 is made of metal and can be connected to the upper portion of the mast (a portion other than the lower end of the mast), which will be described later, as will be described later. In addition, the connection fitting 110 has a strength sufficient to stably support the mast when connected to the upper side of the mast. As will be described later, the mast forms a part of the lifting scaffold.
At least one connection fitting 110 is provided on the side wall 101 of the building 100. In the example of FIG. 1, a plurality of, more specifically, seven connection fittings 110 are provided on the side wall 101 of the building 100. In FIG. 1, the connecting metal fitting 110 is shown in a larger size for easy understanding.
The connection fitting 110 is provided at a predetermined position on the side wall 101 of the building 100. The position on the side wall 101 where the connection fitting 110 is provided is such a position that a mast that can be stood up can be fixed to the connection fitting 110.
In other words, the number of connecting fittings 110 is such that the connecting fitting 110 can stably support the mast connected to the connecting fitting 110, and the number capable of stably supporting the mast connected to the connecting fitting 110. Attached to the side wall 101.
When the building 100 is a substantially rectangular parallelepiped building, there are four side walls 101. In that case, the connection fitting 110 may exist only on one surface of the side wall 101, may exist on two or three surfaces of the side wall 101, or may exist on all the side walls 101.
Further, the connection fitting 110 may exist on the entire side wall 101 or may exist only on a part of the side wall 101.
Further, when the connection fitting 110 exists in a certain range of the side wall 101, the connection fitting 110 may be uniformly arranged on the entire surface of the range where the connection fitting 110 exists, or in a certain range, a certain range. Then, it may be distributed sparsely.

The connection fitting 110 is attached to the side wall 101 as shown in FIG. An anchor 110 </ b> A is provided at the proximal end of the connection fitting 110.
The anchor 110 </ b> A of the connection fitting 110 is positioned in a space in which the side wall 101 is positioned after the side wall 101 is manufactured, for example, before the concrete is placed in order to form the side wall 101. In this state, concrete is placed and the concrete is hardened, whereby the anchor 110 </ b> A of the connection fitting 110 is embedded in the side wall 101. The anchor 110A has, for example, a shape in which an umbrella is opened. This shape prevents the anchor 110A from falling off the side wall 101. Due to the presence of the anchor 110 </ b> A, the connection fitting 110 is firmly fixed to the side wall 101. The shape of the anchor 110 </ b> A is not necessarily an umbrella shape as illustrated, and may be any shape that can prevent the anchor 110 </ b> A from falling off the side wall 101. A well-known thing can be employ | adopted for the shape of the anchor 110A. The anchor 110 </ b> A is embedded in the side wall 101 of the building 100 or a pillar or beam (not shown).
When the building 100 is a building, the side wall 101 may be constituted by a set of panels. The panel is, for example, an ALC panel or a PC panel. The panel is, for example, a rectangular plate, and generally the lengths and widths of adjacent ones are aligned. The panels are arranged vertically and horizontally and constitute the side wall 101. The anchor 110A of the connection fitting 110 can be embedded in the panel when the panel is manufactured. When the panel is made of concrete, the anchor 110A can be embedded at the time of manufacturing the panel by the same method as described above for embedding the anchor 110A in the side wall 101 when the side wall 101 is manufactured. The thickness of the panel is set such that the strength of the panel and the strength of the coupling between the panel and the anchor 110A are still sufficient even when such anchor 110A is embedded, for example, about 300 mm. When the side wall 101 of the building 100 is constituted by a set of panels, it is not necessary that the connection fittings 110 be attached to all the panels, and two or more connection fittings 110 are attached to one panel. There may be cases. The panel is generally manufactured at a factory, not at the construction site of the building 100, but when the panel is manufactured at the factory, when the side wall 101 of the building 100 is constructed by arranging a large number of panels. What is necessary is just to design so that the connection metal fitting 110 is located in a finally required part.

