JP2008231765A - Repaired earthquake-resistant external wall, building with repaired earthquake-resistant external wall, and construction method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a repaired earthquake-resistant external wall for a wooden house, which can be simply repaired into an earthquake resistant structure from the external wall side of the building, and to provide a construction method for the repaired earthquake-resistant external wall. <P>SOLUTION: The external wall 50 with earthquake resistance is installed by repairing the external wall of the building 1. A repaired section of the external wall 50, which has an upper edge at a height of 1.5-2.5 m from a ground surface, is provided with a plurality of exterior surface materials 11 which are fixed to columns by laying the at least two columns or studs among the existing columns 7 and 7 or studs 9 of the building, and which are juxtaposed in such a manner as to form an outer peripheral surface of the building in the repaired section. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a modified earthquake-resistant outer wall for modifying an existing wooden house from the outer wall side to obtain an earthquake-resistant structure, a building including the modified earthquake-resistant outer wall, and a construction method.

  In recent years, interest in earthquake countermeasures has increased, and demand for so-called earthquake-resistant buildings has also increased. The application of earthquake-resistant structures to buildings has been improved following the above demand. Especially in a newly built house, various earthquake-resistant structures can be applied to each part at the time of new construction, so that the above demand can be satisfied. However, there is a strong demand for improving the earthquake resistance of existing buildings, and this is done by changing existing buildings to earthquake-resistant structures by renovation and reconstruction.

In the conventional retrofitting to a seismic wall structure, the wall on the indoor side is removed and a load bearing member is attached, or the ceiling and floor are peeled off to provide a brace. Further, Patent Documents 1 to 3 disclose a repaired earthquake-resistant structure that is relatively easy to repair compared to these conventional ones.
Japanese Patent Laid-Open No. 2002-4464 JP 2005-226450 A JP-A-2005-232713

  Any of the above disclosed methods or structures are formed by two horizontal members disposed at a height corresponding to the floor and ceiling of a building and two upright columns. A face material is affixed as a base material to the frame-shaped portion. And it was assumed that the attachment was performed from the indoor side. However, the installation of a large number of large face materials in this way resulted in a correspondingly large renovation, leading to a longer construction period and increased costs.

  Furthermore, in order to perform such renovation from the indoor side, it is necessary to proceed with renovation while changing the room or simultaneously in each room, not limited to one room. Therefore, it has been a problem to give a large burden to residents during the renovation. Specifically, it can be used to move various items of household equipment placed in the room to secure a renovation site, and dust generated by the renovation work. During the renovation work, the resident is away from the house. I could not.

  On the other hand, for repair workers, it is difficult to handle the outer wall from the outside of the room, and there is a situation such as the absence of a retrofitted earthquake resistant outer wall.

  Then, this invention makes it a subject to provide the repaired earthquake-resistant outer wall of the wooden house which can be easily repaired to an earthquake-resistant structure from the outer wall side of a building, the building provided with this improved earthquake-proof outer wall, and its construction method.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

  The invention according to claim 1 is a building (1) an earthquake-resistant outer wall (50) installed by renovating the outer wall, and the refurbished portion has a height of 1.5 to 2.5 m above the ground surface. At the same time, at least two of the existing pillars (7, 7) or the studs (9) of the building are passed and fastened to the pillars or the studs to form the building outer peripheral surface of the repaired part The above-mentioned problems are solved by providing a modified earthquake-resistant outer wall comprising a plurality of exterior face materials (11, 11,...) Arranged in parallel.

  Here, “clamping” means fixing, and is a concept that does not simply include the meaning of “hook”. The same applies hereinafter.

  The invention described in claim 2 is a building (1) an earthquake-resistant outer wall (10) installed by renovating the outer wall, and the refurbished portion has a height of 1.5 to 2.5 m above the ground surface. And the body edges (12, 12,...) That are long members fastened to the existing pillars (7, 7) or the studs (9) of the building, and fastened to the body edges, The problem is solved by a modified seismic outer wall comprising a plurality of exterior face materials (11, 11,...) Arranged in parallel to form a building outer peripheral surface.

