Shear wall panel connection structure

Abstract

To provide a proof stress wall panel connection structure that can absorb a horizontal force at a junction without damaging a structural skeleton such as a beam, and can exchange a member deformed by absorbing the horizontal force without removing a proof stress wall panel.SOLUTION: Proof stress wall panel connection structures 1a, 1b comprise proof stress wall panels 3, fixed plates 5, 8, 32 formed by protruding from top and bottom edges of the proof stress wall panels 3, protruding plates 6, 9, 34 protruding from a horizontal surface of a structural member and abutted to the fixed plates 5, 8, 32, and connection members 7, 10, 35 fixed to the fixed plates 5, 8, 32 and the protruding plates 6, 9, 34 from an out-of-plane direction of the proof stress wall panels 3. The connection members 7, 10, 35 can be plastically deformed by horizontal forces transmitted from the proof stress wall panels 3 and detachably fixed to the fixed plates 5, 8, 32 and the protruding plates 6, 9, 34.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bearing wall panel connection structure for installing bearing wall panels that bear the horizontal load of a building. [Background technology]

[0002] By using solid, highly rigid wooden panels such as cross-laminated timber (CLT) as load-bearing walls, it is possible to reduce the amount of load-bearing wall while ensuring the earthquake resistance of the building and increasing the design freedom, such as by providing large openings around the perimeter of the building. However, load-bearing wall panels such as cross-laminated timber have the problem that the load-bearing wall panels themselves are almost unable to deform, and so forces are concentrated at the joints with the structural frame such as the foundation, beams, and floors.

[0003] It is known that the metal joints that join the load-bearing wall panels to the structural framework such as foundations, beams, and floors are given deformation capability to absorb horizontal forces applied to the building due to earthquakes, etc. For example, Patent Document 1 describes a configuration in which a yieldable metal joint is provided between a wooden load-bearing wall panel and a wooden beam, and the horizontal forces applied to the load-bearing wall panel are absorbed by the deformation of the metal joint. Patent Documents 2 and 3 describe a load-bearing wall panel with a notch formed in the upper or lower corner, in which a metal joint fixed by an anchor driven into the structural framework such as a beam is placed in the notch and joined to the load-bearing wall panel in a deformable manner. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-196669 A [Patent Document 2] JP 2018-162602 A [Patent Document 3] Patent Publication No. 2022-15240 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when a load-bearing wall panel abuts against a structural frame such as a beam, even if the horizontal force is absorbed by the deformation of the metal joints, the corners of the load-bearing wall panel or the metal joints themselves may sink into the structural frame, causing damage to the structural frame. Also, when the metal joints deform to absorb the horizontal force applied to the building, in order to replace them, it is necessary to remove the load-bearing wall panel from the structural frame, replace the metal joints, and then reinstall the load-bearing wall panel.

[0006] Therefore, the present invention aims to provide a load-bearing wall panel connection structure that can absorb horizontal forces at the joints without damaging structural members such as beams, and that can replace members that have been deformed due to absorbing horizontal forces without having to remove the load-bearing wall panel. [Means for solving the problem]

[0007] The load-bearing wall panel connection structure of the present invention comprises a load-bearing wall panel formed in a rectangular flat plate shape and bearing the horizontal load-bearing force of a building, a fixing plate formed to protrude from the upper end or lower end of the load-bearing wall panel, a protruding plate protruding vertically from the horizontal surface of a structural member of the building and abutting against the protruding end of the fixing plate to be flush with the fixing plate, and a connecting member fixed to the fixing plate and the protruding plate from the out-of-plane direction of the load-bearing wall panel to connect the fixing plate and the protruding plate, the connecting member being plastically deformable by the horizontal force transmitted from the load-bearing wall panel and being detachably fixed to the fixing plate and the protruding plate. The connecting member includes a rectangular joint plate that contacts the fixed plate and the protruding plate and is joined to each plate with a bolt and a nut, and a frame plate that is formed on the periphery of the joint plate in a flat shape perpendicular to the joint plate. It is characterized by the following.

[0008] The load-bearing wall panel connection structure of the present invention is as follows: The load-bearing wall panels are arranged one above the other, the structural member is a wooden beam formed between the two load-bearing wall panels, the fixing plate has a first fixing plate formed protruding downward from the lower end of the upper load-bearing wall panel and a second fixing plate formed protruding upward from the upper end of the lower load-bearing wall panel, the protruding plate has a first protruding plate protruding upward from the upper surface of the wooden beam and a second protruding plate protruding downward from the lower surface of the wooden beam, the connecting member has a first connecting member connecting the first fixing plate and the first protruding plate and a second connecting member connecting the second fixing plate and the second protruding plate, and the first protruding plate and the second protruding plate are connected by a penetrating connecting member that penetrates the wooden beam in the vertical direction. It is characterized by the following.