A front view of one side wall 101 is shown in FIG. FIG. 2 collectively shows several patterns in which the connection fitting 110 is attached to the side wall 101.
There are four patterns A to D for attaching the connection fitting 110 to the side wall 101 shown in this example. Fitting 110 aligned on the longitudinal direction of the line of the side wall 101 shown in each pattern are each used to support the single mast. Each of the patterns A to D includes a plurality of connection fittings 110 arranged along a vertical line of the side wall 101 or arranged in the vertical direction. The mast is supported in a state of being parallel to the side wall 101 of the building 100 in a vertical state or a state close thereto by a series of connection fittings 110 included in each pattern.
First, the pattern A will be described. In the pattern A, the connection fittings 110 are arranged in a line over substantially the entire height of the side wall 101 so as to be equally spaced in the vertical direction. Each connection fitting 110 can be used to connect a mast, but not all the connection fittings 110 are connected to the mast when the mast is connected. This also applies to the following B to D.
Next, the pattern B will be described. In the pattern B, the connection fittings 110 are arranged in a line over substantially the entire height of the side wall 101 such that the intervals in the vertical direction are irregular.
Next, the pattern C will be described. In the pattern C, the connection fittings 110 are arranged in a line in a part of the side wall 101 in the height direction so that the intervals in the vertical direction are equal. As described above, the connection fitting 110 does not need to exist even in the longitudinal line direction of the side wall 101.
Next, the pattern D will be described. In the pattern D, the connection fittings 110 are arranged in two rows over substantially the entire height of the side wall 101 so as to be equally spaced in the vertical direction. In this example, the strength of fixing the mast can be increased by supporting the same height of the mast using the two connecting fittings 110 arranged side by side.
In addition, there is a portion where the connection fitting 110 does not exist between the pattern C and the pattern D. Thus, the connection fitting 110 does not need to exist uniformly also in the horizontal direction.

FIG. 3 shows a state where the mast is fixed by the connecting metal fitting 110 and the mast is set in a state of being parallel to the side wall 101 of the building 100 in the vertical state or close to it.
As shown in the side view of FIG. 3, the mast 200 can be connected to the connection fitting 110 via the connection fitting 300.
Details of the structure of the connection fitting 110 and the connection fitting 300 and the connection method will be described with reference to the perspective view of FIG. Note that the connecting metal fitting 300 is made of metal in this embodiment. Moreover, the connection metal fitting 110 and the connection metal fitting 300 are sufficient if they can be detachably connected to each other. That is, the configurations of the connection fitting 110 and the connection fitting 300 described below are merely examples of possible configurations.

The connection fitting 110 includes a connection main body 111 extending vertically from the side wall 101 and a connection locking portion 112 formed by bending the connection main body 111 upward, although not limited thereto. The base end (left back in FIG. 4) side of the connection main body 111 is fixed to the side wall 101 by an appropriate method. For example, the base end of the connection main body 111 is provided with a plate-like base, and a bolt penetrating a hole drilled in the base is screwed into the side wall 101 or the base end of the connection main body 111. Is provided with an anchor that is embedded in the side wall and does not come out, and by fixing the anchor in the side wall 101, the base end side of the connection main body 111 is fixed to the side wall 101.
On the other hand, the connection fitting 300 includes a rod-like connection main body 301. Although the illustration and detailed description of the connection main body 301 are omitted, the base end (right front side in FIG. 4) side can be fixed to the mast 200 by an appropriate structure. A grip portion 302 is provided on the distal end side of the connection main body portion 301. The grip portion 302 fixes the connection main body portion 301 and the connection fitting 110. The grip portion 302 has a U-shape with an open bottom. Further, screw holes (not shown) are formed at both ends of the grip portion 302. A lid 303, which is a plate-like member, is attached to the lower end of the grip portion 302. The lid 303 closes the lower opening of the grip portion 302. Both end portions of the grip portion 302 are provided with holes (not shown), and screw holes (not shown) are also provided at positions corresponding to the holes on both sides of the lid 303. The lid 303 is firmly fixed to the gripping portion 302 by screwing the tip ends of the bolts 304 penetrating the holes provided at the tip portions of the two gripping portions 302 into the screw holes on both sides of the lid 303. At that time, a rectangular hole is formed with the lid 303 surrounded by the lower side and the inner side surface of the gripper 302 surrounded by the upper side and the left and right sides. The cross-sectional shape and size of the rectangular hole correspond to the cross-sectional shape of the connection main body 111 of the connection fitting 110. That is, when the lid 303 is fixed to the gripping portion 302 with the two gripping portions 302 straddling the connection main body portion 111 of the connection fitting 110, the thickness of the tip of the connection main body portion 111 includes the connection locking portion 112. Therefore, the connection main body 111 cannot be removed from the rectangular hole surrounded by the grip portion 302 and the lid 303.
In other words, the above-described rectangular hole (around) engages with the connection locking portion 112, so that the connection fitting 110 and the connection fitting 300 can be firmly fixed.