  The invention according to claim 3 is that the plurality of exterior face materials (11, 11,...) In the repaired earthquake resistant outer wall (20) according to claim 1 or 2 are at least two adjacent exterior face materials ( 11, 11,...) Are connected by a common connecting member (21).

  The invention according to claim 4 is a long reinforcing member provided along the longitudinal direction of the existing columns (7, 7) in the repaired earthquake resistant outer wall (30) according to any one of claims 1 to 3. (31, 31), one end of the reinforcing member is provided at a position lower than the upper end of the exterior face material (11, 11,...), And the other end is higher than the upper end of the exterior face material. It is arranged at a position.

  In the invention according to claim 5, the exterior face material (11, 11,...) In the repaired earthquake resistant outer wall (40) according to any one of claims 1 to 4 is at least an upper end portion of the exterior face material. It is fixed to the existing column (7, 7) or the inter-column (9) by a further fixing means (43, 43) at one place.

  Invention of Claim 6 solves the said subject by providing the repair building (1) by which the earthquake-resistant performance was improved by providing the repair earthquake-proof outer wall as described in any one of Claims 1-5. .

  Invention of Claim 7 is the construction method of the outer wall which improves a building outer wall and improves earthquake resistance by constructing | repairing an earthquake-resistant outer wall, Comprising: The existing outer wall is 1.5-2.5m from the ground surface A step of removing the height of the upper end of the building, and a step of fastening a plurality of exterior face materials arranged in parallel so as to form the outer peripheral surface of the building to be repaired on an existing column or inter-column of the building. The problem is solved by providing a construction method.

  Invention of Claim 8 is the construction method of the outer wall which renovates a building outer wall and improves earthquake resistance by constructing | repairing an earthquake-resistant outer wall, Comprising: The existing outer wall is 1.5-2.5m from the ground surface The process of removing with the height of the upper end as the upper end, the process of fastening the trunk edge, which is a long member, to the existing pillar or inter-column of the building, and a plurality of parallel arrangements so as to form the building outer peripheral surface of the repaired part on the trunk edge The above-mentioned problems are solved by providing a method for constructing a repaired earthquake-resistant outer wall including a step of fastening the exterior face material.

  ADVANTAGE OF THE INVENTION According to this invention, since it was difficult to handle an outer wall conventionally, the improvement to the earthquake-resistant wall performed from the indoor side can be performed from the outdoor side. As a result, both the resident and the contractor can proceed with their work in parallel, which improves convenience.

  In addition, it is not necessary to renovate the entire outer wall, and sufficient seismic retrofitting can be carried out within the reach of the worker standing on the ground or within the reach of the stepping platform. It is also possible to reduce costs and prevent inconvenience to the neighborhood. Furthermore, it is possible to confirm the decay status of pillars and the like at this time, and appropriate seismic reinforcement can be performed.

  In addition, earthquake resistance can be improved without using the conventionally required seismic surface material, and it doubles as a load-bearing wall and finish exterior, reducing the number of parts, ordering, transportation and construction. It is possible to provide an improved seismic outer wall that is highly convenient.

  Such an operation and gain of the present invention will be made clear from the best mode for carrying out the invention described below.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings.

  FIG. 1 is a perspective view schematically showing a wooden building 1 provided with modified earthquake-resistant outer walls 10 and 10 according to the present invention. Building 1 is a two-story house, and windows 4, 4, and 5 are provided on the first floor, and windows 3 are provided on the second floor. Further, the wall forming the exterior has the existing walls 2 and 2 that have not been repaired, and the repaired seismic outer walls 10 and 10 of the present invention indicated by hatching in FIG. The exterior of the existing outer walls 2 and 2 is formed of mortar. In FIG. 1, beams 6 and 6 which are arranged on the inner side of the existing outer walls 2 and 2 and form a boundary between the first floor and the second floor are shown by broken lines. Therefore, the lower part of the beams 6 and 6 is the first floor part, and the upper part of the beams 6 and 6 is the second floor part. As can be seen, the modified seismic outer walls 10 and 10 according to the present invention are modified outer walls that are formed halfway in the height direction of the first floor portion and have earthquake resistance that does not reach the upper portion of the first floor portion. . Specifically, it is preferable that the upper ends of the repaired earthquake resistant outer walls 10 and 10 shown by B in FIG. 1 have a height of 1.5 to 2.5 m from the ground surface. As a result, incidental work such as building a scaffold during refurbishment can be omitted, thereby reducing the number of man-hours and costs. In addition, it is possible to work in a narrow place, and the influence on the neighborhood can be reduced.

