Earthquake-resistant wall structure and earthquake-resistant wall construction method

Abstract

To provide an earthquake-resisting wall etc. capable of easily securing high-yield strength and toughness performance.SOLUTION: An earthquake-resisting wall 6 includes a steel plate 1 arranged over the entire length in the height direction of the earthquake-resisting wall 6, and a pair of wood plates 2 arranged so as to sandwich the steel plate 1 from the front and the rear. The upper end and the lower end of the steel plate 1 are bolted to joint plates 31 protruding from upper and lower beams 3, and the pair of wood plates 2 are joined so as to be pressed against the steel plate 1. Further, a notch 23 is formed on the surface of the wood plate 2 on the steel plate 1 side, and the joint part between the steel plate 1 and the joint plate 31 is accommodated in the notch 23.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a seismic wall and a method for constructing the same. [Background technology]

[0002] In recent years, wood materials have been widely used in structures from the standpoint of carbon fixation, wellness, and design, and are increasingly being applied to earthquake-resistant walls such as CLT (Cross Laminated Timber) and LVL (Laminated Veneer Lumber).

[0003] When applying wooden materials to earthquake-resistant walls, a conventional method is to use metal joints such as steel drift pins and bolts to join wooden planks to steel plates protruding from a framework.

[0004] Patent Document 1 also discloses an earthquake-resistant wall in which a pair of wooden plates are pressed together with a steel member protruding from a beam between them, in which roughened portions are formed on the surface of the steel members and are then engaged with the wooden members to join the steel members. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2018-204397 A Summary of the Invention [Problem to be solved by the invention]

[0006] Conventional earthquake-resistant walls have a problem in that it is difficult to ensure high strength and toughness because the strength is determined by the brittle fracture of the wood material near the joints between the wood material and the steel plate. The earthquake-resistant wall in Patent Document 1 also has a similar problem because it uses steel members only in the joints.

[0007] The present invention has been made in consideration of the above problems, and an object of the present invention is to provide a seismic wall or the like that can easily ensure high strength and toughness. [Means for solving the problem]

[0008] The first invention for achieving the above-mentioned object comprises a steel plate arranged from the upper end to the lower end of a seismic wall, and a pair of wooden boards arranged to sandwich the steel plate from the front and rear, the upper and lower ends of the steel plate being bolted to connecting plates protruding from the upper and lower frame members, The pair of wooden boards are placed on the lower frame member with their lower ends in contact with each other, and a notch is formed in the surface of the lower end of the pair of wooden boards facing the steel plate, and a joint between the lower end of the steel plate and the joint plate protruding from the lower frame member is accommodated in the notch, The pair of wooden boards The surface of the steel plate on which the notch is not formed is The steel plate To A seismic wall characterized by being joined in a pressing manner. structure It is.

[0009] Earthquake-resistant wall of the present invention structure In this method, a steel plate arranged from the top to the bottom of the earthquake-resistant wall is joined to the connecting plates of the upper and lower frame materials, and the steel plate is sandwiched between a pair of wooden boards, which press the steel plate from the front and back. The earthquake resistance of the earthquake-resistant wall is mainly realized by the steel plate, and the buckling of the steel plate due to horizontal shear deformation of the earthquake-resistant wall is restrained by the pair of wooden boards, so that high strength and toughness can be easily ensured even though the earthquake-resistant wall has a design that exposes wood. In addition, the steel plate is arranged from the top to the bottom of the earthquake-resistant wall, and the joints between the steel plate and the connecting plates are joined with bolts, which are generally used in steel-frame construction, so the total number of members can be reduced and construction is simple.

[0010] Furthermore, a notch is formed on the surface of the upper end of the pair of wooden boards facing the steel plate, and a joint between the upper end of the steel plate and the joint plate protruding from the upper frame material is accommodated in the notch. Good 。

[0011] The plurality of steel plates may be arranged so that they partially overlap each other. By stacking multiple steel plates, the overall shape of the steel plates can be varied, improving design freedom. In addition, each steel plate can be made smaller and have a simpler shape, which improves transportability and ease of construction and increases the yield when cutting the steel plates from the base material.

[0012] A plurality of the steel plates may be arranged overlapping each other in an X-shape, and the steel plates may be joined together at the overlapping portions. With this, by fixing one of the steel plates that bears the compressive force during shear deformation of the earthquake-resistant wall to the other steel plate, the buckling length of the one of the steel plates can be shortened, thereby suppressing buckling.