Next, a maintenance method for the building 100 including the connection fitting 110 will be described.
A lifting scaffold is used for maintenance. Lifting scaffolds are well known and need not be described in detail by those skilled in the art, so detailed description thereof will be omitted. However, the lifting scaffolds include a mast and a scaffold that can freely move up and down along the mast. Yes. The scaffold includes a drive. The drive device generates power for moving up and down with respect to the mast and can be fixed at an arbitrary height with respect to the mast.

In order to perform maintenance, the mast 200 (see FIGS. 3 and 3) is placed at an appropriate position for positioning the scaffold so that the scaffold can be positioned at a portion where the scaffold is necessary for performing maintenance work. (See FIG. 13).
In this embodiment, the mast 200 is set up in the vicinity of both ends in the width direction of the side walls 101 of the building 100. The mast 200 erected near both ends in the width direction of a certain side wall 101 supports the vicinity of both ends of the scaffold 210 that substantially corresponds to the lateral width of the side wall 101. A scaffold 210 facing a certain side wall 101 is used to maintain the side wall 101 facing that scaffold 210. The method of arranging the connection fittings 110 provided on the side wall 101 has been exemplarily described with reference to FIG. 2. However, if the mast 200 is erected at the position of FIG. 13, the connection fitting 110 is arranged in the width direction of the side wall 101. A plurality of connection fittings 110 may be provided in the vicinity of both ends, in other words, in the vertical direction of the portion of the side wall 101 facing the mast 200.
In FIG. 13, two masts 200 are erected on all of the four side walls 101, and a scaffold 210 is attached thereto, but maintenance of the building 100 is not necessarily performed on all the side walls 101. It is not necessary to do it at the same time. That is, it is also possible to stand the two masts 200 and attach the scaffolding 210 only to the side wall 101 that is the object of maintenance at that time. For example, referring to FIG. 13, maintenance of the left side wall 101 where the scaffold 210 drawn with a solid line faces it is performed at this stage so that the scaffold 210 shown with a two-dot chain line faces it. It is possible to follow the maintenance of the other three side walls 101.

The mast 200 is usually a set of mast bodies divided at appropriate positions in the length direction, and can be extended upward to a required height by connecting them.
First, the lower end of the mast body is fixed to the ground 500 (see FIG. 3) by a known method. Next, the scaffold 210 is attached to the mast 200 (mast body fixed to the ground 500) (see FIG. 3 and FIG. 13). As shown in FIG. 3, the scaffold 210 includes the driving device 220 described above. The scaffold 210 is originally provided with facilities such as a fence surrounding the periphery of the scaffold 210 to ensure the safety of workers on the scaffold 210, but the illustration and description thereof are omitted.
Next, the mast body to be mounted on the scaffold 210 is placed on the scaffold 210, the scaffold 210 is raised to near the upper part of the mast body fixed to the ground, and the mast body placed on the scaffold 210 is moved to the lower mast body. Connect upward. While repeating this, the mast 200 extends upward.
In addition, when there is the connection fitting 110 and the connection of the mast 200 and the connection fitting 110 is necessary to increase the stability of the mast 200, the connection fitting 110 and the mast 200 are connected. The method for connecting the mast 200 and the connection fitting 110 is as described above, and this is done by fixing the mast 200 and the connection fitting 300 and connecting the connection fitting 300 and the connection fitting 110. It should be noted that either the connection between the mast 200 and the connection fitting 300 or the connection between the connection fitting 300 and the connection fitting 110 may be performed first.
By repeating the above operation, the mast 200 is erected substantially vertically in a state parallel to the side wall 101 as shown in FIG.
Next, an operator rides on the scaffold 210 attached to the mast 200, raises and lowers the scaffold, and stops the scaffold at an appropriate height. The worker can perform maintenance of the building 100 safely.