  This will be described in more detail below. FIG. 2 is an enlarged view of the portion indicated by A in FIG. 1, and a part thereof is broken to show the inside of the wall. FIG. 3 is a vertical section. In FIG. 3, the left side of the drawing shows the outdoor side, and the right side of the drawing shows the indoor side. The modified earthquake-resistant outer wall 10 of the present invention includes sidings 11, 11,..., Trunk edges 12, 12,. First, each component will be described, and then the arrangement of these members will be described.

  The sidings 11, 11,... Are exterior face materials, and are rectangular plate-like members having a predetermined size arranged on the outside of the wall. The outdoor side surfaces of the sidings 11, 11,... Are provided with patterns and colors, which are so-called design surfaces and have an exterior role. The type of siding used in the present invention is not particularly limited, and any siding that can be normally used can be used. Examples thereof include ceramic siding, ceramic siding, and metal siding depending on the material. As these sidings, those having high mechanical strength and those having good workability such as light weight can be preferably used. Regarding the mechanical strength, it is preferable that the bending strength is 690 N or more as defined in JIS A5422.

  Although siding forms a building exterior, a slight finishing process may be applied to the outdoor side. This can further improve the design of the building.

  The trunk edges 12, 12,... Are a plurality of bars longer than those between the columns 7, 7, and are the same as the trunk edges used in ordinary buildings. The material is preferably hard to break in the fiber direction, and examples thereof include plywood, OSB (oriented strand board), and LVL (Laminated Veneer Lumber).

  The waterproof sheet 13 is a sheet that protects the indoor side from moisture on the outdoor side, and is not particularly limited as long as it has such a purpose. Among them, a moisture permeable waterproof sheet is preferable, and a sheet that can permeate moisture from the indoor side to the outdoor side, but blocks rainwater from the outdoor side can be given.

  The drainers 14 and 15 are long members having a crank-shaped cross section. Although the material of the drainers 14 and 15 is not specifically limited, It is preferable that they are metals, such as steel, aluminum, and stainless steel.

  Next, the arrangement of the constituent members will be described. The body edges 12, 12,... Are horizontally fixed to the outdoor sides of the columns 7, 7 and the intermediate pillar 9 so as to pass the existing columns 7, 7 and the intermediate pillar 9 provided in the building 1. Although the method of attaching the trunk edges 12, 12,... To the columns 7, 7 and the inter-columns 9 is not particularly limited, a preferable fixing method is screwing. Further, the plurality of trunk edges 12, 12,... Arranged in parallel in the length direction of the columns 7, 7 at a predetermined interval. The trunk edge 12 arranged at the bottom is substantially at the same position as the beam 8 arranged in a portion corresponding to the existing first floor. Further, the uppermost trunk edge 12 is substantially at the same position as the upper end of the improved seismic outer wall 10.

  In this embodiment, the trunk edges 12, 12,... Are arranged horizontally in parallel so as to pass between the columns 7, 7. However, the present invention is not limited to this. For example, as shown in a modified example in FIG. 4A, two trunk edges 12a and 12a are disposed horizontally across the columns 7 and 7 with a predetermined interval, and the columns 7, 7 and three trunk edges 12 a ′, 12 a ′, 12 a ′ arranged in the pillars 7, 7 and the stud 9 along the longitudinal direction of the stud 9 may be formed in a rectangular frame shape. Further, as shown in FIG. 4B, a further modification example, two trunk edges 12b and 12b that are horizontally disposed across the columns 7 and 7 and the intermediate column 9 with a predetermined interval; It may be formed by juxtaposed trunk edges 12b ′, 12b ′,... Provided vertically extending between the trunk edges 12b, 12b. Which body edge configuration is used is appropriately selected depending on the type of exterior face material to be constructed, the form of the pillar of the building to be constructed, and the like.