[0013] The second invention is a method for constructing an earthquake-resistant wall having a pair of wooden boards and a steel plate, comprising the steps of: setting a steel plate from the upper end to the lower end of the earthquake-resistant wall between upper and lower frame members; and bolting the upper and lower ends of the steel plate to connecting plates protruding from the upper and lower frame members. (a) and a step of placing a pair of wooden boards so as to sandwich the steel plate from the front and rear, and joining the pair of wooden boards by pressing them against the steel plate. (b) And, A notch is formed in the surface of the lower end of the pair of wooden boards facing the steel plate, and in step (b), the pair of wooden boards are placed on the lower frame material with their lower ends in contact with each other, and the joint between the lower end of the steel plate and the joint plate protruding from the lower frame material is accommodated in the notch, and the surface of the pair of wooden boards facing the steel plate, where the notch is not formed, is pressed against the steel plate to join them. The present invention relates to a method for constructing an earthquake-resistant wall.

[0015] No. of 2 The invention is a method for constructing an earthquake-resistant wall according to the first invention. In the second invention, the work of joining the steel plate and the joining plate can be carried out before placing the wooden boards, so construction is easy. do. Effect of the Invention

[0016] According to the present invention, it is possible to provide a seismic wall or the like that can easily ensure high strength and toughness. [Brief description of the drawings]

[0017] [Figure 1] A diagram showing earthquake-resistant wall 6. [Diagram 2] An example in which notches 23 are provided at the top and bottom ends of a wooden board 2. [Diagram 3] A diagram showing a method of constructing a seismic wall 6. [Figure 4] FIG. 2 shows variations of steel plate 1. [Diagram 5] FIG. 2 shows variations of steel plate 1. [Figure 6] A diagram showing earthquake-resistant wall 6a. [Figure 7] A diagram showing a method of constructing an earthquake-resistant wall 6a. [Figure 8] FIG. 2 is a diagram showing an example of the configuration of a steel plate 1 and a wooden plate 2. [Figure 9] A diagram showing earthquake-resistant wall 6b. [Figure 10] An example of joining steel plates 1 together. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0019] [First embodiment] (1. Earthquake-resistant wall 6) Figures 1(a) and (b) are diagrams showing an earthquake-resistant wall 6 according to a first embodiment of the present invention. Figure 1(a) is a diagram showing the wall surface of the earthquake-resistant wall 6. Figure 1(b) is a diagram showing the earthquake-resistant wall 6 as seen from the side in the beam axis direction, and corresponds to the cross section taken along line AA in Figure 1(a). The beam axis direction corresponds to the left-right direction in Figure 1(a).

[0020] The earthquake-resistant wall 6 is a wall member having a steel plate 1 and a pair of wooden boards 2, and is arranged between upper and lower beams 3 which are framework materials of the structure. The beams 3 are, for example, steel beams, but are not limited to this and may be made of RC (reinforced concrete), SRC (steel reinforced concrete), wood, etc.

[0021] As shown in Fig. 1(c), the earthquake-resistant wall 6 is constructed by placing a pair of wooden boards 2 at the front and rear with a steel plate 1 sandwiched therebetween. The front-to-rear direction corresponds to the normal direction of the wall surface of the earthquake-resistant wall 6. Moreover, the steel plate 1 and the wooden board 2 in Fig. 1(c) are only shown in outline, and the detailed configurations of the steel plate 1 and the wooden board 2 (for example, a notch 23 in the wooden board 2, which will be described later) are not shown.

[0022] The steel plate 1 is a steel plate-like member with an X-shaped plate surface, and is arranged over approximately the entire length of the height direction of the earthquake-resistant wall 6, from the upper end to the lower end. The upper and lower ends of the steel plate 1 are joined to steel joint plates 31 protruding from upper and lower beams 3. The joint plate 31 protrudes downward from the upper beam 3, and the joint plate 31 protrudes upward from the lower beam 3.

[0023] The joining plates 31 connecting the upper end of the steel plate 1 to the upper beam 3, and the joining plates 31 connecting the lower end of the steel plate 1 to the lower beam 3 are bolted. The joining plates 31 connecting the upper and lower ends of the steel plate 1 to the upper and lower beams 3 are provided with holes (not shown) for inserting bolts.