  When the maintenance is completed, the mast 200 is disassembled into a mast body by performing the reverse operation of the above-described procedure, and the mast body and the scaffold 210 are carried out.

<Modification 1>
Next, a modification of the first embodiment will be described.
The connection fitting 110 in the first embodiment is exposed to the outside while being fixed to the side wall 101. In many cases, it is preferable that the connection fitting 110 is not exposed in view of the beauty of the building 100, and a problem that any object is locked to the connection fitting 110 is also reduced.
The building 100 of the modification 1 is substantially the same as the building 100 of the first embodiment, and includes the connection fitting 110 as in the case of the first embodiment, but the connection fitting 110 of the modification 1 has a side wall. It is being fixed inside the recessed part 102 provided in 101 (refer FIG. 5). As a result, the connection fitting 110 is not exposed from the outer surface of the side wall 101 which is substantially flush with the side wall 101 extending around the recess 102.
Although it is not this limitation, the recessed part 102 in the building 100 of the modification 1 is provided with the plate-shaped opening cover 103 which can be attached to the opening so that attachment or detachment is possible. As a method for detachably attaching the opening lid 103 to the opening, a known method can be applied. When the opening lid 103 is present, the connection fitting 110 is not completely exposed to the outside. Although not limited to this, the outer surface of the opening lid 103 is finished in the same manner as the outer surface of the side wall 101. For example, if a tile is attached to the outer surface of the side wall 101, the same tile is attached to the outer surface of the opening lid 103. By doing so, since the opening lid 103 becomes familiar with the side wall 101, the influence of the presence of the opening lid 103 on the appearance of the building 100 can be reduced.
The above-described structure in which the connection fitting 110 is provided inside the recess 102 and the opening lid 103 is provided in the opening of the recess 102 may be adopted for at least one connection fitting 110. Adopted for brackets.

The maintenance method for the building 100 of the first modification is basically the same as that in the first embodiment. The difference is that when the mast 200 and the connection fitting 110 are connected via the connection fitting 300, the opening lid 103 must be removed from the opening of the recess 102 in order to expose the connection fitting 110 to the outside. .
Moreover, when the maintenance is completed and the lifting scaffold is withdrawn, the opening lid 103 may be reattached to the opening of the recess 102, which is a difference between the first modification and the first embodiment.

  In Modification 1, the connection fitting 110 is attached to the inside of the recess 102. However, the configuration in which the connection fitting 110 is attached to the inside of the recess 102 is not adopted, and the connection fitting 110 is attached to the outer surface of the side wall 101. It is also possible to prevent the connection fitting 110 from being exposed by attaching a box-shaped or dome-shaped cover having an opening to the side wall 101 so that the connection fitting 110 is positioned inside the cover.

<Modification 2>
Next, Modification 2 will be described.
The building 100 of Modification 2 is generally the same as that of Modification 1.
As shown in FIG. 6, the connection fitting 110 is attached inside the recess 102.
However, in Modification 2, the opening lid 103 is not provided in the opening of the recess 102.
The connection fitting 110 attached to the inside of the recess 102 is completely prevented from being exposed to the outside by a method different from the method using the opening lid 103 in the first modification.
In the second modification, the connection fitting 110 is completely prevented from being exposed to the outside by filling the concave portion 102 with the filler 104. The filler 104 is a clay-like material such as clay, a mortar-like material such as mortar, or a resin such as urethane foam, urethane, or polystyrene foam.