  The waterproof sheet 13 is attached to the pillars 7 and 7 by staples, tuckers, nails, tapes, adhesives, or the like.

  The sidings 11, 11,... Are arranged with their outer peripheral ends fixed to the trunk edges 12, 12,. In the modified seismic outer wall 10 according to the present invention, the plurality of rectangular sidings 11, 11,... As a result, not only the sidings 11, 11,... Are exterior materials, but also the earthquake resistance of existing houses can be greatly improved, and a seismic wall can be obtained. In addition, since it also serves as an exterior material, there is no difficulty in handling the exterior, and it has become possible to make an earthquake-proof repair from the outside.

  The drainers 14 and 15 are made horizontal along the upper and lower ends of the parallel sidings 11, 11,. The fixing method is not particularly limited, but screws and nails can be used. As shown in FIG. 3, the drainers 14 and 15 are arranged such that one end of the crank-shaped cross section is disposed on the indoor side from the siding 11, 11... And the other end is disposed on the outdoor side from the siding 11, 11. . As a result, water such as rain water that has traveled through the indoor side of the siding 11, 11,... Can be appropriately discharged to the outside.

  The seismic retrofit wall 10 of the present invention has the above-described effects due to the above-described components and the arrangement thereof. The improvement in seismic performance will be described later, but a “wall strength magnification” of 2.4 kN / m or more can be obtained. This is equivalent to a so-called predetermined bracing wall strength magnification. Here, “wall strength magnification” is a numerical value used for structural calculation at the time of seismic retrofit, and is a value specified in “Aseismic Diagnosis and Reinforcement Method for Wooden Houses” by the Japan Building Disaster Prevention Association, kN / m This is used to calculate the strength of the wall, and the larger the value, the greater the strength of the wall. The actual calculation method and evaluation of the calculation results will be described later.

  FIG. 5 shows a modified earthquake resistant outer wall 10 ′ as another example of the modified earthquake resistant outer wall 10 of the first embodiment. The modified seismic outer wall 10 ′ is different from the modified seismic outer wall 10 in that the sidings 11 ′, 11 ′,... Are horizontally aligned in the vertical direction. In this way, the sidings 11 ', 11', ... may be horizontal.

  FIG. 6 is a view for explaining a modified seismic outer wall 20 of the present invention according to the second embodiment. For easy understanding, the same reference numerals as those of the repaired earthquake resistant outer wall 10 are assigned to the members to which the description of the repaired earthquake resistant outer wall 10 of the first embodiment corresponds as it is. FIG. 6 is a partial front view of the building 1 as viewed from the outside, focusing on the inside of the outer wall, and the sidings 11, 11,... Further, the exterior material (mortar) 2a of the existing outer wall 2 is omitted.

  The repaired earthquake resistant outer wall 20 includes a connecting member 21 in addition to the repaired earthquake resistant outer wall 10. FIG. 7 shows a vertical sectional view focusing on the portion where the connecting member 21 is attached. As shown in FIGS. 6 and 7, the connecting member 21 is a long member having a substantially crank-shaped cross section, and is horizontally disposed so as to cross the upper ends of the sidings 11, 11. At this time, as shown in FIG. 7, the one piece 21b in the crank-shaped cross section of the connecting member 21 and the siding 11 are fixed by a fixing member 23 such as a screw, and the other piece 21a in the crank-shaped cross section of the connecting member 21 and the existing piece 21a. The columns 7 and 7 are fixed with screws or the like.

  Here, the connection member 21 and the siding 11, 11,... May be fixed by two or more selected from the plurality of sidings 11, 11,. However, in order to provide higher seismic strength, it is preferable that the connecting member 21 and the sidings 11, 11,. The ends of the plurality of sidings 11, 11,... Are connected by the connecting member 21 described above. Thereby, deformation of siding can be suppressed against horizontal external force (rolling) during an earthquake, and the seismic strength can be further improved.

