Endurance Wall

Abstract

To provide a bearing wall having greater strength.SOLUTION: Provided is a bearing wall including a frame 9 formed by assembling two vertical frame members 12 having a plurality of horizontal binding holes 17 and two horizontal frame members 22 into a rectangle. The vertical frame member 12 has an abutment portion 21 protruding outward to a position where a first horizontal binding hole 18, located at the lowest and highest among the plurality of horizontal binding holes 17, is provided. The frame 9 is arranged so that the abutment portion 21 abuts on a fixed vertical member 5, 57 having a plurality of fixing holes 58. A spacer 40 having a through hole 41 is arranged between the vertical frame member 12 and the fixed vertical member 5, 57 so that the through hole 41 overlaps with a second horizontal binding hole 19 located next below and above the first horizontal binding hole 18 among the plurality of horizontal binding holes 17 of the vertical frame member 12, and is fixed to the fixed vertical member 5, 57 with fasteners 69, 70 inserted into the horizontal binding holes 17 and the fixing holes 58.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a bearing wall that is arranged as part of the walls of a building and is intended to increase the strength of the bearing wall. [Background technology]

[0002] Recently, renovations of existing buildings have become popular, with some customers requesting the creation of new openings such as large windows in walls or the removal of interior partition walls to expand existing interior spaces. However, if the wall in which the opening is to be created or removed is a load-bearing wall, the strength provided by the load-bearing wall must be compensated for elsewhere, and depending on the structure of the building, there may be restrictions on the above-mentioned renovations, making it difficult to fully meet the customer's requests.

[0003] Therefore, even if the wall in which a new opening is to be created or the wall to be removed is a load-bearing wall, it is possible to compensate for the strength provided by the wall in which the new opening is to be created or the wall to be removed by improving the strength of other existing load-bearing walls, thereby fully responding to customer requests without being restricted by the structure of the building.

[0004] Conventionally, as described in Patent Document 1, a technology for improving the strength of shear walls is known, which has a shear wall structure in which a beam is placed horizontally across the upper ends of a pair of spaced apart columns whose base ends are fixed on a foundation to form a rectangular wall frame, and each side of a rectangular panel is fixed to this wall frame with a plurality of nails.A plurality of fixing holes are drilled in the longitudinal direction of a metal band plate to form a reinforcing plate, and the pair of reinforcing plates are overlapped on at least a portion of the longitudinal direction of two parallel sides of the panel, over at least a portion of the nail heads, and fixed with wood screws that are inserted into the fixing holes, penetrate the panel, and reach the columns, thereby improving the strength of existing shear walls. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-231889 Summary of the Invention [Problem to be solved by the invention]

[0006] However, the structure of the shear wall described in Patent Document 1 involves fixing a reinforcing plate on top of a surface material, which increases the thickness of the shear wall due to the reinforcement. Therefore, if this structure of the shear wall is applied to an existing shear wall, adjustments will be necessary to fit the interior of the wall, including walls other than the shear wall in question.

[0007] The present invention has been made in consideration of the above circumstances, and aims to provide a bearing wall that can be easily adapted to existing bearing walls without requiring adjustment or processing of other existing walls, and that can improve their strength. [Means for solving the problem]

[0008] In order to solve the above problems, the bearing wall according to the present invention is a bearing wall having a frame formed by assembling two vertical frame members that are long in the vertical direction and have a plurality of horizontal binding holes that penetrate horizontally at intervals from near the upper end to near the lower end, and two horizontal frame members that are long in the horizontal direction, in a rectangular shape inside, and the vertical frame members have abutment portions that protrude toward the outside of the frame at positions where first horizontal binding holes, which are the horizontal binding holes located at the lowermost and uppermost of the horizontal binding holes, are provided, and the frame has a plurality of The abutment portion is arranged to abut against a vertically long fixed vertical member having a plurality of fixing holes corresponding to the horizontal binding holes, and a plate-shaped spacer having a through hole is arranged between the vertical frame member and the fixed vertical member so that the through hole of the spacer overlaps with the second horizontal binding hole, which is the horizontal binding hole located next below and above the first horizontal binding hole among the plurality of horizontal binding holes of the vertical frame member, and the frame is fixed to the fixed vertical member by fixing devices inserted into the horizontal binding holes and the fixing holes.