[0024] In this embodiment, the upper end of the steel plate 1 and the connecting plate 31 of the upper beam 3 are butted together, and splice plates 5 that straddle the steel plate 1 and the connecting plate 31 are arranged in front of and behind the steel plate 1 and the connecting plate 31. These splice plates 5 are then fastened to each other by fasteners 4 consisting of high-strength bolts and nuts, sandwiching the steel plate 1 and the connecting plate 31 between them. This results in a bolted connection between the upper end of the steel plate 1 and the connecting plate 31 of the upper beam 3. The lower end of the steel plate 1 and the connecting plate 31 of the lower beam 3 are similarly bolted together, thereby fixing the steel plate 1 to the upper and lower beams 3.

[0025] The wooden boards 2 are planar wooden materials having a rectangular board surface. The wooden boards 2 on the front and rear of the steel plate 1 are fastened to each other using fasteners 25 such as bolts and nuts. As a result, the pair of wooden boards 2 are pressed against the steel plate 1 and joined together.

[0026] The fastener 25 is disposed at a position avoiding the steel plate 1, and a hole (not shown) for inserting a bolt is provided in the wooden board 2 at that position.

[0027] At the lower end of the wooden board 2, a notch 23 is formed on the surface facing the steel plate 1, and the joint between the lower end of the steel plate 1 and the joint plate 31 of the lower beam 3 is accommodated in this notch 23. This makes the joint hidden so that it cannot be seen from the outside.

[0028] In this embodiment, the joint between the upper end of the steel plate 1 and the joint plate 31 of the upper beam 3 is exposed above the wooden board 2, but this is because the joint is hidden in the ceiling space of the ceiling surface (not shown). However, as shown in FIG. 2, a notch 23 similar to that at the lower end may be provided at the upper end of the wooden board 2 so that the joint is accommodated in the notch 23. Alternatively, the notch 23 may not be provided and the joint may be exposed above and below the wooden board 2. In the example of FIG. 2, a protruding portion 21 that protrudes toward the other wooden board 2 is provided at the position of the fastener 25 on one wooden board 2, and the protruding portion 21 is abutted against the other wooden board 2. The protruding portion 21 may be formed by attaching a member made of wood, iron, plastic, rubber, or the like, separate from the wooden board 2 to the wooden board 2, or may be formed integrally with the wooden board 2 by notching the wooden board 2 itself.

[0029] (2. Construction method of earthquake-resistant wall 6) Fig. 3 is a diagram showing a method for constructing an earthquake-resistant wall 6. To construct an earthquake-resistant wall 6, first, as shown in Fig. 3(a), the upper and lower ends of a steel plate 1 are joined to joining plates 31 provided on upper and lower beams 3 as shown in Fig. 3(b). The joining method is as described above, and involves bolt joining using fasteners 4 such as high-strength bolts and splice plates 5. The number and arrangement of the high-strength bolts are determined so that the earthquake-resistant wall 6 can exert sufficient strength.

[0030] Next, as shown by the arrows in Fig. 3(c), a pair of wooden boards 2 are erected so as to sandwich the steel plate 1 from the front and back. These wooden boards 2 are arranged so that the notches 23 at their lower ends face the steel plate 1, and the joint between the lower end of the steel plate 1 and the joint plate 31 of the lower beam 3 is accommodated within the notches 23.

[0031] 1(a) and 1(b), a pair of front and rear wooden boards 2 are fastened together using fasteners 25 such as bolts, and these wooden boards 2 are joined by pressing them against the steel plate 1. Holes (not shown) in the wooden boards 2 through which the bolts passed are blocked with blocking material such as wooden plugs as necessary, and the earthquake-resistant wall 6 is completed.

[0032] As described above, in the earthquake-resistant wall 6 of the first embodiment, the steel plate 1 arranged from the upper end to the lower end of the earthquake-resistant wall 6 is joined to the connecting plates 31 of the upper and lower beams 3, and the steel plate 1 is sandwiched between a pair of wooden boards 2 from the front and back, and these wooden boards 2 press the steel plate 1 from the front and back.

[0033] The earthquake resistance of the earthquake-resistant wall 6 is mainly achieved by the steel plate 1, and buckling of the steel plate 1 due to horizontal shear deformation in the in-plane direction of the earthquake-resistant wall 6 is restrained by a pair of wooden boards 2. If the steel plate 1 were arranged without being sandwiched between the wooden boards 2, there would be a concern that the load would decrease due to buckling of the steel plate 1 when horizontal shear deformation occurs in the earthquake-resistant wall 6. However, in the earthquake-resistant wall 6 in which the steel plate 1 is sandwiched between the wooden boards 2 to stiffen it, the steel plate 1 is restrained and buckling is suppressed, so the steel plate 1 resists horizontal forces and exhibits stable behavior by plasticizing, making it easy to ensure high strength and toughness.

