JP3066460B2 - How to build a tower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a tower installed on the roof of a building.

[0002]

2. Description of the Related Art In recent years, the demand for wireless communication has been increasing.
There is also a need to build communication towers in urban areas. In this case, it is effective to construct a communication tower on the roof of a building in an urban area from the viewpoints of securing the site, making effective use of the tower, and securing the tower height.

[0003] When a communication tower is constructed on the roof of a building as described above, conventionally, as a means to support the load from the tower and to support the overturning moment transmitted from the tower during an earthquake or a strong wind, after the building is completed, First, a large beam (wall gata) was installed on the rooftop, and then the construction of the tower was started.

[0004] In the conventional construction of a steel tower, as an example, a crane for the construction of a steel tower is installed on a rooftop or the like, and members are joined at the upper portion of the steel tower in a portion completed by the crane and sequentially moved upward. There is a way to build it further. Also, as another method, a fixed unit (section) of members is assembled on the rooftop, and hydraulic jacks and
A push-up method in which a motor and gears are used to push up from the roof, or a lift-up method in which a suspending member such as a step rod is used and pulled by the suspending member is used.

[0005]

The method of assembling with a crane is dangerous because it requires a lot of work at high places, and also requires curing to prevent the occurrence of obstacles to third parties due to falling of materials and the like.

On the other hand, in the case of the push-up method or the lift-up method, the steel tower members are assembled in knots at a good place on the rooftop, and the assembled part is pushed up or pulled using a jack or the like. There is no danger of working at heights as in the case of the crane method, but a temporary (or in some cases, permanent) support frame must be installed to support the gradually extending steel tower. There is a large amount of construction work.

[0007] In addition, in any of the conventional methods, the construction of a tower can only be started after the building has been completed and a girder for permanently supporting the tower on the roof has been completed.
Furthermore, after the tower is completed, antenna installation and wiring work will be performed, and it will take time until the tower can be used.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the disadvantages of the prior art, eliminate the work at high places for assembling the tower, ensure safety, and eliminate the need for structural beams or supporting frames for supporting loads from the tower. It is an object of the present invention to provide a method of constructing a steel tower that can reduce the amount of temporary materials and permanent materials, and can also perform the construction of a steel tower simultaneously with the construction work of a building, thereby shortening the construction period.

[0009]

In order to achieve the above object, the present invention provides a method for constructing a steel tower installed on the roof of a building. A space for assembling is provided, an assembling work place is provided at the upper part of this space, and the tower frame assembled one by one is suspended in the space while being added to the upper part of the tower frame that has been assembled. Slide the tower on the roof with a jack or other lifting device and pull it up.
The gist is that the lower part of the tower is fixed to the building while being inserted into the building.

According to the first aspect of the present invention, the construction of the tower at the assembly work place provided above the space for assembling the tower in the frame of the assembled building provided immediately below the installation position of the tower. Since construction work is performed, work such as assembling, finishing, and painting steel towers can be performed in low places, and while being safe,
Since the work can be done in a place with good scaffolding, quality can be ensured, and work can be performed without being affected by wind and rain. No, it is safe to construct in urban areas.

[0011] Further, although the skeleton is assembled, in the process of the entire construction work, by performing the steel tower construction work in the building under construction, the construction work can be performed simultaneously with the construction work of the building, thereby shortening the overall construction period. .

Also, the completed tower built in the space is slid to the roof and moved, and the lower part of the tower is inserted into the building frame and fixed to the building and supported there.
A large number of joints with the building can be taken, the load such as the axial force from the tower, the overturning moment, etc. can be supported at many support points of the main body frame in the building, and a large supporting frame such as a wall gutter on the roof No need to install.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIGS. 1 to 4 are process diagrams showing a general example of a method of constructing a tower which is a premise of an embodiment of a method of constructing a tower according to the present invention. As an example, a tower is completed in a building under construction, and then completed. A method of lifting a tower that has been set up on the roof will be described.

FIG. 1 shows that the underground part 1a of the building 1 is under construction on the first basement floor by the reverse striking method, and that the underground part 1b of the building 1 has been assembled up to the fifth floor. In the drawing, reference numeral 2 denotes an underground continuous wall as a retaining wall, 3 denotes a straight pillar, and 4 denotes an on-site formation pile. In addition, the construction method of the underground part 1a is not limited to the reverse construction method shown in the figure.

In the building 1 under construction, a space 5 for assembling the tower is provided inside the building 1 so as to be located immediately below the final installation position of the tower. Assemble the parts that will be. The assembling of the foundation 6 is carried out simultaneously with the assembling of the frame steel frame 17 of the building 1, and is carried out by using a large tower crane 7 for the construction of the building body.

