JP4684886B2 - Exterior wall reforming structure and construction method of exterior wall for reforming - Google Patents

Description

  The present invention relates to an outer wall reforming structure and a method for constructing an outer wall for reforming, and more particularly, to an outer wall reforming structure having both a ventilation layer and earthquake resistance while leaving an existing wall, and a method for constructing an outer wall for reforming. .

  For example, instead of so-called scrap-and-build, dismantling a wooden or steel-framed residential building of about 1 to 3 floors, leave the existing wall of the existing building as it is, and use a new siding board etc. on the outside House renovation to construct the wall material is actively performed. This is a technology to prevent the generation of waste materials due to the dismantling of existing buildings from the viewpoint of environmental impact, and to increase the heat insulation and earthquake resistance of existing houses at a lower cost through earnest research by housing manufacturers and building materials manufacturers. This is largely due to the results of progress.

  For example, as a result of earnest research / development by the applicant, there is an outer wall reforming structure disclosed in Patent Document 1. This outer wall reforming structure is a reforming structure in which a body edge is fixed to an existing wall, and an outer wall reforming wall is fixed to the body edge, and a substrate portion directly fixed to the existing wall and an outer wall for reforming are fixed. The existing wall is reformed while securing a ventilation layer by using a metal body edge composed of a front plate portion and a connecting portion connecting the substrate portion and the front plate portion.

  The outer wall reforming structure disclosed in the above-mentioned Patent Document 1 has as its main purpose to minimize the amount of overhang when attaching the outer wall for reforming while leaving the existing wall as it is, and to secure a ventilation layer. It is not intended to improve seismic performance. Therefore, the Applicant has conducted extensive research to leave the existing wall and to secure the ventilation layer while reducing the amount of overhang when the outer wall for renovation is attached. We have been developing the structure.

  By the way, Patent Documents 2 to 4 can be cited as techniques relating to a reformed wall or its structure for improving the earthquake resistance already disclosed. The load-bearing wall construction method and the load-bearing wall structure disclosed in Patent Document 2 remove the existing middle beam from the shaft assembly to which the existing wall is attached, install a new middle beam with a notch, and have the strength A construction method and a load-bearing wall structure in which a brace is passed through the notch and an end of the load-bearing brace is fixed to a corner portion of the shaft assembly. Further, Patent Document 3 discloses a bearing wall having a configuration in which a low yield point steel is interposed between breaths provided on the wall in order to impart earthquake resistance.

  Further, in Patent Document 4, an existing wall is left, and two long members are assembled on the outside so as to be rotatable at the center of both sides to form a set of base units, and a plurality of base units are attached. An outer wall structure is disclosed in which both ends of the long material are fixed to an existing base, girder, beam or the like, and a new outer wall is attached to the outside.

JP 2005-179987 A JP 2004-324133 A JP 2001-90376 A Japanese Patent Laid-Open No. 10-238065

  In the outer wall reforming structure and the bearing wall disclosed in Patent Documents 2 and 3 described above, it is necessary to remove the mortar, the exterior material, the middle rail, and the like on the surface of the existing wall and the load-bearing wall, and the generation of waste material is unavoidable. Moreover, in the load-bearing wall disclosed in Patent Document 3, the brace structure is complicated, and it is undeniable that the material cost increases and the workability decreases. Further, in the load bearing wall disclosed in Patent Document 4, since the long material as the base material is fixed to an existing shaft assembly or the like only at both ends thereof, the strength of the attachment portion between the long material and the existing building The shortage is a concern. In other words, in order for a load-bearing wall to exhibit the required seismic resistance, the seismic member must exhibit its performance only after there is a close connection between the earthquake-resistant member and existing structural members (existing walls, existing columns, etc.). Can do.

  The present invention has been made in view of the circumstances as described above, and has both a ventilation layer and seismic performance in a state where the existing wall is left, and the existing wall, the existing column, etc., and the outer wall for renovation. An object of the present invention is to provide an outer wall reforming structure and a method for constructing an outer wall for reforming, in which the strength of the mounting portion is high and the construction is relatively easy.

  In order to achieve the above object, an outer wall reforming structure according to the present invention is an outer wall reforming structure in which at least two trunk edges extending in a vertical direction are fixed to an existing wall, and an outer wall plate for reforming is fixed to the trunk edge. The body edge is formed of a metal material and is fixed to an existing wall; a front plate portion extending in parallel with the substrate portion and fixed to the outer wall plate; and a substrate portion And a connecting portion that connects the front plate portion, and at least a portion of the substrate portion does not have a front plate portion that is opposed to the front plate portion. In the outer wall reforming structure having a barrel edge to which the base plate and the existing wall are fixed by inserting a fixture from the side, a plurality of horizontally long holes are formed in the coupling portion of the barrel edge. A diagonal material is stretched over the torso edge of the Characterized in that it is connected by directly or indirectly fasteners Horizontal holes of respective of furring strips.