  Further, as can be seen from FIG. 7, the connecting member 21 has a cross section similar to the drainer 14 shown in FIG. Accordingly, the connecting member 21 can also serve as a drainer, and since it is not necessary to dispose a drainer in this portion, the number of members used can be reduced.

  FIG. 8 shows a modified earthquake-resistant outer wall 20 ′ that is a modified example of the second embodiment corresponding to the modified earthquake-resistant outer wall 10 ′ that is the modified example shown in FIG. 5. In the modified earthquake-resistant outer wall 20 ', both side ends of the sidings 11', 11 ', ... are connected by connecting members 21', 21 '.

  FIG. 9 is a view for explaining the seismic retrofit wall 30 of the present invention according to the third embodiment. For easy understanding, the same reference numerals as those of the earthquake-resistant repair wall 10 are assigned to the members to which the description of the earthquake-proof repair wall 10 of the first embodiment corresponds as it is. In FIG. 9, the sidings 11, 11,... Are transparently indicated by broken lines in a partial front view as seen from the outdoor side focusing on the inside of the outer wall of the building 1. Further, the exterior material (mortar) 2a of the existing outer wall 2 is omitted.

  The repaired earthquake-resistant outer wall 30 includes reinforcing members 31 and 31 in addition to the repaired earthquake-resistant outer wall 10. The reinforcing members 31 and 31 are long members, and are fixed by fixing members such as screws along the longitudinal direction of the existing columns 7 and 7 of the building 1. At this time, one end of the reinforcing members 31, 31 is provided at a position lower than the upper ends of the sidings 11, 11, ..., and the other end is arranged at a position higher than the upper ends of the sidings 11, 11, .... The The protruding length from the upper end of the siding 11, 11,... On the other end side is not particularly limited, but the protruding length is preferably 100 mm or more. Moreover, although the full length of the reinforcement members 31 and 31 is not specifically limited, It is preferable that it is 300 mm or more.

  By providing the reinforcing members 31, 31, it is possible to suppress deformation of the pillars on the wall surface due to a horizontal external force (rolling) during an earthquake.

  FIG. 10 is a view for explaining a seismic retrofit wall 40 of the present invention according to the fourth embodiment. For easy understanding, the same reference numerals as those of the earthquake-resistant repair wall 10 are assigned to the members to which the description of the earthquake-proof repair wall 10 of the first embodiment corresponds as it is. In FIG. 10, the sidings 11, 11,... Are transparently indicated by broken lines in a partial front view as seen from the outdoor side, focusing on the inside of the outer wall of the building 1. Moreover, the exterior material (mortar) 2a of the existing wall 2 is omitted.

  The repaired earthquake-resistant outer wall 40 includes a connecting member 41, reinforcing members 42 and 42, and corner members 43 and 43 as fixing means, in addition to the repaired earthquake-resistant outer wall 10. The connecting member 41 is the same member as the connecting member 21 provided in the above-described improved earthquake-resistant outer wall 20. Further, the reinforcing members 42 and 42 are the same members as the reinforcing members 31 and 31 provided in the above-described modified earthquake-resistant outer wall 30. Therefore, the description of the connecting member 21 and the reinforcing members 31 and 31 corresponds to the connecting member 41 and the reinforcing members 42 and 42, and thus the description thereof is omitted here.

  The entering corner members 43, 43 are plate members having a right triangle. The entering corner members 43 and 43 are arranged by fixing two sides sandwiching a right angle among the three sides of a right triangle to the connecting member 41 and the reinforcing members 42 and 42, respectively. Therefore, one connecting member 41 and two reinforcing members 42 and 42 are connected by the corner members 43 and 43. Thereby, the deformation | transformation with respect to the vibration of the repaired earthquake-resistant outer wall 40 can be further suppressed, and the seismic performance is improved.

  The means for fixing the corner members 43, 43 to the connecting member 41 and the reinforcing members 42, 42 are not particularly limited. This can include, for example, fixing by welding. Further, screws, bolts and nuts may be used for easier fixing.