The maintenance method of the building 100 of the second modification is basically the same as that of the first modification. The difference is that, in connecting the mast 200 and the connection fitting 110 via the connection fitting 300, in order to expose the connection fitting 110 to the outside, instead of removing the opening lid 103 from the opening of the recess 102, The point is that the filler 104 must be removed or destroyed. That is, the filler 104 is configured to expose the connecting metal fitting 110 in the interior due to the destruction.
In addition, when the lifting scaffold is withdrawn after the maintenance is completed, instead of reattaching the opening lid 103 to the opening of the recess 102, the recess 104 may be filled with the filler 104 again. It can be said that this is a difference between the first modification and the first modification. In the case of the second modification, by matching the color and texture of the filler 104 with that of the outer wall of the side wall 101, the appearance of the filler 104 can be adapted to the appearance of the building 100.

In the second modification, the connection fitting 110 is attached to the inside of the recess 102. However, the configuration in which the connection fitting 110 is attached to the inside of the recess 102 is not adopted, and the connection fitting 110 attached to the outer surface of the side wall 101 is not changed. It is also possible to cover with the same material as the filler 104 described above.
Further, it is also possible to further attach an opening lid 103 similar to that of the first modification to the opening of the recess 102 of the second modification (FIG. 7).

<Modification 3>
Next, Modification 3 will be described.
The building 100 of Modification 3 is generally the same as that of Modifications 1 and 2.
The side wall 100 of the building 100 of Modification 3 is configured by arranging panels 101P as shown in FIG. 8 vertically and horizontally. The panel 101P shown in FIG. 8 is provided with a recess 102 similar to that described in the first modification. A connection fitting 110 is attached inside the recess 102, and an opening lid 103 is attached to the opening of the recess 102.
Using such a panel 101P, the building 100 of the modification 3 includes the position of the recess 102 and the connecting bracket 110, except that the side wall 101 is divided into the panel 101P. It shall have the same configuration as Of the panel 101P, there may be a panel 101P in which the recess 102 does not exist (and accordingly, the connection fitting 110 and the opening lid 103 do not exist). Further, the panel 101P may have a plurality of recesses 102 (in addition to the connection fitting 110 and the opening lid 103). In addition, the position of the recess 102 (and the connection fitting 110 and the opening lid 103) on the front surface of the panel 101P may be different for each panel 101P.
Note that the other devices described in the first and second modifications can be applied to the panel 101P of the third modification.

<Modification 4>
Next, Modification 4 will be described.
The building 100 of the modification 4 is substantially the same as the building 100 of the first embodiment. The structure 100 of the modification 4 differs from the structure 100 of the first embodiment in the configuration of the connection fitting 110.
The connection fitting 110 is a nut. The connection fitting 110, which is a nut, includes a screw hole 117 that is threaded on its inner peripheral surface. The opening on the front end side of the screw hole 117 surrounded by the flange is exposed to the outside from the side wall 101 of the building 100. For example, when the side wall 101 is concrete, the connection fitting 110 which is a nut is embedded in the side wall 101 by placing concrete in a state where the position is fixed at the position shown in FIG. An anchor 110 </ b> A formed as a wide flange is provided at the proximal end of the connection fitting 110. The presence of the anchor 110A makes it difficult for the connecting fitting 110A to fall off the side wall 101.
Although not shown in the drawings, the connection fitting 300 that is connected to the connection fitting 110 in Modification 4 includes a bolt that is screwed into the screw hole 117 on the tip side. The coupling fitting 300 is fixed to the connection fitting 110 by screwing the bolt into the screw hole 117.
In addition, it can be said that the connection fitting 110 of the modified example 4 is fitted in a recess provided in the side wall 101 in a sense. The connection fitting 110 thus configured may be hidden by the opening lid 103 as in the case of the first and third modifications. The opening lid 103 may be detachable from the side wall 101 in the same manner as in the first and third modifications (FIG. 11).

<< Second Embodiment >>
The building 100 of the second embodiment is a kind of so-called structure, and more specifically a chimney. Some of the chimneys of incinerators are high-rise with a height of over 20m.
On the side wall 101 which is the curved surface of the building 100 of the second embodiment, a large number of connection fittings 110 are provided as in the case of the first embodiment.
As in the case of the first embodiment, the maintenance method for the building 110 according to the second embodiment is also performed by a worker on the scaffolding 210 attached to the mast 200.
The scaffold 210 of the second embodiment is made up of a plurality of scaffold plates 211. The overlapping width of the scaffold plate 211 with the adjacent scaffold plate 211 can be adjusted, and the angle with the adjacent scaffold plate 211 is variable. Thereby, the scaffold 210 can be bent according to the curvature of the side wall 101 of the building 100 which is a chimney. In addition, the raising / lowering scaffold which has the scaffold 210 which has the several scaffold board | plate 211 which can perform such expansion-contraction and bending is already practically used.
In the case shown in FIG. 9, the scaffold 210 substantially corresponds to the half circumference of the side wall 101. By using this, maintenance of the entire side wall 101 of the building 100 can be performed.