  As the material of the metal body edge applied to the outer wall reforming structure of the present invention, iron, stainless steel, aluminum / magnesium alloy plated steel plate or the like can be used, and it can be formed by sheet metal processing or extrusion processing. The metal trunk edge of the present invention is fastened to the existing wall in the vertical direction (as a vertical member). More specifically, on the outside of the existing outer wall made of metal siding material, ceramic siding material, ALC panel, tile, etc., fixing bolts and screws extending to the existing pillars fixing the existing wall The metal barrel edge is fixed by the tool. The mounting to the existing pillar is preferably performed with a plurality of screws, bolts, etc., and the metal outer edge is firmly fixed to the existing pillar through the existing wall, so that the outer wall for reforming is attached to the outer wall of the metal. It will be firmly fixed to the existing pillar.

  Here, the shape of the metal body edge is connected to the base plate portion directly fixed to the existing wall, the front plate portion extending in parallel with the base plate portion to which the outer wall plate is fixed, and the base plate portion and the front plate portion. Further, at least a part of the substrate part is formed with a region where no opposing front plate part is present, so that a part of the region is fixed from the surface side. The tool can be inserted. By using the body edge as the metal body edge, the thickness of each of the substrate part and the front plate part can be reduced, and therefore the amount of the outer wall for renovation extending from the existing wall can be reduced as much as possible. . Furthermore, a sufficient ventilation layer can be secured between the substrate portion and the front plate portion by molding the trunk edge into the above-described shape. In addition, by providing a region where the surface facing the substrate portion does not exist in a part of the front plate portion, the construction for fixing the substrate portion to the existing wall becomes easy. Furthermore, in the outer wall reforming structure of the present invention, when the existing column or the like has a predetermined strength, the outer wall for reforming is fixed to the outside with the existing wall or the existing column remaining as it is. Therefore, the problem of waste material treatment that occurs when removing existing walls, etc. cannot occur in principle.

  In addition, a plurality of horizontally long holes are drilled in the connecting portion of the metal body edge described above. Here, as the shape of the horizontally long hole, an appropriate shape such as an ellipse, a horizontally long rectangle, or a shape in which each corner portion of the horizontally long rectangle is chamfered can be selected. For example, in the case of installing a single reforming outer wall between two opposing existing pillars to which the existing wall is fixed, two metal barrel edges along the existing pillar are used as vertical members through the existing wall. And fix to the existing pillar. Here, one or a plurality of diagonal members having an appropriate form are attached between the two metal barrel edges. For example, when two diagonal members are crossed between the metal barrel edges, the existing wall-side diagonal member and the outer diagonal member are attached to the metal barrel edge by the thickness of the diagonal member. (The projecting position from the existing wall) will be different. Therefore, in the present invention, the mounting hole drilled in the connecting portion is formed in a horizontally long shape, so that the mounting position can be adjusted particularly when a plurality of diagonal members are crossed for construction.

  Further, the diagonal member to be applied is not particularly limited, and a member that has at least a required tensile strength and that is not tensile-destructed against the design seismic force may be used. Needless to say, the joint (joint) between the diagonal member and the metal body edge needs to have sufficient joint strength.

  The diagonal member can be directly attached to the laterally long hole of the metal barrel edge with a fixture such as a bolt, or can be indirectly attached to the metal barrel edge via a metal attachment member, for example. By attaching the diagonal member to the oblong hole, the diagonal member does not protrude outside the front plate part of the metal barrel edge, and the diagonal member becomes an obstacle when attaching the outer wall for reforming to the front plate part of the metal barrel edge. The problem of becoming may not occur.

  An appropriate outer wall for reforming is fixed to the outside of two or more vertically extending metal barrel edges. Examples of the outer wall used for reforming include metal siding materials, ceramic siding materials, and ALC panels. As a method of fixing the outer wall for reforming to the metal shell edge, there is a method of fixing an appropriate fixing metal fitting to the metal drum edge and installing the outer wall for reforming on the fixing metal fitting. According to the outer wall reforming structure of the present invention, by applying the metal barrel edge described above, for example, it is relatively easy to place a plurality of diagonal materials between the metal barrel edges while securing a ventilation layer with the existing wall remaining. It becomes possible to install and install. By forming an outer wall structure consisting of existing walls, air in the ventilation layer and a new outer wall material layer, it is possible to ensure the sound insulation and heat insulation of the building and provide seismic performance while preventing the generation of waste materials. It becomes possible.

  In addition, another embodiment of the outer wall reforming structure according to the present invention further includes a mounting member including a perforated flat plate portion and a perforated rising portion orthogonal to the flat plate portion in the outer wall reforming structure, There is a hole through which the fixing tool penetrates, and the hole of the rising part and the horizontally long hole of the connecting part of the trunk edge are connected by the fixing tool in a positioned posture. The body edge and the diagonal member are indirectly connected by connecting the hole and the hole at the end of the diagonal member with the fixture in a positioned posture.