[0009] Furthermore, a damper that alleviates horizontal shear force is arranged between the position where a third horizontal hole, which is a plurality of horizontal holes other than the first horizontal hole and the second horizontal hole of the vertical frame member, is provided and the position where the fixing hole corresponding to the third horizontal hole of the fixed vertical member is provided.

[0010] Furthermore, a plate-shaped base plate is placed at the lower end of the vertical frame member to fix the frame to the structural body of the building, and the base plate is fixed to the vertical frame member by welding its upper surface to the lower ends of two sides of the vertical frame member facing in the thickness direction of the load-bearing wall and three sides of the lower end of one side of the vertical frame member facing the outside of the frame.

[0011] Furthermore, the brace has a long brace that spans diagonally inside the frame and is fixed to the inside corner formed by the vertical frame member and the horizontal frame member below, and is fixed so that it is at the same height as the top surface of the base plate and the center position between the vertical frame member and the fixed vertical member is located on the extension line of the brace. [Effects of the Invention]

[0012] In the shear wall of the present invention, the vertical frame members are fixed to the fixed vertical members in the following states, starting from near their upper and lower ends toward the center in the longitudinal direction: a state in which the vertical frame members abut against the fixed vertical members at their abutment portions; a state in which plate-shaped spacers are provided between the vertical frame members and the fixed vertical members; and a state in which a gap is formed between the vertical frame members and the fixed vertical members. In other words, the vertical frame members are fixed to the fixed vertical members gradually more firmly from the middle of the longitudinal direction of the vertical frame members toward near their upper and lower ends. Therefore, when an external force is applied to the frame of the shear wall and a horizontal shear force acts on it, the vertical frame members gradually bend from near their lower and upper ends toward the center to absorb the horizontal shear force. This prevents the vertical frame members from being fixed to the fixed vertical members more firmly than necessary and being unable to withstand the horizontal shear force, which would cause them to break, effectively increasing the strength of the shear wall. Furthermore, the shear wall of the present invention, which is formed by fixing means of vertical frame members to fixed vertical members, can be adapted to existing shear walls. In this case, only the shear wall and the fixed vertical members to which the vertical frame members of the shear wall are fixed need to be processed, but other walls do not require processing or adjustment and can be easily adapted.

[0013] Furthermore, by providing a damper that reduces horizontal shear force between the position where the third horizontal binding hole of the vertical frame member is provided and the position where the fixing hole corresponding to the third horizontal binding hole of the fixed vertical member is provided, when horizontal shear force is applied by an external force at the position of the vertical frame member fixed with a gap from the fixed vertical member, the horizontal shear force can be reduced. Therefore, the vertical frame member is prevented from bending more than necessary, and the strength of the shear wall can be improved.

[0014] Furthermore, the base plate for fixing the bearing wall frame to the structural body located below the frame is firmly fixed to the vertical frame member, i.e., because it is firmly fixed to the bearing wall frame, the bearing wall frame and the structural body located below the frame become one unit, increasing the strength of the bearing wall frame. Also, because the top surface of the base plate is simply welded to the three sides of the bottom ends of the two sides of the vertical frame member facing in the thickness direction of the bearing wall and the bottom end of one side of the vertical frame member facing the outside of the bearing wall frame, strength can be easily increased without requiring a specially shaped base plate or specially shaped fasteners.

[0015] Furthermore, when an external force is applied to the frame of a bearing wall and the frame tries to distort, the brace is fixed to the structural frame by the base plate and is in contact with the fixed vertical member by the abutment, and is pulled or compressed toward the lower corner where the brace is fixed to the fixed vertical member. In other words, the brace is pulled or compressed toward the strongest position of the frame of the bearing wall. Therefore, when the brace tries to pull or compress, the strongest position of the frame of the bearing wall supports the brace, thereby increasing the strength of the frame of the bearing wall. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a front view showing a wall including a bearing wall according to an embodiment of the present invention. FIG. [Figure 2] FIG. 2 is an enlarged view of a range A in FIG. [Figure 3] FIG. 2 is an enlarged view of a range B in FIG. [Figure 4] FIG. 10 is a perspective view showing how a brace according to one embodiment of the present invention is fixed. [Figure 5] This is a front view showing the existing wall before renovation. [Figure 6] FIG. 6 is an enlarged view of the area C in FIG. 5. [Figure 7] FIG. 6 is an enlarged view of a range D in FIG. 5. [Figure 8] This is an oblique view showing how the braces are fixed before renovation. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present invention will be described below with reference to the accompanying drawings, but the following is merely an example of an embodiment of the present invention, and the scope of the present invention is not limited to the following embodiment, and can be modified as appropriate without departing from the spirit of the present invention.