DESCRIPTION OF SYMBOLS 100 Building 101 Side wall 101P Panel 102 Recessed part 103 Opening lid 104 Filler 110 Connection metal fitting 111 Connection main body part 112 Connection latching part 200 Mast 210 Scaffolding 220 Driving device 300 Connection metal fitting 301 Connection main body part 302 Grip part 303 Lid

Claims (19)

A high-rise building,
A connection fitting for connecting to at least one mast that is supposed to stand in parallel with the side wall of the building, the connection fitting stabilizes the mast connected to the connection fitting on the side wall. The mast connected to the connection fitting is attached in a position that can support the connection mast, and the connection fitting can support the mast stably.
Each base end of the connection fitting is embedded in the side wall from the completion of the building,
Building. The connection metal fitting, which is removable when connected to the mast, is covered with a cover that prevents the connection metal fitting from being exposed,
The building according to claim 1. The cover is detachable from the side wall.
The building according to claim 2. The cover is such that the connection fitting that was inside the cover is exposed when it is destroyed,
The building according to claim 2. The connection metal fittings are plural.
The building according to claim 1. At least two of the connection fittings are provided on at least one normal line of the outer surface of the side wall,
The building according to claim 1. The connection fitting is a nut;
The building according to claim 1. The connection fitting which is a nut is embedded in the side wall at least on the base end side so that one opening of the threaded inner peripheral surface is exposed from the side wall.
The building according to claim 7. The building is a building;
The building according to claim 1. At least one of the connection fittings is attached inside a recess provided on the outer surface of the side wall, and the connection fitting is not exposed from the outer surface which is substantially flush with the side wall. ,
The building according to claim 1. The recess is provided with a cover that hides the exposure of the connection fitting.
The building according to claim 10. The cover is a plate that covers the opening of the recess.
The building according to claim 11. The cover is a filler filled in the recess,
The building according to claim 11. At the base end of the connection fitting, an anchor is provided to prevent the connection fitting from coming off from the side wall.
The building according to claim 1. At least one base end of the connection fitting is embedded in a pillar or beam of a building;
The building according to claim 1. The building is a building, and at least a base end of the connection fitting is embedded in a panel constituting an outer surface of a side wall of the building.
The building according to claim 1. The base end of the connection fitting is embedded in either the panel constituting the outer surface of the side wall of the building or the pillar or beam of the building.
The building according to claim 16. It is a panel that constitutes the outer surface of the side wall of the building, and the base end of the connection fitting is embedded in the outer surface, and by attaching the panel to a predetermined position of a high-rise building that is a building,
A connection fitting for connecting to at least one mast that is supposed to be erected in parallel with the side wall of the building, the connection fitting stabilizes the mast connected to the connection fitting on the side wall. In order to support the mast connected to the connection bracket, the number of the connection bracket can stably support the mast connected to the connection bracket.
panel. A maintenance method for high-rise buildings,
A connection fitting for connecting to at least one mast that is supposed to be erected in parallel with the side wall of the building, the connection fitting stabilizes the mast connected to the connection fitting on the side wall. The bases of the connection fittings are embedded in the side wall from the time of completion of the building in such a number that the connection fittings can stably support the mast connected to the connection fittings at positions that can be supported by In such a state, at least one mast having a lower end fixed in parallel with at least one of the connection fittings of the high-rise building attached in parallel with the side wall of the building. stand up,
Attach a scaffold that can raise and lower the mast,
Raising and lowering the scaffold along the mast, and causing a worker on the scaffold to perform maintenance work on the building,
Maintenance method.

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