  The outer wall reforming structure of the present invention relates to an embodiment in which a diagonal member is indirectly attached to the laterally long hole of the metal body edge described above. As the member used here, for example, a mounting member composed of a perforated flat plate portion having a plurality of bolt holes and a perforated rising portion orthogonal to the flat plate portion and having a plurality of bolt holes can be used. General-purpose L-shaped angle steel can be used.

  Bolt holes are drilled at the end of the diagonal member, and both bolts are fastened while positioning the bolt hole and the hole of the flat plate portion of the mounting member. Further, both of the laterally long hole of the metal body edge and the hole of the rising portion of the mounting member are positioned and bolted together. Here, the tip of the bolt that stops the flat plate portion and the diagonal member can abut against the existing wall, but the mounting member slides on the surface of the connecting portion because the hole drilled in the connecting portion of the metal barrel edge is a horizontally long hole. can do. Therefore, even if the bolt tip comes into contact with the existing wall, it is possible to sufficiently fix the mounting member and the diagonal member while finely adjusting the position of the mounting member with respect to the metal barrel edge.

  In another embodiment of the outer wall reforming structure according to the present invention, in the outer wall reforming structure, a second body edge is provided between the two body edges facing each other, and the second body edge is provided. The edge connecting portion is formed with a notch through which the diagonal material is passed, and the diagonal material is spanned between the two trunk edges in a posture passing through the notch. To do.

  The outer wall reforming structure of the present invention is configured by, for example, installing three metal trunk edges in the vertical direction along three existing pillars (structural pillars and inter-columns) provided along the existing wall, and reforming the exterior thereof. The present invention relates to an embodiment for fixing an outer wall. In this embodiment, when the diagonal member is bridged between the metal barrel edges at both ends, the diagonal member connects the connecting portion of the metal barrel edge (second metal barrel edge) disposed in the center. By making it possible to penetrate, the problem that the diagonal material becomes an obstacle when the outer wall for reforming is attached to the surface of the front plate portion of each of the three metal barrel edges cannot occur. In view of this, for example, a long notch in the vertical direction is perforated in the connecting portion of the metal barrel edge disposed in the center so that the diagonal material can be passed through the notch.

  In the embodiment in which one reforming outer wall is mounted on the three metal barrel edges, the diagonal member attached between the metal barrel edges intersects with the two diagonal members between the metal barrel edges at both ends. In addition to the configuration in which the two diagonal members are installed in the vertical direction of the metal barrel edge, only one diagonal member is attached. The embodiment can be variously set, such as a configuration in which a diagonal unit composed of two diagonal materials intersecting the upper and lower sides of the diagonal material is attached.

  By adopting a configuration in which the diagonal member and the metal barrel edge are indirectly attached via the attachment member, the workability at the time of attachment can be improved as compared with the case where the diagonal member is directly attached to the metal barrel edge.

  In another embodiment of the outer wall reforming structure according to the present invention, the diagonal member is composed of a flat plate-shaped or round bar metal and a member including a turnbuckle.

  As the diagonal material, a long flat steel or a long round bar (steel bar) can be used. Furthermore, a round bar and a known turnbuckle can be used in combination, and such diagonal material is used. Thus, it becomes possible to impart earthquake resistance to the outer wall for reforming at low cost. Even when a turnbuckle is applied, it is desirable to provide a perforated flat plate at both ends so that it can be bolted to the mounting member.

  Further, in another embodiment of the outer wall reforming structure according to the present invention, the trunk edge is attached to an existing wall on the first floor of a building, and the trunk edge is attached to an existing column to which the existing wall is attached. And the end of the trunk edge is connected to both the existing base horizontal member and the existing horizontal member constituting the first floor ceiling.

  The present invention relates to an outer wall reforming structure of, for example, a one-story house or an outer wall reforming structure of an existing wall on at least the first floor of a multi-storey house. Here, the horizontal member constituting the first-floor ceiling means a general body such as a girder or a beam, and is a structural member that fixes an existing wall in the horizontal direction.

  The length of the metal trunk edge is at least the length that spans the horizontal base material for the base and the horizontal base material that constitutes the first floor ceiling, and the metal trunk edge is fixed at a plurality of locations on the existing pillars, By fixing to the material, it is possible to firmly fix the frame structure member of the existing building and the metal body edge, and thus realize a firm attachment between the outer wall for reforming and the frame structure member of the existing building. It becomes possible. Here, when connecting the metal barrel edge and the diagonal member through the L-shaped angle, a perforated metal plate is welded to one end of the L-shaped angle, and this metal plate is attached to the horizontal member with bolts or screws. It can also be fixed. In addition, also in the existing wall which has openings, such as a window, the seismic reinforcement which combined the diagonal material suitably can be performed in the upper-lower part of an opening.