[0009] The load-bearing wall panel connection structure of the present invention is as follows: The present invention relates to a structural member that is provided with a structure having a rectangular flat plate-like structure, a load-bearing wall panel that bears the horizontal load-bearing force of a building, a fixing plate formed by protruding from the upper end or the lower end of the load-bearing wall panel, a protruding plate that protrudes vertically from the horizontal surface of a structural member of the building, is abutted against the protruding end of the fixing plate, and is flush with the fixing plate, and a connecting member that is fixed to the fixing plate and the protruding plate from the outside of the surface of the load-bearing wall panel and connects the fixing plate and the protruding plate, the connecting member being plastically deformable by the horizontal force transmitted from the load-bearing wall panel and being detachably fixed to the fixing plate and the protruding plate, the load-bearing wall panels being arranged vertically, and the structural member being the two upper and lower connecting members. A wooden beam formed between load-bearing wall panels, the fixing plate having a first fixing plate formed to protrude downward from the lower end of the upper load-bearing wall panel and a second fixing plate formed to protrude upward from the upper end of the lower load-bearing wall panel, the protruding plate having a first protruding plate protruding upward from the upper surface of the wooden beam and a second protruding plate protruding downward from the lower surface of the wooden beam, the connecting member having a first connecting member connecting the first fixing plate and the first protruding plate and a second connecting member connecting the second fixing plate and the second protruding plate, the first protruding plate and the second protruding plate being connected by a penetrating connecting member that penetrates the wooden beam in the vertical direction. It is characterized by the following.

[0010] The load-bearing wall panel connection structure of the present invention is characterized in that the penetrating connecting member has a cylindrical receiving portion fixed to either the first protruding plate or the second protruding plate, and an insertion portion fixed to the other of the first protruding plate or the second protruding plate and inserted into the receiving portion, and the receiving portion and the insertion portion are connected by a pin inserted into a horizontal hole formed in the wooden beam passing through the receiving portion and the insertion portion.

[0011] The load-bearing wall panel connection structure of the present invention is characterized in that the horizontal hole is formed to be larger in diameter than the pin, and a gap is formed between the horizontal hole and the pin.

[0012] The load-bearing wall panel connection structure of the present invention is characterized in that the fixing plate, the protruding plate, and the connecting member are made of steel having a predetermined fire resistance performance, the load-bearing wall panel is a wooden load-bearing wall panel, and a fire-resistant plate material is arranged between the load-bearing wall panel and the wooden beam.

[0013] The load-bearing wall panel connection structure of the present invention is characterized in that the structural member is made of reinforced concrete or steel, the protruding plate is fixed to the structural member and protrudes upward, the fixing plate protrudes from the lower end of the load-bearing wall panel and abuts against the protruding plate, and the connecting member connects the fixing plate and the protruding plate. Effect of the Invention

[0014] According to the present invention, the horizontal force concentrated at the joint between the wall panel and the structural member can be absorbed by the plastic deformation of the connection member connecting the fixed plate protruding from the upper or lower end of the wall panel and the protruding plate protruding from the horizontal surface of the structural member, and damage to the structural member can be suppressed, resulting in a building with high toughness against earthquake loads. In addition, since the connection member is detachably fixed to the fixed plate and the protruding plate from the outside of the surface of the wall panel, when the connection member is plastically deformed and maintenance such as replacement is required, only the connection member can be removed and replaced without removing the wall panel or the structural member from the building, and earthquake resistance can be maintained with relatively simple maintenance work.

[0015] According to the load-bearing wall panel connection structure of the present invention, the connection member comprises a rectangular connecting plate which abuts against the fixed plate and the protruding plate and is joined with bolts and nuts, and a frame plate which is formed in a flat shape perpendicular to the connecting plate at the periphery of the connecting plate. Therefore, the frame plate can suppress slip deformation of the connecting plate, and by making the hysteresis curve showing the relationship between the positive and negative repeated loads during an earthquake and the inter-layer displacement angle a bilinear type, a decrease in the energy absorption capacity of the connecting member can be prevented.