[0018] In this embodiment, the existing shear wall 6 included in the existing wall 1 of the existing building shown in Figure 5 is changed to the shear wall of the present invention in order to improve the strength of the existing shear wall 6.

[0019] First, we will explain the existing bearing wall 6. As shown in Fig. 5, the wall 1 of the building consists of two bearing walls 6 and an opening 43 sandwiched between the two bearing walls 6. The bearing walls 6 are provided with a frame 9, and the opening 43 is provided with a frame 44.

[0020] As shown in Figure 5, the frame 9 of the bearing wall 6 is formed by assembling two vertical frame members 12, which are long lip channel steel members in the vertical direction, and two horizontal frame members 22, which are long lip channel steel members in the horizontal direction, in a rectangular shape with their lip surfaces facing each other and inward.

[0021] As shown in Figure 5, the frame 9 of the load-bearing wall 6 is equipped with a middle crosspiece 23, which is a long lip channel steel whose both ends in the longitudinal direction are fixed to the longitudinal center of each of the two vertical frame members 12 so that it is suspended horizontally inside the frame 9, a total of four braces 29 fixed in an X-shape to each of the insides of the frame 9, which is divided into upper and lower parts by the middle crosspiece 23, inside corner plates 24 and brace mounting plates 25 for fixing the braces 29 to the frame 9, a base plate 32 fixed to the lower end of the vertical frame member 12 as shown in Figure 6, and an upper end plate 36 fixed to the upper end of the vertical frame member 12 as shown in Figure 7.

[0022] As shown in Figures 5 to 8, the inside corner plates 24 are plate-like members, and two of the inside corner plates 24 are fixed by welding so that they are parallel to each other at each inside corner 67 formed by the vertical frame members 12 and the horizontal frame members 22 and by the vertical frame members 12 and the center crosspiece 23, and as shown in Figure 8, approximately plate-like brace mounting plates 25 are fixed by welding to the opposing surfaces 72 of the pair of inside corner plates 24.

[0023] As shown in Figures 5 to 8, the brace 29 is a long, rod-shaped member that is provided with a turnbuckle 31 in the middle of its length that allows the tension to be adjusted, and the ends of the brace 29 in the length direction are fixed to the brace mounting plates 25 by welding, thereby fixing it to each inside corner 67 of the frame 9 of the load-bearing wall 6.

[0024] As shown in Figure 8, the brace mounting plate 25 has a groove 27, which is a recess that fits into the side of the brace 29 to increase the contact area between the brace mounting plate 25 and the end of the brace 29, and the groove 27 is located not in the center of the brace mounting plate 25 but eccentrically in the thickness direction 73 of the bearing wall 6 so that the two braces 29 can be fixed in an X-shaped cross shape inside the frame 9 of the bearing wall 6.

[0025] As shown in Figure 6, the base plate 32 is a plate-shaped member having a through hole 33, and is arranged so that the upper surface of the base plate 32 abuts the lower end of the vertical frame member 12, and is fixed to the vertical frame member 12 by welding the lower ends of the two side surfaces 15 (shown in Figure 8) in the thickness direction 73 of the load-bearing wall 6 of the vertical frame member 12 to the upper surface of the base plate 32.

[0026] As shown in Figure 7, the upper end plate 36 is a plate-shaped member having a through hole 37, and is arranged so that the underside of the upper end plate 36 abuts the upper end of the vertical frame member 12, and is fixed to the vertical frame member 12 by welding the upper ends of the two side surfaces 15 (shown in Figure 8) in the thickness direction 73 of the load-bearing wall 6 of the vertical frame member 12 to the underside of the upper end plate 12.