  Further, in another embodiment of the outer wall reforming structure according to the present invention, the trunk edge is attached to an existing wall at a level of two or more floors of the building, and the trunk edge is attached to an existing column to which the existing wall is attached. In addition to being connected through an existing wall, the end of the trunk edge is connected to both the horizontal member for the floor of the floor and the horizontal member for the ceiling of the floor.

  The outer wall reforming structure of the present invention relates to a reforming structure in which an outer wall for reforming is formed on an existing wall on the upper floor in addition to the existing wall on the first floor in a building composed of at least two floors or more. . The outer wall for renovation can change the material, thickness, etc. for each floor, but at least by making it a reform structure with the above-mentioned metal body edge and diagonal material, the entire building consisting of multiple floors, It becomes possible to provide heat insulation performance and seismic performance.

  The renovation outer wall construction method according to the present invention is a renovation outer wall construction method in which a renovation outer wall plate is attached to the outside of an existing wall, and the existing pillar or existing horizontal member to which the existing wall is attached. A first step of determining whether or not the pulling strength satisfies the allowable value; and if the pulling strength satisfies the allowable value, the substrate portion is parallel to the substrate portion. A front plate portion to which the outer wall plate is fixed, and a connecting portion that connects the substrate portion and the front plate portion, and there is a front plate portion that is opposed to at least a part of the substrate portion. And a second step of attaching a metal barrel edge having a horizontally long hole in the connecting portion to at least the existing pillar through the existing wall, and a perforated flat plate portion and a perforated rising portion perpendicular to the flat plate portion. It is spanned between the mounting member and a plurality of metal barrel edges. Prepare a diagonal material with a hole at the end, connect it with the fixture while positioning the hole at the rising part and the horizontally long hole at the connecting part, and fix it while positioning the hole at the flat part and the hole at the diagonal part A third step of connecting the barrel edge and the diagonal member by connecting with a tool, and a fourth step of attaching an outer wall plate for reforming to the surface of the front plate portion of the metal barrel edge. Features.

  First, in the first step, as a premise of leaving the existing wall and the existing pillar, the degree of deterioration thereof, that is, whether or not they have strength suitable for reinforcement is measured. As one example of this measuring method, a measuring tool is prepared which is composed of a fixing tool such as a bolt or a screw having a required tensile strength and a breaking member having a breaking strength weaker than the tensile strength. When the fixture is inserted into an existing column via an existing wall and pulled out, if the fracture member breaks before the fixture is pulled out, the pull-out strength of the fixture and the existing column has the required strength. Can be determined. On the other hand, if the fixture is pulled out from the existing column and the existing wall before the fracture member is fractured, the existing column etc. may deteriorate and obtain the required tensile strength (friction strength) with the fixture. Therefore, it can be determined that it is necessary to remove it and reassemble it with a new pillar or the like. After confirming the strength of the existing column or the existing horizontal member in the first step, the process proceeds to the second step of fixing the metal trunk edge to the existing column or the existing horizontal member via the existing wall. When moving to the second step, it is desirable to specify the positions of main reinforcing bars, hoop bars, etc. of existing columns by simultaneously using an X-ray imaging screen by radar exploration. This is because the metal barrel edge can be efficiently attached by the fixture without causing interference between the fixture such as bolts and screws and the reinforcing bar.

  According to the method for constructing the outer wall for reforming of the present invention, after sufficiently confirming the strength of the existing pillar and the existing horizontal member, the metal body edge can be attached to the existing pillar, etc., so the strength of the outer wall reforming structure Can be reliably identified. In addition, it is possible in principle to prevent the generation of waste materials due to the dismantling of existing walls and the like, and it is possible to efficiently construct a renovation outer wall having excellent heat insulation and seismic performance. In particular, as described above, a metal barrel edge having a horizontally long hole is used in the connecting portion, and the diagonal member and the metal barrel edge are connected via an L-shaped angle or the like, so that the diagonal member intersects. However, the danger that the bolt holes do not coincide at the time of mounting can be avoided.

  As can be understood from the above description, according to the outer wall reforming structure and the method for constructing the outer wall for reforming according to the present invention, the connecting portion connecting both the base plate portion and the front plate portion is formed with a horizontally elongated hole. By using a plurality of metal barrel edges and attaching an appropriate diagonal material to the metal barrel edges, it is possible to easily construct a renovation outer wall having both heat insulation performance and seismic performance.

  Hereinafter, an embodiment of a method for constructing an outer wall reforming structure and an outer wall for reforming according to the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of an embodiment of a metal shell edge used in an outer wall reforming structure according to the present invention. FIG. 3 is a diagram showing a metal shell edge shown in FIG. FIG. 5 is a sectional view showing an embodiment of the outer wall reforming structure of the present invention.