From this state, as shown in FIG. 2, the frame steel frame 17 on the upper floor of the ground portion 1b of the building 1 is further assembled. At this time, a space 5 for assembling the tower is secured in the building 1. Then, using the large tower crane 7 used for building the building body at the same time as the building of the building frame 17 of the building 1, the main body steel frame 9, which is the upper part of the steel tower 8, is placed in a place with a good scaffold in this space 5. assemble.

The main body steel frame 9 of the tower 8 is assembled by welding, joining, painting or the like. However, by installing an all-weather temporary roof 10 on the top of the tower 8 where the assembly is completed, depending on the weather. The influence can be eliminated and a work space in a stable indoor environment can be secured.

The load of the steel tower 8 under construction is supported by the main frame of the building 1.

At this time, in the underground part 1a, the frame construction up to the second basement part is simultaneously carried out by the reverse hitting method as described above, and the steel frame assembly is completed.

As described above, the steel frame 9 of the steel tower 8 is sequentially assembled upward in the steel tower assembling space 5 formed inside the building 1 simultaneously with the construction of the frame steel frame 17 of the building 1. Then, as shown in FIG. 3, when the assembling of the tower 8 of a predetermined length is completed and the top of the tower 8 projects upward from the roof of the building 1, the communication antenna 11 is attached to the top of the tower 8 as an accessory. The parabolic antenna 12 and the vibration control device 13 are attached.

The vibration damping device 13 is, for example, of a weight-driven type and includes a considerable weight. However, the attachment of such an accessory is performed by using a large tower crane 7 for the main body construction of the building 1.
Safe and easy to do.

In this step, the assembled tower 8
A vertical jack 14 and a step rod 15 of a center hall type are installed on the frame 17 of the building 1 with the vertical jack 14 and the step rod 15 facing the space 5 for assembling the tower as a device for raising the roof to the roof.

FIGS. 8 and 9 show a mounting structure of a vertical jack 14 and a step rod 15 of a center hole type. A temporary girder 19 is provided above a frame steel frame 17 via a beam receiving stand 18.
With this temporary girder 19, a vertical jack 14 is connected via a jack receiving beam 20.
I support. Also, guide rails are provided vertically on the side surface of the steel column 17a on the side of the frame steel frame 17 facing the space 5 for assembling the tower.
21 is provided.

On the other hand, a bracket 22 is provided on the side of the column 9a of the main body steel frame 9 on the side of the tower 8 facing the guide rail 21.
The bracket 22 is slidably engaged with the guide rail 21 via the sliding shoe 23. 9b is a steel frame 9 in the figure.
Is shown.

Then, in order to engage the lower part of the step rod 15 with the bracket 22 and pull up the steel tower 8, the vertical jack 14 is contracted and the step rod 15 is raised as shown in FIG. The tower 8 is moved upward through the bracket 22. At this time, the bracket 22 slides smoothly upward along the guide rail 21 via the sliding shoe 23.

When the tower 8 is lifted by one stroke of the vertical jack 14, the stroke of the vertical jack 14 is reduced while holding the step rod 15, and then the step rod 15 is pulled up to raise the tower 8 in the same manner as described above. Slide again. This is repeated, and the tower 8 is pulled up to the rooftop like a scale insect. A hoist crane 24 for useless work is provided below the tower 8.

The steel tower 8 thus lifted is
Since the part that goes upward from the building 1 has already been completed, there is no danger of falling objects, and it is sufficiently safe even when building in an urban area or the like.

The period during which the steel tower 8 is lifted is about two days when it is constructed inside the building 1 having a height of 106 m and a height of, for example, 23 as shown in FIG.

FIG. 10 shows a vertical jack 14 and a step rod 15.
FIG. 3 shows the arrangement of devices for lifting, etc. and the plane of the building on the raising floor. As an example, four vertical jacks 14 are arranged at opposing positions facing the space 5 for assembling the steel tower 8, respectively. Building 1 is in space 5 on the side where 14 is not installed.
The guide rail 21 is provided on the steel column 17a.

FIG. 5 shows a state in which the lifting of the tower 8 is completed. As shown in FIG. 6, the base part 6 of the tower 8 (portion surrounded by a broken line in FIG. 6) is inside the frame 17 of the building 1 (see FIG. 6). 6 and the load from the tower 8 is transmitted to the building 1 via the lower frame of the tower 8.