[0027] 6 and 7, the vertical frame members 12 of the frame 9 of the bearing wall 6 are provided with a plurality of horizontal binding holes 17 that penetrate horizontally at intervals from near the upper end to near the lower end. The plurality of horizontal binding holes 17 are divided into first horizontal binding holes 18, which are the horizontal binding holes 17 located at the lowermost and uppermost positions, and third horizontal binding holes 20, which are the remaining plurality of horizontal binding holes 17. At the positions of the vertical frame members 12 where the first horizontal binding holes 18 are provided, abutment portions 21 that protrude toward the outside of the frame 9 are formed by embossing.

[0028] As shown in Figure 5, the frame 9 of the load-bearing wall 6 is placed on the foundation 2, which is the structural body of the building, with the abutment portion 21 of one vertical frame member 13 of the two vertical frame members 12 abutting against the side of the column 5, which is the structural body of the building, and the abutment portion 21 of the other vertical frame member 14 abutting against the vertical frame member 45 of the frame 44 of the opening 43, which will be described later.

[0029] As shown in FIG. 6, the frame 9 of the bearing wall 6 is fixed to the foundation 2 by screwing a nut 70, which is a fixing device, from above onto an anchor bolt 68, which is a fixing device, that is driven into the foundation 2 through a through hole 33 in the base plate 32 of the frame 9 and tightening it. As shown in FIG. 7, the frame 9 of the bearing wall 6 is fixed to the beam 3 by screwing a nut 70, which is a fixing device, from the tip of a bolt 69, which is a fixing device, that is inserted into a through hole 71 provided in the lower flange 4 of the beam 3 that is an H-shaped steel and a through hole 37 in the upper end plate 36, and tightening it. The frame 9 is fixed to the vertical frame member 45 of the frame 44 of the opening 43 by screwing a nut 70 which is a fixing device onto the tip of a bolt 69 which is a fixing device inserted into the horizontal binding hole 17 of the other vertical frame member 14 of the frame 9 and the horizontal binding hole 46 of the vertical frame member 45 of the frame 44 of the opening 43 described later and tightening it, and the frame 9 is fixed to the vertical frame member 45 of the frame 44 of the opening 43 by screwing a nut 70 which is a fixing device onto the tip of a bolt 69 which is a fixing device inserted into the horizontal binding hole 17 of one vertical frame member 13 of the frame 9 and the horizontal binding hole provided in the pillar 5 (not shown).

[0030] In addition, in the shear wall 6 before renovation shown in Figure 5, the column 5 to which the vertical frame member 12 of the frame 9 of the shear wall 6 is fixed and the vertical frame member 45 of the frame 44 of the opening 43 are the fixed vertical members, and the horizontal binding hole 46 of the vertical frame member 45 of the frame 44 of the opening 43 to which the vertical frame member 12 is fixed and the horizontal binding hole of the column 5 to which the vertical frame member 12 is fixed are the fixing holes.

[0031] As shown in Figure 5, the frame 44 of the opening 43 is formed by assembling two vertical frame members 45, which are long lip channel steel members in the vertical direction, and two horizontal frame members 48, which are long lip channel steel members in the horizontal direction, in a rectangular shape with their lip surfaces facing each other and inward, and is equipped with a base plate 49 fixed to the lower ends of the vertical frame members 45, as shown in Figure 6, and an upper end plate 51 fixed to the upper ends of the vertical frame members 45, as shown in Figure 7.

[0032] As shown in Figure 6, the base plate 49 is a plate-shaped member having a through hole 50, and is positioned so that the upper surface of the base plate 49 abuts the lower end of the vertical frame member 45, and is fixed to the vertical frame member 45 by welding the lower ends of the two side surfaces in the thickness direction of the wall of the vertical frame member 45 to the upper surface of the base plate 49.

[0033] As shown in Figure 7, the upper end plate 51 is a plate-shaped member having a through hole 52, and is positioned so that the lower surface of the upper end plate 51 abuts against the upper end of the vertical frame member 45, and is fixed to the vertical frame member 45 by welding the upper ends of the two side surfaces in the thickness direction of the wall of the vertical frame member 45 to the lower surface of the upper end plate 51.