  In this embodiment, the two sides of the corner members 43 and 43 are attached to the connecting member 41 and the reinforcing members 42 and 42, but the present invention is not limited to this. For example, the corner members 43 and 43 may be directly attached to the siding, the trunk edge and the pillar without including the connecting member 41 and the reinforcing members 42 and 42.

  FIG. 11 shows a modified seismic outer wall 40 ′ that is a modification of the modified seismic outer wall 40. The repaired earthquake resistant outer wall 40 ′ fixes the connecting member 41 and the reinforcing members 42, 42 without using the corner member 43 provided on the modified earthquake resistant outer wall 40. Specifically, the connecting member 41 and the reinforcing members 42 and 42 are fixed by welding (welded portion 44 ′). Also by this, the one connecting member 41 and the two reinforcing members 42 and 42 are appropriately connected. Therefore, the deformation | transformation with respect to a shake can be suppressed and seismic performance improves.

  In this modification, the connecting member 41 and the reinforcing members 42 and 42 are fixed by welding, but the fixing means is not particularly limited. Screws, bolts and nuts may be used for simple fixing. However, at this time, it is necessary to fix with at least two screws or two or more sets of bolts and nuts.

  In each of the embodiments described above, the siding is fixed to a trunk edge attached to a pillar or a stud. As a further embodiment, the modified seismic outer wall of the present invention can be configured by directly fixing the siding to a column or a stud without providing a trunk edge. FIG. 12 shows a modified seismic outer wall 50 according to the fifth embodiment of the present invention. This is a view corresponding to the modified seismic outer wall 10 of the first embodiment. Here, the same reference numerals are given to members having the same configuration as the modified earthquake-resistant outer wall 10.

  As can be seen from FIG. 12, the modified seismic outer wall 50 is not provided with a trunk edge, and the sidings 51, 51 are directly fixed to the columns 7, 7 and the intermediate column 9. Also by this, it can be set as the repaired earthquake-proof outer wall of this invention, and there can exist the effect.

  According to the modified earthquake-resistant outer wall of the present invention as described above, since the conventional handling of the outer wall has been difficult, the modification to the earthquake-resistant wall that has been performed from the indoor side can be performed from the outdoor side. Thereby, since both a resident and a contractor can proceed with their work in parallel, convenience is improved.

  In addition, the retrofit seismic outer wall of the present invention shall be sufficiently seismic retrofitted within the reach of a worker standing on the ground without repairing all of the outer wall side, or a worker on a platform with a low level of stepping platform. It is possible to reduce not only the construction safety but also the man-hours and costs, and the inconvenience to the neighborhood.

  Furthermore, since the improved seismic outer wall of the present invention does not require the conventionally required seismic surface material, it is possible to reduce the number of members and to omit ordering, transportation, and construction, which is also highly convenient. Renovated seismic outer walls can be provided.

  These also had an effect on the construction method, and it became possible to construct a modified seismic outer wall more easily. The construction method of the repaired earthquake resistant outer wall according to one embodiment will be described below.

  The repaired earthquake resistant outer wall construction method S0 includes an existing outer wall removal step S1, a waterproof sheet attachment step S2, a draining attachment step S3, a trunk edge attachment step S4, and a siding attachment step S5. The removal process S1 of the existing outer wall is a process of removing mortar and cross members that are conventional existing outer walls. At this time, as described above, the part of the existing outer wall to be removed may be halfway in the height direction of the first floor part. Therefore, it is not necessary to assemble a scaffold and the work can be advanced quickly. In addition, since it is not necessary to work at a high place, it is possible to improve work safety and reduce the influence on the neighborhood.

  The waterproof sheet attaching step S2 is an attaching step of the waterproof sheet to the portion that appears by removing the existing outer wall. Moreover, draining attachment process S3 is a process of attaching a draining to the existing pillar.

  The trunk edge attaching step S4 is a step for attaching the trunk edge, and the siding attaching step S5 is a step for attaching the siding to the above-described arrangement.