[0016] According to the load-bearing wall panel connection structure of the present invention, a wooden beam is formed as a structural member between the upper and lower load-bearing wall panels, and the first protruding plate and the second protruding plate are connected by a penetrating connecting material that penetrates the wooden beam in the vertical direction. Therefore, the horizontal force applied to the building is converted into vertical tensile and compressive forces at the lower corner of the upper load-bearing wall panel, and these tensile and compressive forces are transmitted to the lower load-bearing wall panel by the penetrating connecting material without passing through the wooden beam, so that a large load is not placed on the wooden beam and damage to the wooden beam can be prevented.

[0017] According to the load-bearing wall panel connection structure of the present invention, the penetrating connecting material has a tubular receiving portion and an insertion portion that is inserted into the receiving portion, and the receiving portion and the insertion portion are connected by a pin that is inserted into a horizontal hole formed in the wooden beam and penetrates through the receiving portion and the insertion portion.Therefore, the receiving portion of the penetrating connecting material is inserted from either the top or bottom of the wooden beam, and the insertion portion is inserted from the other side, and connected by the pin inside the wooden beam.Therefore, the first protruding plate and the second protruding plate can be easily fixed to the top and bottom surfaces of the wooden beam, and force can be transmitted from the upper load-bearing wall panel to the lower load-bearing wall panel without going through the wooden beam.

[0018] According to the load-bearing wall panel connection structure of the present invention, the horizontal hole is formed with a diameter larger than the diameter of the pin, and a gap is formed between the pin and the horizontal hole, so that the tensile or compressive force transmitted from the load-bearing wall panel to the penetrating connecting material is not transmitted at all to the wooden beam, thereby reliably preventing damage to the wooden beam.

[0019] According to the load-bearing wall panel connection structure of the present invention, the fixing plate, protruding plate and connection member are made of steel having a predetermined fire resistance, the load-bearing wall panel is a wooden load-bearing wall panel, and a fire-resistant plate material is arranged between the load-bearing wall panel and the wooden beam, so that the fire-resistant edge can be cut even while the load-bearing wall panel is made of a wooden beam and a wooden load-bearing wall panel.

[0020] According to the load-bearing wall panel connection structure of the present invention, the structural members are made of reinforced concrete or steel, the protruding plate is fixed to the structural member and protrudes upward, the fixed plate protrudes from the lower end of the load-bearing wall panel and is abutted against the protruding plate, and the connecting member connects the fixed plate and the protruding plate.Therefore, even when, for example, a load-bearing wall panel is installed on a foundation, or when a load-bearing wall panel is installed on the floor above which is made of reinforced concrete or steel, a connection structure for load-bearing wall panels that is highly tough and easy to maintain can be obtained. [Brief description of the drawings]

[0021] [Figure 1]A front view illustrating the state in which a load-bearing wall panel is fixed using a first load-bearing wall panel connection structure and a second load-bearing wall panel connection structure. [Diagram 2] A vertical cross-sectional view illustrating the state in which a load-bearing wall panel is fixed using a first load-bearing wall panel connection structure and a second load-bearing wall panel connection structure. [Diagram 3] FIG. 4 is a perspective view illustrating the shapes of first, second, and third fixing plates. [Figure 4] FIG. 2 is a partially omitted perspective view illustrating the overall configuration of a first load-bearing panel connection structure. [Diagram 5] 3 is an enlarged cross-sectional view of the portion α in FIG. 2 for explaining the overall configuration of the first load-bearing panel connection structure. [Figure 6] 11 is a perspective view for explaining the configuration of a first protruding plate, an upper contact plate, an insertion portion, a receiving portion, a lower contact plate, and a second protruding plate. FIG. [Figure 7] FIG. 4 is a perspective view illustrating the shapes of first, second, and third connecting members. [Figure 8] An exploded oblique view in which the wooden beams and load-bearing wall panels are omitted to illustrate the installation and removal of the first and second connection members in the first load-bearing wall panel connection structure. [Figure 9] 9 is a perspective view illustrating a state in which the first and second connection members are attached following the state shown in FIG. 8. [Figure 10] FIG. 4 is an enlarged cross-sectional view illustrating the arrangement of fire-resistant boards. [Figure 11] FIG. 2 is a partially omitted oblique view illustrating the overall configuration of the second load-bearing wall panel connection structure. [Figure 12] 3 is an enlarged cross-sectional view of the β portion of FIG. 2 for explaining the overall configuration of the second load-bearing panel connection structure. [Figure 13] An exploded oblique view in which the load-bearing wall panel is omitted to explain the installation and removal of the third connection member in the second load-bearing wall panel connection structure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of the load-bearing wall panel connection structure of the present invention will be described with reference to the drawings. In this embodiment, the building in which the load-bearing wall is formed using the load-bearing wall panel connection structures 1a and 1b is a wooden detached house whose framework is formed of wooden beams 2 and wooden columns. The building in the present invention is not limited to this embodiment, and may be an apartment building or various non-residential facilities. In addition, the present invention is preferably used in buildings in which wooden beams 2 are provided, but is not limited to wooden buildings, and can be used in buildings of various other structures such as steel frame construction, reinforced concrete construction, and steel-framed reinforced concrete construction.