[0034] The steel plate 1 is arranged from the upper end to the lower end of the earthquake-resistant wall 6, and the joint between the steel plate 1 and the joint plate 31 is joined by bolts, which are generally used in steel-frame construction, so the total number of components can be reduced and construction is simple. Also, in this embodiment, this joint is arranged within a notch 23 formed in the wooden board 2, which hides the joint and exposes the wood, improving the design.

[0035] However, the present invention is not limited to the above embodiment. For example, various arrangements and shapes of the steel plates 1 are possible. For example, as shown in FIG. 4(a), two strip-shaped steel plates 1 may be arranged overlapping each other in an X-shape. The method of joining each steel plate 1 to the joining plate 31 is the same as described above. As shown in FIG. 4(b), the steel plate 1 may be V-shaped, or as shown in FIG. 4(c), the steel plate 1 may be rectangular. As shown in FIG. 4(d), a plurality of strip-shaped steel plates 1 may be arranged side by side.

[0036] In particular, by arranging multiple steel plates 1 so that they partially overlap, as shown in Figure 4(a), the overall shape of the steel plates 1 can be varied, improving design freedom. In addition, each steel plate 1 can be made smaller and have a simpler shape, which improves transportability and workability and increases the yield when cutting the steel plates from the base material.

[0037] For example, as shown in the left diagram of Fig. 5(a), it is possible to overlap three strip-shaped steel plates 1 in an X-shape by sandwiching the front and rear of a steel plate 1 between a pair of steel plates 1. In this case, with regard to joining the pair of steel plates 1 to a joining plate 31, as shown in the right diagram of the same figure, the joining plate 31 protruding from the beam 3 can be sandwiched between the pair of front and rear steel plates 1, and these steel plates 1 can be fastened by sandwiching the joining plate 31 with fasteners 4 such as high-strength bolts.

[0038] Also, as shown in the left diagram of Fig. 5(b), it is possible to arrange two strip-shaped steel plates 1 in a V-shape. In this case, the two steel plates 1 overlap each other at the tip of the V-shape, and as for the joining of this overlapping portion to the beam 3, it is possible to sandwich the overlapping portion between a pair of joining plates 31 protruding from the beam 3, and fasten these joining plates 31 by using fasteners 4 such as high-strength bolts to sandwich the overlapping portion, as shown in the right diagram of Fig. 5(b). Alternatively, it is possible to sandwich the joining plate 31 protruding from the beam 3 between two steel plates 1, and fasten these steel plates 1 by sandwiching the joining plates 31, as shown in the right diagram of Fig. 5(a).

[0039] Alternatively, as shown generally in the left diagram of Fig. 5(c), it is possible to combine upper and lower V-shaped steel plates 1 to form an overall X-shape. The upper and lower steel plates 1 can be joined by bolting using fasteners 4 such as high-strength bolts and splice plates 5, as shown in the cross section in the wall thickness direction in the right diagram of the same figure. The joint can be hidden by forming a notch 26 in advance on the surface of the wood board 2 facing the steel plate 1 to accommodate the joint.

[0040] Below, other examples of the present invention will be described as the second and third embodiments. Each embodiment will be described with respect to the differences from the previously described embodiments, and the same configurations will be denoted by the same reference numerals in the drawings and the like, and the description thereof will be omitted. In addition, the configurations described in each embodiment, including the first embodiment, can be combined as necessary.

[0041] [Second embodiment] Figures 6(a)-(c) are views showing a seismic wall 6a of the second embodiment in the same manner as Figures 1(a)-(c), and Figure 6(b) corresponds to the cross section taken along line BB in Figure 6(a). The seismic wall 6a of the second embodiment differs from the seismic wall 6 of the first embodiment mainly in that it is composed of a combination of units in which steel plates 1 are fixed in advance to wooden boards 2 by adhesion or the like.

[0042] The units are arranged so that the steel plates 1 face each other. As for joining the steel plates 1 of each unit to the joint plates 31, as shown in the right diagram of Fig. 5(a), the joint plates 31 protruding from the beams 3 can be sandwiched between the steel plates 1 of each unit, and these steel plates 1 can be fastened together by sandwiching the joint plates 31 with fasteners 4 such as high-strength bolts.