The top of the building 1 and the steel frame 9 of the tower 8
Because there is a portion that is structurally not tied between
In the meantime, a vibration control device 26 that functions to apply a damping force to the tower 8 and the building 1 using the relative displacement is installed. As an example, the vibration damping device 26 can employ a high damping system in which a super-durable oil damper integrated with the frame steel frame 17 of the building 1 absorbs vibration due to an earthquake or strong wind.

The joint between the base 6 of the tower 8 and the steel frame 17 at the top of the building 1 shown in FIG. 5 has many pillars and large beams, so that it is used as a general living room. Although it is difficult to use, by providing a floor after the construction of the steel tower 8, it becomes a space that can be used for radio rupture tubes, cable processing rooms, pipe spaces, warehouses and the like.

The lower space 5 located immediately below the tower 8 is
Use the hoist crane 24 for useless work provided at the lower part of the tower 8 to install the floor 25, walls and beams, and to perform interior work, so that it can be used as a general living room in addition to pipe spaces, warehouses, etc. Becomes Although the column 27 located immediately below the tower 8 is provided in the illustrated example, it may be unnecessary if a predetermined strength can be secured by a structural design.

11 and 12 show a second example of the general example. As a method of pulling up the tower 8, a push-up device is installed at the final fixed position of the tower 8 of the building 1 in which the building has been completed.
It is a method of assembling on the upper floor in the tower 1 of the steel tower, and sequentially pushing up while adding the completed assembly.

A space 30 for pushing up the tower 8 is provided on the upper floor where the tower 8 is finally fixed in the constructed building 1, and a push-up device 28 is installed in this space 30. As the push-up device 28, for example, a hydraulic device or an AM
A device using a motor and a screw used in the URAD method can be considered.

An assembling site 29 for the tower 1 is provided in connection with the installation location of the push-up device 28, where the tower 8 is assembled and painted one section at a time, and the completed section is pushed up.
It moves to 30 and is joined to the lower part of the steel tower 8 already completed and supported by the temporary placing gantry 31 in the space 30 for lifting.

When the joining is completed and integrated with the already completed part, the entire steel tower 8 is pushed up by one push-up device 28 by one node. When the lifting is completed, the load of the tower 8 is supported by the temporary placing stand 31, and one section of the tower 8 to be added to the lower part is assembled. After the assembly is completed, the tower 8 is joined to the lower part of the tower 8 in the same manner as described above and re-attached. Push up one clause,
This is repeated, and a steel tower is installed at a predetermined height.

Attachments and vibration control devices protruding from the plane of the tower 8, such as a parabolic antenna 12 attached to the top of the tower 8
13 is when the top of the tower 8 protrudes to the roof of the building 1,
The installation work is performed using a large tower crane 7 for the construction of the building body.

Numeral 32 in the figure indicates members such as rollers and sliding bearings which serve as a guide when pushing up while transmitting the overturning moment to the building 1 during construction of the steel tower 8. In FIG. 12, reference numeral 33 denotes a relative displacement-based vibration damping device similar to the first embodiment.

As shown in FIGS. 13 and 14, similarly to the second example of the above-mentioned general example, the method of constructing a steel tower according to the present invention, as shown in FIG. 13 and FIG. A space 35 for raising the tower 8 is provided, and an assembling site 34 for the tower is provided on the upper floor in connection with the space 35. As in the first embodiment, the apparatus for lifting the steel tower 8 uses a center-hole type vertical jack 14, a step rod 15, and the like.

In this case, the base part 6 and the main body steel frame 9 of the tower 8 are assembled one section at a time at an assembly place 34 provided on the upper floor of the building 1, and after the assembly is completed, the tower 6 is lifted by an overhead crane 36 installed on the roof. In the space 35, and joined to the upper portion of the steel tower 8 for which construction has been completed.

After the joining, the steel tower 8 is lowered in the space 35 by one node using the vertical jack 14 and the step rod 15. By repeating this, a tower of a predetermined length is assembled in the space 35.

When the steel tower 8 reaches a predetermined length and the top protrudes to the roof of the building 1, the parabolic antenna 12, the vibration damping device and the large tower crane 7 for the construction of the building body are used in the same manner as in the general example. Attach an accessory such as 13 to the top of the tower 8.

In the drawing, reference numeral 10 denotes a temporary roof of all weather type similar to the first example, and reference numeral 32 denotes a roller which transmits a turning moment to the building 1 during construction of the steel tower 8 similar to the second example, and serves as a guide when pushing up. , Slide bearings and the like.