[0034] In addition, as shown in Figures 6 and 7, the vertical frame material 45 of the frame 44 of the opening 43 is provided with a plurality of horizontal binding holes 46 that penetrate horizontally at intervals from near the upper end to near the lower end, and abutment portions 47 that protrude toward the outside of the frame 44 are formed by embossing at the positions of the vertical frame material 45 where the lowest and uppermost horizontal binding holes 46 are provided.

[0035] As shown in Figure 5, the frame 44 of the opening 43 is placed on the foundation 2, which is the structural body of the building, with its two vertical frame members 45 abutting the other vertical frame member 14 of the frame 9 of each load-bearing wall 6.Then, as shown in Figure 6, the frame 44 is fixed to the foundation 2 by screwing a nut 70, which is a fixing device, from above onto an anchor bolt 68, which is a fixing device, that is driven into the foundation 2 through a through hole 50 in the base plate 49 of the frame 44 and tightening it.As shown in Figure 7, the frame 44 is fixed to the beam 3 by screwing a nut 70, which is a fixing device, onto the tip of a bolt 69, which is a fixing device, that is inserted into a through hole 71 provided in the lower flange 4 of the beam 3 and into a through hole 52 in the upper end plate 51.As described above, the other vertical frame member 14 of the frame 9 of the load-bearing wall 6 is fixed to the vertical frame member 45 of the frame 44 of the opening 43.

[0036] Next, the bearing wall of the present invention will be described. In this embodiment, when carrying out renovation to newly provide a large opening 53 in the existing wall 1 described above, the other bearing wall 8 of the bearing walls 6 is removed and the other bearing wall 7 is replaced with the bearing wall of the present invention.

[0037] First, the fasteners securing the frames 9 of the two bearing walls 6 and the frame 44 of the existing opening 43 are removed, and the frames 9 of the two bearing walls 6 and the frame 44 of the existing opening 43 are removed from the foundation 2, beams 3, and columns 5. Then, as shown in Figure 1, the frame 54 of the large opening 53 is placed in the position where the frame 11 of the other bearing wall 8 and the frame 44 of the existing opening 43 were originally placed and fixed.

[0038] As shown in Figure 1, the frame 54 of the large opening 53 is formed by assembling two vertical frame members 55, which are long lip channel steel members in the vertical direction, and two horizontal frame members 61, which are long lip channel steel members in the horizontal direction, in a rectangular shape with their lip surfaces facing each other and inward.Like the frame 44 of the existing opening 43, it has a base plate 62 at the lower end of the vertical frame members 55, as shown in Figure 2, and an upper end plate 64 at the upper end of the vertical frame members 55, as shown in Figure 3.

[0039] In addition, as shown in Figures 2 and 3, the vertical frame material 55 of the frame 54 of the large opening 53 has a plurality of horizontal holes 58 that penetrate horizontally at intervals from near the upper end to near the lower end, and abutment portions 60 that protrude toward the outside of the frame are formed by embossing at the positions where the horizontal holes 58 located at the lowermost and uppermost positions of the vertical frame material 55 are provided.

[0040] The frame 54 of the large opening 53 is fixed to the foundation 2 by screwing and tightening a nut 70, which is a fixing device, from above onto an anchor bolt 68, which is a fixing device that passes through a through hole 63 in the base plate 62 of the frame 54 and is driven into the foundation 2, as shown in Figure 2; and by screwing and tightening a nut 70, which is a fixing device, from the tip of a bolt 69, which is a fixing device, inserted into a through hole 71 in the lower flange 4 of the beam 3, which is an H-shaped steel, and into a through hole 65 in the upper end plate 64, as shown in Figure 3; and by screwing and tightening a nut 70, which is a fixing device, from the tip of a bolt 69, which is a fixing device, inserted into a horizontal hole 58 in one of the vertical frame members 56 of the vertical frame members 55 of the frame 54 and a horizontal hole in the column 5, as shown in Figure 3, and by screwing and tightening a nut 70, which is a fixing device, from the tip of the bolt 69, which is a fixing device, inserted into a horizontal hole 58 in one of the vertical frame members 56 of the frame 54 and into a horizontal hole in the column 5, as shown in Figure 2.