[0043] As shown in Figures 6(a) and (b), a work hole 27 penetrating the wooden board 2 from front to back is formed at the position corresponding to the steel plate 1 at the lower end of the wooden board 2, and the notch 23 is omitted in this embodiment.

[0044] When constructing the earthquake-resistant wall 6a, as shown in Fig. 7(b), a unit of steel plate 1 and wooden plate 2 is erected from the front and back to the joining plates 31 provided on the upper and lower beams 3 as shown in Fig. 7(a). At this time, the unit can be temporarily fixed by temporarily joining the upper and lower ends of the steel plate 1 of the unit erected earlier to the joining plates 31 of the upper and lower beams 3 with bolts and nuts. As holes for inserting bolts, holes dedicated to temporary joining can be provided separately in the steel plate 1 and the joining plates 31, but holes for actual joining can also be used for temporary joining.

[0045] Thereafter, the upper and lower ends of the steel plates 1 of each unit are joined (full joining) to the joining plates 31 of the upper and lower beams 3 as described above. The work holes 27 are formed to facilitate the temporary joining and full joining operations, and are subsequently blocked with a blocking material (not shown).

[0046] After this, the procedure is the same as in the first embodiment, and the wooden boards 2 of each unit are fastened together using fasteners 25 such as bolts as shown in Fig. 6. As a result, the pair of wooden boards 2 are joined so as to be pressed against the steel plate 1, and the earthquake-resistant wall 6a is constructed.

[0047] In the second embodiment, too, a steel plate 1 arranged from the upper end to the lower end of the earthquake-resistant wall 6a is joined to the connecting plates 31 of the upper and lower beams 3, and the steel plate 1 is sandwiched between a pair of wooden boards 2 from the front and back and pressed against the steel plate 1 from the front and back, thereby achieving the same effect as in the first embodiment.

[0048] In the second embodiment, the construction can be completed in a short period of time by using a unit in which the wooden board 2 and the steel plate 1 are integrated in advance. On the other hand, in the first embodiment, the joining work between the steel plate 1 and the joining plate 31 can be performed before the wooden board 2 is placed, which has the advantage of facilitating the construction.

[0049] In the second embodiment, the earthquake-resistant wall 6a is formed by a pair of units in which the steel plate 1 is integrated with the wooden board 2, but only one of the wooden boards 2 may be a unit in which the steel plate 1 is fixed. In this case, the unit is erected first, and the upper and lower ends of the steel plate 1 are joined to the joining plates 31 of the upper and lower beams 3 using fasteners 4 and splice plates 5 as in FIG. 1(b), and then the other wooden board 2 is erected and the pair of front and rear wooden boards 2 are fastened together with fasteners 25.

[0050] Also, in the second embodiment, the shape of the steel plate 1 is not limited, and for example, the steel plate 1 of each unit may be rectangular as shown in Fig. 8(a).Also, as shown in Fig. 8(b), two strip-shaped steel plates 1 forming a V shape as a whole may be integrated with the respective wooden boards 2 of each unit so that both steel plates 1 overlap at the tip of the V shape.

[0051] In this embodiment, work holes 27 are formed in the wooden boards 2 of each unit, but it is also possible to omit the work holes 27 in the wooden boards 2 of one of the units by fixing high-strength bolts to the steel plate 1 of that unit in advance.

[0052] [Third embodiment] 9(a) and (b) are views showing a third embodiment of an earthquake-resistant wall 6b, similar to Figs. 1(a) and (c). The earthquake-resistant wall 6b of the third embodiment differs from the second embodiment mainly in that the strip-shaped steel plates 1 fixed to the wooden boards 2 of each unit are overlapped in an X-shape, and the overlapping portions are joined.

[0053] 9(c) shows a cross section of this joint in the wall thickness direction, and in this embodiment, the steel plates 1 of each unit are fastened and joined together by fasteners 7 consisting of high-strength bolts and nuts. Furthermore, working holes 28 are formed in the wooden boards 2 of each unit at positions corresponding to the above-mentioned joints.

[0054] The upper and lower ends of the steel plate 1 of each unit are joined to the connecting plates 31 of the upper and lower beams 3 as in Figure 1(b), and a working hole 27 similar to that in the second embodiment is formed in the lower end of the wooden board 2 of each unit at a position corresponding to the lower end of the steel plate 1 of that unit.