  The metal trunk edge 10 shown in FIG. 1 is formed, for example, by bending an alloy-plated steel plate having a thickness of 1.2 mm. The metal barrel edge 10 is generally long, and includes a substrate portion 11 serving as a fixing surface to an existing wall, a pair of connecting portions 12 and 12 extending from the left and right side portions of the substrate portion 11 to the surface side, and each connection. It consists of a pair of front plate portions 13 and 13 extending in parallel with the substrate portion 11 from the tips of the portions 12 and 12, respectively. The thickness of the metal trunk edge 10, that is, the width of the connecting portion 12 is, for example, 12 mm, and the thickness can be reduced to about half compared with a conventional one having a thickness of 20 to 30 mm.

  The front plate portions 13, 13 extend in the direction approaching each other from the tips of the connecting portions 12, 12, but since there is a gap between the front plate portions 13, 13, the left and right side portions of the substrate portion 11 In the region S excluding the vicinity, the front plate portion 13 does not exist on the surface side of the substrate portion 11. A plurality of holes 14, 14,... For allowing a fixing tool such as a screw to pass through the region S are perforated, and the board portion 11 can be fixed to the existing wall by screwing the screw into the hole 14 from the surface side. ing. In addition, a groove 15 is formed on the front plate portion 13 over the entire length in the longitudinal direction of the front plate portion 13 to indicate a position into which a fixing tool such as a screw is inserted when the fastener is fixed to the front plate portion 13. Yes.

  Both of the connecting portions 12 and 12 are provided with a plurality of horizontally long elliptical holes 12a, 12a,... Perforated at regular intervals along the longitudinal direction thereof. A hole hole of a perforated L-shaped angle, which will be described later, is positioned in the elliptical hole 12a so that the L-shaped angle can be bolted. By making the shape of the hole into a horizontally long elliptical shape, it is possible to finely adjust the position of the L-shaped angle when one of two intersecting diagonal members is attached to the L-shaped angle as will be described later. Become. In addition, when the tip of the bolt that connects the L-shaped angle and the diagonal member comes into contact with the existing wall, even if the position of the L-shaped angle is slid for fine adjustment, both the holes are It becomes easy to align.

  On the other hand, in the metal trunk edge 10A shown in FIG. 2, the shape and thickness are the same as those of the metal trunk edge 10 described above, but a vertically long notch 12b is perforated in the connecting portion 12. This is because three metal cylinder edges are provided side by side, and when the diagonal material is passed between the metal cylinder edges at both ends thereof, the metal cylinder edge 10A is disposed at the center thereof, so that 1 is provided in the notch 12b. It is possible to bridge between the metal barrel edges 10 and 10 at both ends while penetrating the book or two diagonal members.

  FIG. 3 shows a mortar that constitutes an existing wall 60 by fixing screws 90 A and 20 B using screws 91 at the positions of the grooves 15 of the front plate portion 13 and through the holes 14 of the substrate portion 11. The state which penetrates the layer 61 and the exterior material 62, and is further made to penetrate and fix to the existing pillar 63 is shown. By using the body edge made of metal as in the present invention, it is possible to sufficiently fix only one portion of the fastening bracket 20 to the front plate portion 13 by using screws, and the lower side of FIG. Even when the screws are fastened at positions shifted laterally from the center of the fasteners, like the fasteners 20B, the fixed state can be sufficiently maintained. Therefore, the width of selection of the fixing position of the fastener can be set wide, and the fastener can be fixed at an optimum position according to the fixing position of the outer wall plate for reforming.

  Further, by fixing the metal barrel edge 10 to the existing pillar 63 with a plurality of screws 90, 90,..., It is possible to firmly fix the existing structural member and the outer wall plate for reforming via the metal barrel edge. It becomes possible.

  A perforated L-shaped angle 50 is positioned in the oblong hole 12 a drilled in the connecting portion 12 of the metal barrel edge 10, and the metal barrel edge 10 and the diagonal member 40 are fixed by bolts 54. The L-shaped angle 50 includes a flat plate portion 51 that faces the existing wall 60 and a rising portion 52 that is orthogonal to the flat plate portion 51, and both are provided with bolt holes or screw holes. As shown in FIG. 4, the L-shaped angle 50 and the existing wall 60 and the existing pillar 63 or the existing horizontal member 65 are screw-fixed with screws 53 and 53 through screw holes drilled in the flat plate portion 51. Can do. For this screw 53, for example, a lag screw bolt of M12 having a length of 100 mm can be used. Further, the bolt hole drilled in the rising portion 52 and the horizontally long hole 12 a of the connecting portion 12 can be positioned, and the L-shaped angle 50 and the metal trunk edge 10 can be bolted by the bolt 54. Here, by making the hole drilled in the connecting portion 12 into a horizontally long shape, the alignment of both when the L-shaped angle 50 is fixed to the metal barrel edge 10 can be easily finely adjusted.