When the attachment of the accessory to the top of the tower 8 is completed, the vertical jack 14 and the step rod 15 are used to pull up and install the same as in the first example.

[0046]

As described above, the method for constructing a tower according to the present invention provides a method for assembling a tower provided in an upper part of a space for assembling the tower in a frame of an assembled building which is provided immediately below the installation position of the tower. Since the construction work of the tower is performed at the work place, the work such as assembling, finishing, and painting of the tower can be performed in low places, and it is safe. Work without being affected by
Since the part of the tower that goes out of the building is a completed part, there is no danger of falling objects and it is safe to construct in urban areas.

Further, although the skeleton is assembled, in the entire construction work process, by performing the steel tower construction work in the building under construction, the construction work can be carried out simultaneously with the construction work of the building, thereby shortening the overall construction period. .

Also, the completed steel tower constructed in the space is slid to the roof and moved, and the lower part of the steel tower is fixed to the building while being inserted into the building frame, and is supported here.
A large number of joints with the building can be taken, and loads such as the axial force and overturning moment from the tower can be supported at many support points of the main body frame inside the building, and a large support frame such as a wall gutter is installed on the roof No need to do.

[Brief description of the drawings]

FIG. 1 is a first process diagram showing a first example of a general example of a method for constructing a steel tower according to the present invention.

FIG. 2 is a second process diagram showing a first example of a general example of a method for constructing a steel tower according to the present invention.

FIG. 3 is a third process diagram showing a first example of a general example of a method for constructing a steel tower according to the present invention.

FIG. 4 is a fourth process diagram showing a first example of a general example of the method for building a steel tower according to the present invention.

FIG. 5 is a fifth process diagram showing a first example of a general example of the method for building a steel tower according to the present invention.

FIG. 6 is a plan view of a building at a tower installation position, showing a first example of a general example of a tower construction method of the present invention.

FIG. 7 is a plan view showing a first example of a general example of a method for constructing a tower according to the present invention, showing a building below a tower installation position.

FIG. 8 is a vertical sectional front view of a lifting apparatus showing a first example of a general example of a method for constructing a steel tower according to the present invention.

FIG. 9 is a plan view of a lifting apparatus showing a first example of a general example of a method for constructing a steel tower according to the present invention.

FIG. 10 is a layout diagram of a lifting device showing a first example of a general example of a method for constructing a steel tower according to the present invention.

FIG. 11 is an explanatory view showing a second example of the general method of constructing a tower according to the present invention, during the construction of the tower.

FIG. 12 is an explanatory view of a completed state of the tower construction, showing a second example of the general example of the tower construction method of the present invention.

FIG. 13 is an explanatory view showing a method of constructing a steel tower according to an embodiment of the present invention during the construction of the steel tower.

FIG. 14 is an explanatory view showing a steel tower construction method according to an embodiment of the present invention while the steel tower is being lifted.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Building 1a ... Underground part 1b ... Above ground part 2 ... Underground continuous wall 3 ... Structural pillar 4 ... Site formation pile 5 ... Space 6 ... Foundation part 7 ... Large tower crane 8 ... Iron tower 9 ... Main body steel frame 9a ... Column 9b … Beams 10… roofs 11… communication antennas 12… parabolic antennas 13… vibration dampers 14… vertical jacks 15… step rods 17… framed steel frames 17a… steel columns 18… beam supports 19… temporary girders 20… jack receivers 21… Guide rails 22… Brackets 23… Sliding shoes 24… Hoist cranes 25… Floor 26… Seismic damping devices 27… Columns 28… Push-up devices 29… Assembly sites 30… Space 31… Temporary mounting bases 32… Members 33… Vibration damping devices 34 … Assembly site 35… Space 36… Overhead crane

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Soutaka Takahashi Kashima Construction Co., Ltd. 1-2-7 Moto-Akasaka, Minato-ku, Tokyo (56) References JP-A-54-123231 (JP, A) JP-A Sho 56-6876 (JP, A) JP-A-48-2849 (JP, A) JP-A-6-300081 (JP, A) JP-A-9-32249 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04H 12/00-12/34

Claims (1)

(57) [Claims] 1. A method for constructing a tower to be installed on the roof of a building, wherein a space for assembling the tower is provided in the frame of the building that is located immediately below the installation position of the tower, and assembled at the upper part of the space. A work place is provided, where the tower frame assembled one by one is suspended in the space while being added to the upper part of the assembled tower frame, and after the full length is completed, the tower is slid to the roof with a jack or other lifting device to lift it up A method for constructing a tower, wherein the lower part of the tower is inserted into a building body and fixed to the building.