[0041] Next, the base plate 32 is separated from the vertical frame member 12 of the frame 10 of one of the load-bearing walls 7, and a new base plate 34 of the same shape as the base plate 32 and having a through hole 35 is placed so that the upper surface of the base plate 34 abuts the lower end of the vertical frame member 12 of the frame 10 of one of the load-bearing walls 7, and the new base plate 34 is fixed to the lower end of the vertical frame member 12 by welding the lower ends of the two side surfaces 15 (shown in Figure 4) of the vertical frame member 12 in the thickness direction 73 of the load-bearing wall 6 and the side surface 16 (shown in Figure 4) of the vertical frame member 12 facing the outside of the frame 9 to the upper surface of the base plate 34.

[0042] In addition, the upper end plate 36 is separated from the vertical frame member 12 of the frame 10 of one of the load-bearing walls 7, and a new upper end plate 38 having the same shape as the upper end plate 36 and a through hole 39 is placed so that the underside of the upper end plate 38 abuts the upper end of the vertical frame member 12 of the frame 10 of one of the load-bearing walls 7, and the upper ends of the two side surfaces 15 (shown in Figure 4) in the thickness direction 73 of the load-bearing wall 6 of the vertical frame member 12 and the side surface 16 (shown in Figure 4) facing the outside of the frame 9 are welded to the underside of the upper end plate 38, thereby fixing the new upper end plate 38 to the upper end of the vertical frame member 12.

[0043] The material of the base plate 32 and upper end plate 36 before replacement was SS400, a rolled steel material for general structures as specified in the steel material standards (JIS standards), and the material of the new base plate 34 and upper end plate 38 was SM490, a rolled steel material for welded structures as specified in the steel material standards (JIS standards).

[0044] In addition, second horizontal binding holes 19, which are horizontal binding holes 17 that penetrate horizontally, are newly provided in the vertical frame member 10 of the frame 10 of one of the bearing walls 7 between the lower first horizontal binding hole 18 and the lowest third horizontal binding hole 20 as shown in Figure 2, and between the upper first horizontal binding hole 18 and the highest third horizontal binding hole 20 as shown in Figure 3. Furthermore, horizontal binding holes 58 corresponding to the second horizontal binding holes 19 are newly provided in the column 5, which is the fixed vertical member to which the vertical frame 12 of the frame 10 is fixed, and in the other vertical frame member 57 of the frame 54 of the large opening 53.

[0045] Additionally, the braces 29 are separated from the brace mounting plates 25 of the frame 10 of one of the bearing walls 7, the brace mounting plates 25 are separated from the inside corner plates 24 of the frame 10 of one of the bearing walls 7, and the inside corner plates 24 are separated from the frame 10 of one of the bearing walls 7. Then, as shown in FIGS. 1 to 4, new, approximately triangular inside corner plates 28 with a height of 150 mm and a width of 90 mm are fixed by welding to each inside corner 67 of the frame 10 of one of the bearing walls 7 in the same way as the original inside corner plates 24. As shown in FIG. 4, brace mounting plates 25 are fixed by welding to the opposing surfaces 74 of each pair of new inside corner plates 28, and the longitudinal ends of the braces 29 are fixed by welding to the brace mounting plates 25.

[0046] 2 and 3, the brace mounting plate 25 is fixed to the inside corner plate 28 so that the position of the opposite end 26 of the brace mounting plate 25 to which the brace 29 is fixed is at the height between the first horizontal binding hole 18 and the second horizontal binding hole 19 lined up above and below the vertical frame member 12, and the end 26 of the brace mounting plate 25 is at least 60 mm away from the surface on which the horizontal binding hole 17 of the vertical frame member 12 is provided, and as shown in FIG. 2, the brace mounting plate 25 fixed to the inside corner plate 28 of the inside corner 67 between the vertical frame member 12 and the lower horizontal frame member 22 is positioned so that the abutment portion 21 of the vertical frame 12 described later abuts against the fixed vertical members 5, 57, and is at an angle such that the abutment portion 21 is positioned on the extension line E of the central axis of the brace 29 fixed to the brace mounting plate 25, is at the same height as the upper surface of the base plate 34 and at an angle such that the center position F between the vertical frame member 12 and the fixed vertical members 5, 57 is located.