  FIG. 5 shows a cross-sectional view of an embodiment of an outer wall reforming structure in which an outer wall plate 30 for reforming is installed outside the metal barrel edge 10. In the figure, illustration of diagonal materials is omitted. As described above, the metal trunk edge 10 is fixed by the screw 90 that passes through the existing wall 60 and reaches the existing column 63. The existing wall 60 of the illustrated embodiment is composed of a mortar layer 61 and an appropriate exterior material 62, and a waterproof sheet 81 is interposed between the existing wall 60 and the existing pillar 63. It goes without saying that the existing wall structure to which the outer wall reforming structure is applied is not limited to the illustrated embodiment. The outer wall material 62 may be a wall material of any specification such as an ALC plate, an RC plate, a metal siding, or a ceramic siding. Further, as the type of the screw 90 to be used, a screw having an appropriate specification may be selected from a wooden screw, a techno screw, or the like according to the case where the existing pillar as an existing structural member is a wooden structure or a steel frame.

  The fastening bracket 20 is fixed to the front plate portion 13 of the metal barrel edge 10 with screws 91. The attachment portions 31 and 32 of the reforming outer wall plates 30 and 30 are attached to the upper and lower parts of the fastening metal 20, and a waterproof seal 83 is applied to both the attachment portions. More specifically, an upper plate locking portion 22 and a lower plate locking portion 21 are provided at the tip of the fastening bracket 20, and the upper end of the lower reforming outer wall 30 is locked by the lower plate locking portion 21. The lower end of the upper reforming outer wall 30 is locked by the upper plate locking portion 22. Here, as a structure of the fastening metal fitting, an engagement plate having a screw groove into which the screw 91 is screwed is further provided, and the screw 91 is screwed into the screw groove, whereby loosening of the screw 91 can be prevented. Such a fastener may be used (not shown). As still another embodiment of the fastening bracket, a rear rib protruding on the rear surface is formed in an arc shape, and the outer peripheral surface of the rear rib is formed between the front plate portions 13 and 13 of the metal barrel edge 10. It is also possible to configure such that it can be fitted into the opening (not shown). As the outer wall plate 30 for reforming, an appropriate outer wall plate such as a ceramic siding board, a metal siding board, or an ALC plate can be selected.

  In the outer wall reforming structure described above, since the metal shell edge 10 having a small thickness is used, the width of the new outer wall projecting outward from the existing wall 60 can be minimized. The ventilation layer P can be secured between the outer wall plate 30 for reforming and the outer wall plate 30 for reforming.

  6 is a front view of the outer wall reforming structure corresponding to the cross-sectional view of FIG. In addition, here, the metal body edges 10, 10A, 10 are screw-fixed to the outside of the three existing columns 63, 63, 63, and the metal body edges 10, 10A, 10 are horizontally mounted above the existing columns. An embodiment extending from the material 64 to the horizontal member 65 on the foundation 66 will be described. The existing pillar 63 may be a structural pillar or a stud.

  Each metal body edge 10, 10A, 10 is fixed to the existing pillars 63, 63, 63 by a plurality of screws 90, 90,... And is also fixed to the horizontal members 64, 65 by screws. . L-shaped angles 50, 50 are bolted to the metal barrel edges 10, 10 at both ends, and diagonal members 40, 40 made of flat steel are bolted to the L-shaped angles 50, 50 and the metal barrels are fixed. It is stretched across the edges 10 and 10 in an intersecting posture. The intersecting portion of the diagonal members 40, 40 is spanned between the metal trunk edges 10, 10 while penetrating through the notch 12b of the central metal trunk edge 10A. The diagonal member does not become an obstacle when the outer wall plate 30 for renovation is attached to the outside.

  As shown in the figure, the metal barrel edges 10 and 10A are screw-fixed to the existing pillars, and the screws are also fixed to the upper and lower horizontal members 64 and 65, thereby joining a plurality of members constituting the existing shaft structure. The strength can be reinforced through the metal barrel edge, and the metal barrel edge itself can be firmly fixed to the existing structural member.

  FIGS. 7 to 9 are front views showing other embodiments in which the specifications of the diagonal materials and the mounting manner thereof are different. As in the embodiment of FIG. It is the figure which enabled it to visually recognize. In the embodiment of FIG. 7, a metal horizontal member 70 is installed near the center of the metal barrel edge, and two diagonal members 40, 40 are respectively provided between the metal barrel edge 10 and the metal barrel edge 10A at the upper and lower sides thereof. It is the form installed in.

  On the other hand, the embodiment shown in FIG. 8 shows an outer wall reforming structure when an oblique member 40A made of a round bar and a turnbuckle is used. Except for the specification of the oblique member, the embodiment shown in FIG. It has the same configuration. FIG. 9 also shows an embodiment in which an oblique member 40A made of a round bar and a turnbuckle is used, and its configuration is an aspect in which the horizontal member is removed from the embodiment of FIG. In addition, as a turnbuckle to be used, a pipe type PS turnbuckle and the like can be mentioned.