  As can be seen from the above, the modified seismic outer wall construction method S0 of the present invention does not require the installation of a scaffold or the installation of a load bearing surface. Thereby, the effect mentioned above can be produced.

  Further, in the modified seismic outer wall 50 according to the fifth embodiment described above, the step of attaching the trunk edge is not required, so the trunk edge attaching step S4 can be omitted.

  This will be described in more detail in the following examples. However, the present invention is not limited to the examples. This example was carried out in accordance with the test method described in the “Method for testing and evaluating work of wooden bearing walls and their magnification” issued by the Building Materials Testing Center. The main conditions are as follows.

<Specifications>
The test was performed on four specifications of Example 1 to Example 4. The main specifications are described below. FIG. 14 shows an outline of the common specifications.
(Common specifications)
・ Upper beam: Cross section 105mm x 180mm, length 2730mm
・ Lower beam: Cross section 105mm x 105mm, length 2730mm
・ Space between upper beam and lower beam: 2594mm
Column: cross section 105mm x 105mm, length 2594mm
・ Space pillar: Cross section 30mm x 105mm, length 2594mm
・ Space between pillars and studs 455mm
Table 1 shows the specifications of siding in Examples 1 to 4.

  In Table 1, “placement” is expressed by which direction the longitudinal direction of the siding is arranged. That is, “vertical” means that the longitudinal direction of the siding is arranged in the vertical direction. Moreover, the connecting member was steel with a thickness of 2.3 mm, and all the sidings were connected by one connecting member. The reinforcing member was a long steel member having a length of 450 mm and a thickness of 3.2 mm and an L-shaped cross section. The corner member was a steel triangular plate with a thickness of 3.2 mm, each having two sides sandwiching the right angle portion of 135 mm.

<Conditions>
As described above, the experiment was performed in accordance with the test method described in the “Testing and Evaluation Work Method for Wooden Bearing Wall and Its Magnification” issued by the Building Materials Testing Center.

<Evaluation>
The evaluation was performed by obtaining “wall strength magnification”. The “wall strength magnification” is also the four strengths (yield strength Py, ultimate strength Pu, maximum strength Pmax, etc.) used in the wall magnification evaluation described in the “Wooden bearing wall and test and evaluation work method for the magnification”. It was obtained by using the ultimate yield strength Pu among the yield strength at the time of specific deformation. Specifically, 0.2 × (2 μ−1) ^1/2 × Pu was calculated using Pu obtained in the experiment, and a value obtained by dividing this by the width of the test specimen was defined as “wall strength magnification”. . Here, “μ” represents a plasticity ratio and is a value obtained from the relationship between the shear deformation angle and the load in the above experiment.
Furthermore, it was compared with the wall strength magnification in the general construction method described in “Aseismic Diagnosis and Reinforcement Method for Wooden Houses” of the Japan Building Disaster Prevention Association. Examples of typical wall strength magnifications are shown in Table 2.

<Result>
The results are shown in Table 3.

  As can be seen from Table 3, the improved seismic outer wall of the present invention can obtain a wall strength magnification equal to or greater than a predetermined bracing. As a result, it is possible to repair the wall having earthquake resistance while achieving the effects such as reduction of the man-hours and convenience for the resident.

  Although the present invention has been described in connection with the most practical and preferred embodiments at the present time, the present invention is not limited to the embodiments disclosed herein, The invention can be changed as appropriate without departing from the scope or spirit of the invention that can be read from the claims and the entire specification, and a modified earthquake-resistant outer wall, a building including the modified earthquake-resistant outer wall, and a method of construction are also included in the present invention. It should be understood as encompassed within the technical scope.