[0047] Here, the brace mounting plate 25 is fixed so that its end 26 is positioned at the height between the first horizontal binding hole 18 and the second horizontal binding hole 19 that are lined up above and below the vertical frame member 12, and at least 60 mm away from the surface on which the horizontal binding hole 17 of the vertical frame member 12 is provided, so that the tools used in the work of fixing the vertical frame member 12 to the fixed vertical members 5, 57, which will be described later, can access the horizontal binding hole 17.

[0048] Then, the frame 10 of one of the load-bearing walls 7 is repositioned in its original position so that the abutment portion 21 of one of the vertical frame members 13 of the frame 10 abuts against the column 5, which is the fixed vertical member, and the abutment portion 21 of the other vertical frame member 14 abuts against the abutment portion 60 of the other vertical frame member 57 of the frame 54 of the large opening 53, which is the fixed vertical member, as shown in Figure 1.

[0049] Next, the frame 10 of one of the bearing walls 7 is fixed to the foundation 2 and beams 3. The method for fixing the frame 10 of one of the bearing walls 7 to the foundation 2 and beams 3 is the same as the method for fixing the frame 10 of one of the bearing walls 7 to the foundation 2 and beams 3 before the renovation, which has already been explained, so an explanation of this method will be omitted.

[0050] When the frame 10 of one of the bearing walls 7 is repositioned in its original position, the abutment portions 21 of the vertical frame members 12 of the frame 10 abut against the fixed vertical members 5, 57, so as shown in Figures 2 and 3, a gap 66 is created between the fixed vertical members 5, 57 and the portions of the vertical frame members 12 other than the positions where the abutment portions 21 are provided. Then, with two plate-shaped spacers 40 and a plurality of dampers 42 placed in the gap, the vertical frame members 12 of the frame 10 of one of the bearing walls 7 are fixed to the fixed vertical members 5, 57.

[0051] As shown in Figures 2 and 3, the spacers 40 are plate-shaped members having through holes 41 and a thickness equal to the width of the gap 66. One spacer 40 is placed in the gap 66 so that its through hole 41 overlaps with the second horizontal binding hole 19 above the vertical frame member 12, and the other spacer 40 is placed in the gap 66 so that its through hole 41 overlaps with the second horizontal binding hole 19 below the vertical frame member 12.

[0052] As shown in Figures 2 and 3, the dampers 42 are spring spacers made of long steel material wound in a spiral shape, and multiple dampers 42 are arranged in the gap 66 so that they can expand and contract toward the vertical frame members 12 and the fixed vertical members 5, 57 to mitigate horizontal shear forces, and so that the center of their spiral overlaps with each of the third horizontal binding holes 20 of the vertical frame members 12.

[0053] As shown in Figures 2 and 3, a bolt 69 is inserted into the horizontal binding hole 17 of the other vertical frame member 14 of the frame 10 of one of the load-bearing walls 7 and the horizontal binding hole 58 of the other vertical frame member 57 of the frame 54 of the large opening 53, and a nut 70 is screwed onto the tip of the bolt 69 and tightened to fix the other vertical frame member 14 to the other vertical frame member 57 of the frame 54 of the large opening 53. Although not shown, a bolt 69 is inserted into the horizontal binding hole 17 of one of the vertical frame members 13 of the frame 10 and the horizontal binding hole provided in the column 5, and a nut 70 is screwed onto the tip of the bolt 69 and tightened to fix the other vertical frame member 14 to the column 5.

[0054] In the shear wall 7 of this embodiment shown in Figure 1, the column 5 to which the vertical frame member 12 of the frame 10 of the shear wall 7 is fixed and the other vertical frame member 57 of the frame 54 of the large opening 53 are fixed vertical members, and the horizontal binding hole 58 of the other vertical frame member 57 of the frame 54 of the large opening 53 to which the vertical frame member 12 is fixed and the horizontal binding hole of the column 5 are fixing holes.

[0055] As described above, by changing one of the existing shear walls 7 to the shear wall of the present invention, the one shear wall 7 can compensate for the strength provided by the other shear wall 8 that was removed, and a large opening 53 can be provided in the existing wall 1.