  The diagonal material used is not limited to the flat steel, round bar, and turnbuckle described above, and an appropriate member is selected as long as it is a long member made of a material having a desired tensile strength. be able to. Although illustration is omitted, when diagonal members are installed via L-shaped angles at joints (joints) between existing columns and existing horizontal members on the foundation, It is also possible to install L-shaped angle members on both sides, fix both L-shaped angles with bolts via metal barrel edges, and fix the L-shaped angles to both the existing pillar and the existing horizontal member.

  Moreover, FIG. 10 is the figure which showed typically the installation aspect of other diagonal materials. In FIG. 10a, a horizontal member is installed near the center of the metal barrel edge, and one diagonal member 40A is stretched between the metal barrel edges 10 and 10 at both ends above, and two below the horizontal member. This is a simulation of an outer wall reforming structure in which the diagonal members 40A, 40A are crossed between the metal trunk edges 10, 10 at both ends.

  FIG. 10B simulates an outer wall reforming structure in which one diagonal member 40A is stretched between the metal body edges 10 and 10 at both ends. Further, FIG. 10c relates to a reforming structure of an existing wall having an opening W such as a window, and two diagonal members 40A and 40A are installed in an intersecting posture above and below the openings W and W, respectively.

  As described above, the installation mode of the diagonal member can be set in various ways, and an optimum form may be selected in consideration of workability, construction cost, and required earthquake resistance performance.

  Next, based on the flowchart of FIG. 11, the construction method of the outer wall for renovation of this invention is outlined below.

  First, when installing the metal trunk edge on the existing wall, in order to determine the degree of deterioration of the existing column and the existing horizontal member to which the existing wall is attached, the pulling strength measurement of the existing member is performed (step S1). . This measuring method can be performed using the measuring tool 100 shown in FIG. The measuring tool 100 includes an attachment member 103 that comes into contact with the surface of the crosspiece 201 fixed to the crosspiece 200 that is temporarily fixed to the outer surface of the existing wall 60, a breaking member 101 that communicates with the attachment member 103, and a breaking member 101. And a steel rod 102 communicating with the. A screw 90 for fixing the metal barrel edge to the existing column or the like is fixed to the existing column 63 through a through hole (not shown) drilled in the mounting member 103, and in this state, the steel rod 102 is pulled out by the bar B. Here, the rupture portion X of the rupture member 101 is set to be ruptured with a predetermined tensile force. If the rupture portion X breaks before the screw 90 is pulled out, the existing pillar 63 and the screw 90, it can be determined that there is a predetermined pulling strength.

  Returning to FIG. 11, it is determined whether or not the pulling strength is equal to or greater than the allowable value in the next step S <b> 2. If the pulling strength does not satisfy the allowable value, the screws such as the existing column and the existing horizontal member are fixed. It is necessary to remove existing structural members and assemble new materials (step S3).

  On the other hand, if the pull-out strength satisfies the allowable value, the process proceeds to the next step S4, and the metal body edge is installed along the existing pillar. When fixing the metal body edge with screws, the positions of main bars, hoop bars, etc. in the existing column are specified by X-ray photography, etc., and the screws are driven into positions that avoid such bar positions. preferable.

  Next, after installing one or two or more diagonal members on the metal barrel edge in an appropriate manner (step S5), an outer wall plate for reforming with an appropriate specification is installed outside the metal barrel edge (step S6).

  According to the method for constructing the outer wall for reforming of the present invention, it is possible to construct the outer wall for reforming for seismic reinforcement after confirming the degree of deterioration of the existing pillar or the existing horizontal member to which the metal body edge is fixed. Therefore, it is possible to more accurately specify the seismic performance of an existing building that has been renovated. In addition, by grasping the degree of deterioration of existing pillars and existing horizontal members, it is possible to minimize the removal of such members and minimize the generation of waste materials. .

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

The perspective view of one Embodiment of the metal trunk edge used for the outer wall reforming structure by this invention. The perspective view of other embodiment of the metal trunk edge used for the outer wall reforming structure by this invention. The perspective view which showed the state which fastened the metal fitting and diagonal material to the existing wall to the metal trunk edge shown in FIG. IV-IV arrow line view of FIG. Sectional drawing which showed one Embodiment of the outer wall reforming structure of this invention. The front view of FIG. The front view which showed other embodiment of the outer wall reforming structure of this invention. The front view which showed other embodiment of the outer wall reforming structure of this invention. The front view which showed other embodiment of the outer wall reforming structure of this invention. (A)-(c) is the schematic diagram which showed other embodiment of the outer wall reforming structure of this invention. The flowchart of the construction method of the outer wall for reform of this invention. The figure explaining the condition which is measuring the tensile strength of the existing pillar and a fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,10A ... Metal trunk edge, 11 ... Board | substrate part, 12 ... Connection part, 12a ... Horizontally long hole, 12b ... Notch, 13 ... Front plate part, 20, 20A, 20B ... Fastening metal fitting, 30 ... Outer wall board for reform , 40, 40A ... diagonal material, 50 ... L-shaped angle, 60 ... existing wall, 61 ... mortar layer, 62 ... exterior material, 63 ... existing pillar, 64, 65 ... horizontal member, 100 ... measuring tool, 101 ... fracture Member, 102 ... Steel rod, 103 ... Mounting member