It is an external appearance perspective view of the house provided with the repaired earthquake-proof outer wall of the present invention concerning a first embodiment. It is the external appearance front view of the part of the repaired earthquake-proof outer wall shown by A in FIG. FIG. 3 is a vertical sectional view of the repaired earthquake resistant outer wall shown in FIG. 2. It is a figure explaining the modification of arrangement | positioning of a trunk edge. It is a figure for demonstrating the modification of the improvement earthquake-proof outer wall of 1st embodiment. It is a figure which shows the repairing earthquake-proof outer wall of this invention concerning 2nd embodiment. It is a figure for demonstrating arrangement | positioning of a connection member. It is a figure for demonstrating the modification of the improvement earthquake-proof outer wall of 2nd embodiment. It is a figure which shows the repairing earthquake-proof outer wall of this invention concerning 3rd embodiment. It is a figure which shows the repairing earthquake-proof outer wall of this invention concerning 4th embodiment. It is a figure for demonstrating the modification of the improvement earthquake-proof outer wall of 4th embodiment. It is a figure which shows the repairing earthquake-proof outer wall of this invention concerning 5th embodiment. It is a flowchart of the construction method of the repaired earthquake-proof outer wall concerning one example of this invention. It is a figure for demonstrating the main specifications of an Example.

Explanation of symbols

1 Building 2 Existing exterior 3, 4, 5 Window 6 Beam (upper beam)
7 Existing pillar 8 Beam (lower beam)
9 Pillars 10 Renovated earthquake resistant outer wall 11 Siding (exterior material)
DESCRIPTION OF SYMBOLS 12 Trunk edge 13 Waterproof sheet 14,15 Draining 20 Renovation earthquake-resistant outer wall 21 Connecting member 30 Renovation earthquake-resistant outer wall 31 Reinforcement member 40 Renovation earthquake-resistant outer wall 41 Connection member 42 Reinforcement member 43 Corner member (fixing means)
50 Renovated earthquake resistant outer wall

Claims (8)

A seismic outer wall installed by renovating the building outer wall,
The refurbishment part has a height of 1.5-2.5m from the ground surface as the upper end,
A plurality of exterior face materials that are fastened to the pillars or the inter-columns by passing at least two pillars or the inter-columns among the existing pillars or the inter-columns of the building and arranged in parallel so as to form the building outer peripheral surface of the repaired part. Renovated earthquake-resistant outer wall. A seismic outer wall installed by renovating the building outer wall,
The refurbishment part has a height of 1.5-2.5m from the ground surface as the upper end,
A trunk edge which is a long member fastened to an existing pillar or a stud of the building;
A repaired earthquake-resistant outer wall comprising: a plurality of exterior face materials that are fastened to the trunk edge and arranged in parallel so as to form a building outer peripheral surface of the repaired part.   The repaired earthquake-resistant outer wall according to claim 1 or 2, wherein the plurality of exterior face materials are connected by one connecting member in which at least two adjacent exterior face materials are in common.   A long reinforcing member provided along the longitudinal direction of the existing pillar, wherein one end of the reinforcing member is provided at a position lower than the upper end of the exterior face material, and the other end is The improved earthquake resistant outer wall according to any one of claims 1 to 3, wherein the improved earthquake resistant outer wall is disposed at a position higher than an upper end of the exterior face material.   The said exterior face material is being fixed to the said existing pillar or an interposition column by the further fixing means in at least one location of the upper end part of this exterior face material. Renovated earthquake-resistant outer wall.   A renovated building having improved seismic performance by including the renovated seismic outer wall according to claim 1. A construction method of the outer wall that improves the earthquake resistance by renovating the building outer wall by constructing the repaired earthquake resistant outer wall,
Removing the existing outer wall from the ground surface with a height of 1.5 to 2.5 m as the upper end;
A method of constructing a repaired earthquake-resistant outer wall, comprising: fastening a plurality of exterior face materials arranged in parallel so as to form a building outer peripheral surface of a repaired part on an existing pillar or a stud of the building. A construction method of the outer wall that improves the earthquake resistance by renovating the building outer wall by constructing the repaired earthquake resistant outer wall,
Removing the existing outer wall from the ground surface with a height of 1.5 to 2.5 m as the upper end;
A step of fastening a trunk edge, which is a long member, to an existing pillar or a stud of the building;
Fixing a plurality of exterior face materials arranged in parallel so as to form a building outer peripheral surface of a repaired portion on the trunk edge, and a method for constructing a repaired earthquake resistant outer wall.

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