[0056] In this embodiment, the fixed vertical members to which the vertical frame members 12 of the load-bearing wall 7 of the present invention are fixed are the vertical frame members 55 of the frame 54 of the large opening 53 and the pillar 5, but the fixed vertical members of the present invention are not limited to this and may be, for example, vertically long and strong members such as partition posts or through pillars.

[0057] Furthermore, although the damper 42 in this embodiment is a spring-shaped spring spacer, it may be any member that can reduce horizontal shear force, such as a rubber member.

[0058] Furthermore, in this embodiment, the existing load-bearing wall 7 was changed to the load-bearing wall of the present invention in order to provide a large opening 53 in the existing wall 1, but for example, in a renovation to change the layout of the interior space of a building, it is possible to remove a load-bearing wall that is a partition wall for dividing the interior space and replace another load-bearing wall that is a partition wall or exterior wall with the load-bearing wall of the present invention, thereby removing the partition wall that is to be removed without installing a new load-bearing wall, thereby increasing the degree of freedom in renovation.

[0059] Furthermore, in this embodiment, the existing wall 1 is renovated by changing the existing load-bearing wall 7 into the load-bearing wall of the present invention, but the load-bearing wall of the present invention is not limited to this and may also be applied to newly constructed buildings. [Explanation of symbols]

[0060] 2 Foundation (structural body) 5 Column (fixed vertical member) 7 Load-bearing wall 10 frames 12 Vertical frame material 22 Horizontal frame material 17 Horizontal hole 18 First transversal hole 19 Second horizontal binding hole 20 Third transversal hole 21 Contact part 29 Brace E Extension of the brace 40 spacer 41 Through hole 42 Damper 34 base plate 35 through holes 15. The surface of the vertical frame member facing in the thickness direction of the shear wall 16. The surface of the vertical frame member facing the outside of the frame 67 Inside corner 57 Vertical frame material (fixed vertical material) 58 Horizontal binding hole (fixed hole) F The same height as the top surface of the base plate and the center position between the vertical frame member and the fixed vertical member 68 Anchor bolt (fixing device) 69 Bolts (fixtures)

Claims

1. A load-bearing wall having a frame formed by assembling two vertical frame members having a plurality of horizontal holes that are spaced apart from each other from near the top to near the bottom, and two horizontal frame members that are long in the horizontal direction, into a rectangular shape. The vertical frame material has an abutment portion protruding toward the outside of the frame at a position where a first horizontal binding hole, which is the horizontal binding hole located at the lowermost and uppermost of the plurality of horizontal binding holes, is provided, The frame is arranged so that the abutment portion abuts against a vertically long fixed vertical member having a plurality of fixing holes corresponding to the plurality of horizontal binding holes, A plate-shaped spacer having a through hole is disposed between the vertical frame material and the fixed vertical member so that the through hole of the spacer overlaps with the second horizontal hole, which is the horizontal hole located next below and above the first horizontal hole among the multiple horizontal holes of the vertical frame material, A load-bearing wall characterized in that the frame is fixed to the fixed vertical member by fasteners inserted into the horizontal fastening holes and the fixing holes.

2. The load-bearing wall according to claim 1, characterized in that a damper for mitigating horizontal shear force is arranged between a position where a third horizontal hole, which is a plurality of horizontal holes other than the first horizontal hole and the second horizontal hole of the vertical frame member, is provided and a position where the fixing hole corresponding to the third horizontal hole of the fixed vertical member is provided.

3. A base plate having a plate-like shape and a through hole is disposed at the lower end of the vertical frame member for fixing the frame to a structural body located below the frame, A load-bearing wall as described in either claim 1 or claim 2, characterized in that the base plate is fixed to the vertical frame members by welding its upper surface to three edges of the lower ends of two sides of the vertical frame member facing in the thickness direction of the load-bearing wall and to the lower end of one side of the vertical frame member facing the outside of the frame.

4. A long brace is provided diagonally on the inside of the frame, The vertical frame member is fixed to the horizontal frame member at a corner between the vertical frame member and the horizontal frame member below, and the vertical frame member is fixed at the same height as the upper surface of the base plate and the center position between the vertical frame member and the fixed vertical member is located on an extension line of the brace.

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