[0055] The construction method of the earthquake-resistant wall 6b is basically the same as that of the second embodiment, but in this embodiment, after each unit is erected, the overlapping parts of the steel plates 1 of each unit are fastened with fasteners 7 through the work holes 28. After the work, the work holes 28 are closed with a plugging material such as a wooden plug.

[0056] In the third embodiment, too, a steel plate 1 arranged from the upper end to the lower end of the earthquake-resistant wall 6b is joined to the connecting plates 31 of the upper and lower beams 3, and the steel plate 1 is sandwiched between a pair of wooden boards 2 from the front and back and pressed against the steel plate 1 from the front and back, thereby achieving the same effect as in the first embodiment.

[0057] In the third embodiment, the overlapping portions of the steel plates 1 of each unit are joined by fasteners 7. When a horizontal shear force occurs in the frame due to an earthquake or the like, a compressive force occurs in one of the steel plates 1 of each unit, and a tensile force occurs in the other. However, by joining the steel plates 1 together as described above and fixing the one steel plate 1 to the other steel plate 1, the buckling length of the one steel plate 1 becomes the distance from the upper end or lower end of the steel plate 1 to the joint, which is shortened, and the buckling can be suppressed. This structure in which the steel plate 1 is less likely to buckle is particularly useful when the height of the earthquake-resistant wall 6b is large. If necessary, it is also possible to join a pair of steel plates 1 together by fasteners 7 with another steel plate sandwiched between them.

[0058] The third embodiment can also be applied to cases where the steel plates 1 and wooden boards 2 are not unitized as in the first embodiment, and in this case too, the overlapping parts of the steel plates 1 arranged in an X-shape can be fastened with fasteners 7 as shown in Fig. 10. The wooden boards 2 that are then erected can be made to hide the joints by forming notches 29 in advance on the surface facing the steel plate 1 to accommodate the joints.

[0059] Although the preferred embodiment of the present invention has been described above with reference to the accompanying drawings, the present invention is not limited to such an example. It is clear that a person skilled in the art can come up with various modified or altered examples within the scope of the technical ideas disclosed in this application, and it is understood that such modified or altered examples also belong to the technical scope of the present invention. [Explanation of symbols]

[0060] 1: Steel plate 2: Wood board 3: Beam 6, 6a, 6b: Earthquake-resistant walls 31: Joint plate

Claims

1. A steel plate disposed from the upper end to the lower end of the seismic wall; A pair of wooden boards arranged to sandwich the steel plate from the front and back; Equipped with The upper and lower ends of the steel plate are bolted to connecting plates protruding from the upper and lower frame members, The pair of wooden boards are placed on the lower frame member with their lower ends in contact with each other, A notch is formed on the surface of the lower end of the pair of wooden boards facing the steel plate, and a joint between the lower end of the steel plate and the joint plate protruding from the lower frame material is accommodated in the notch, A seismic wall structure characterized in that the surfaces of the pair of wooden boards facing the steel plate on which the notches are not formed are joined so as to be pressed against the steel plate.

2. The earthquake-resistant wall structure described in Claim 1, further characterized in that a notch is formed in the steel plate side surface of the upper ends of the pair of wooden boards, and the joint between the upper end of the steel plate and the connecting plate protruding from the upper framing material is contained within the notch.

3. 3. The earthquake-resistant wall structure according to claim 1, wherein a plurality of said steel plates are arranged so that they partially overlap each other.

4. 4. The earthquake-resistant wall structure according to claim 3, wherein a plurality of said steel plates are arranged overlapping each other in an X-shape, and said steel plates are joined together at the overlapping portions.

5. A method for constructing a seismic wall having a pair of wood boards and a steel plate, comprising the steps of: A step (a) of erecting a steel plate extending from the upper end to the lower end of the seismic wall between upper and lower frame members and bolting the upper and lower ends of the steel plate to connecting plates protruding from the upper and lower frame members; A step (b) of placing a pair of wood boards so as to sandwich the steel plate from the front and rear and joining the pair of wood boards so as to press the pair of wood boards against the steel plate; Equipped with A notch is formed on the surface of the lower end of the pair of wooden boards facing the steel plate, In step (b), the pair of wooden boards are placed on the lower frame member with their lower ends in contact with each other, and the joint between the lower end of the steel plate and the joint plate protruding from the lower frame member is accommodated in the notch; A method for constructing an earthquake-resistant wall, comprising joining the pair of wooden boards by pressing the surfaces of the pair of wooden boards facing the steel plate on which the notches are not formed against the steel plate.

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