Claims (8)

An outer wall reforming structure in which at least two trunk edges extending in the vertical direction are fixed to an existing wall, and an outer wall plate for reforming is fixed to the trunk edges,
The furring strip is molded in a metal material, and a substrate portion to be fixed to the existing wall, a front plate portion, wherein the wall panels extending parallel to the base plate portion is fixed, and the substrate portion are composed of a connecting portion for connecting the said front plate portion,
The furring strip, at least in a partial region of the substrate portion is not present front plate portion opposed to said part of the area, by inserting the fixture from the surface side, the substrate portion the a shape that can be fixed to the existing wall,
In the connecting portion of the trunk edge , a plurality of horizontally long holes are formed at regular intervals over the longitudinal direction ,
The two furring strip, in a state in which the diagonal members are passed over, being fixed to the existing wall by inserting a fastener into the substrate portion,
The diagonal members are horizontally long hole of each of the furring strip, through a mounting member are connected to each other by bolts,
The mounting member is an L-shaped angle steel material including a perforated rising portion connected to the connecting portion of the trunk edge and a perforated flat plate portion orthogonal to the perforated rising portion,
The perforated flat plate portion of the mounting member and the diagonal member are connected by bolts,
An outer wall reforming structure , wherein a perforated rising portion of the mounting member and a laterally long hole of the trunk edge are connected by a bolt . The end portion of the front Kihasuzai A hole is provided for the bolt to pass through, by holes in the ends of the hole and the diagonal members of said plate is connected by bolts positioned orientation , the outer wall remodeling structure according to claim 1, wherein the furring strip and the said diagonal members are indirectly connected. The outer wall reforming structure according to claim 1 or 2,
Between the opposing the two furring strips are provided second cylinder edges, the connecting portion of the second furring strip, the notch for the passage of the slant member is formed outer wall remodeling construction, characterized in that said slant member is stretched between the two cylinder edge at swiped posture outs Ri該切.   The outer wall reforming structure according to any one of claims 1 to 3, wherein the diagonal member is formed of a member including a flat plate or a round bar hardware and a turnbuckle. The furring strip is attached on the first floor of the existing building wall, said cylinder rim is connected via the existing wall existing Columns the existing wall is attached, said cylinder edge of the end portion the outer wall remodeling structure according to any one of claims 1 to 4, characterized in that it is connected to the horizontal member for an existing foundation, both existing horizontal members constituting the first floor ceiling. The furring strip is attached to an existing wall of the second floor or more layers of the building, said cylinder rim is connected via the existing wall existing Columns the existing wall is attached, said cylinder edge end, a horizontal member of the floor of the hierarchy, the outer wall according to any one of claims 1 to 5, characterized in that it is Connect to both the horizontal member for ceiling hierarchical layer Reform structure. A method for constructing an outer wall for reforming by attaching an outer wall plate for reforming to the outside of an existing wall,
A first step of measuring the pullout strength of an existing column or an existing horizontal member to which the existing wall is attached, and determining whether the pullout strength satisfies an allowable value;
If the pullout strength is satisfied the allowable value, and the substrate portion, and a front plate portion which wall panels which is parallel to the substrate portion is fixed, and a connecting portion for connecting the said substrate portion and said front plate portion consists, not present the plate portion before facing at least part of the area of the substrate section, and to the connecting portion, in the longitudinal direction, at regular intervals, a plurality of oblong holes a second step of attaching at least the existing pillars metal furring strip comprising over the existing wall includes a
Consisting of a perforated flat plate portion and a perforated rising portion which is perpendicular to the perforated flat plate portion, a mounting member is L-shaped angle steel, with which stretched between a plurality of said metal furring strip, the holes in the end portion having prepared diagonal member, the organic hole rising portion of the hole and horizontally elongated holes of the connecting portion connected with the positioning and while bolts, positioning the organic hole plate portion of the hole and the hole of the end of the diagonal member by connecting with a bolt while, a third step of connecting the said metal furring strip and said diagonal members,
Fourth step and, the construction method of remodeling a outer wall, characterized in that it consists of mounting the external wall plate for remodeling the surface of the front plate portion of the metal furring strips. Wherein in the third step, when the three said metal cylinder edge of with is attached to the existing wall at intervals, said diagonal members are stretched across the metal furring strip, said slant member is through the metal furring strips to the notches provided in the connecting portion to be disposed in the central advance, according to claim 7, characterized in that to bridge across the metal furring strip through the diagonals in the notch Method of exterior wall for renovation.

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