[0023] 1 and 2, the load-bearing wall panel connection structures 1a and 1b of this embodiment include a first load-bearing wall panel connection structure 1a that connects upper and lower load-bearing wall panels 3 across a wooden beam 2, and a second load-bearing wall panel connection structure 1b that connects the load-bearing wall panel 3 onto a foundation 4. In the following, first, the first load-bearing wall panel connection structure 1a will be described. The first load-bearing wall panel connection structure 1a includes upper and lower load-bearing wall panels 3, a wooden beam 2 as a structural member sandwiched between the upper and lower load-bearing wall panels 3, a first fixing plate 5 formed by protruding downward from the lower end of the upper load-bearing wall panel 3, a first protruding plate 6 protruding upward from the upper surface of the wooden beam 2, a first connecting member 7 connecting the first fixing plate 5 and the first protruding plate 6, a second fixing plate 8 formed by protruding upward from the upper end of the lower load-bearing wall panel 3, a second protruding plate 9 protruding downward from the lower surface of the wooden beam 2, a second connecting member 10 connecting the second fixing plate 8 and the second protruding plate 9, and a through-hole connecting member 11 connecting the first protruding plate 6 and the second protruding plate 9. The first fixing plate 5 and the second fixing plate 8 in this embodiment correspond to the "fixing plate" in the present invention. The first protruding plate 6 and the second protruding plate 9 in this embodiment correspond to the "protruding plate" in the present invention. The first connecting member 7 and the second connecting member 10 in this embodiment correspond to the "connecting member" in the present invention.

[0024] The load-bearing wall panel 3 is a cross-laminated timber (CLT), and has slits 12 at the top and bottom, into which a fixing plate can be inserted. The load-bearing wall panel 3 may be disposed inside an exterior wall that separates the interior and exterior of a building, or may be disposed inside a wall erected inside a building, such as a boundary wall or a partition wall. The load-bearing wall panel 3 is not limited to a cross-laminated timber, and may be made of a wood material having high shear rigidity that can be used as a load-bearing wall panel, such as nail laminated timber (NLT). The wooden beam 2 is a square timber made of laminated timber, and in this embodiment, it is installed between columns (not shown) in the ceiling of the first floor. The wooden beam 2 has vertical circular holes 13 penetrating from the top to the bottom. Four circular holes 13 are formed at the position where the load-bearing wall panel 3 is to be installed. The wooden beam 2 also has horizontal holes 14 formed from one side to the other side. The horizontal holes 14 are provided so as to be perpendicular to the vertically formed circular holes 13, and three horizontal holes 14 are formed for each circular hole 13 in a line up in the vertical direction.

[0025] 3, the first fixing plate 5 and the second fixing plate 8 are thin steel plates formed into an L-shape and have multiple pin holes 15 for fixing to the load-bearing wall panel 3, and three bolt insertion holes 16 formed at the ends protruding from the load-bearing wall panel 3. The lower edge of the first fixing plate 5 and the upper edge of the second fixing plate 8 are each formed into a horizontal straight line.

[0026] As shown in Figures 4 and 5, the first fixing plate 5 is a plate fixed to the lower end of the upper floor load-bearing wall panel 3. The first fixing plate 5 is fixed to each of both corners of the lower end of the load-bearing wall panel 3. As shown in Figure 5, the first fixing plate 5 is inserted into a slit 12 formed in the lower end of the load-bearing wall panel 3. The first fixing plate 5 is fixed in a state in which a part of it protrudes downward from the lower end of the load-bearing wall panel 3 by a fastener 17 consisting of a drift pin penetrating the load-bearing wall panel 3 in the out-of-plane direction, a bolt, and a nut.

[0027] As shown in FIG. 6, the first protruding plate 6 is formed extending vertically on the upper surface abutment plate 19 that abuts on the upper surface of the wooden beam 2. The first protruding plate 6 has three bolt receiving holes 18 formed therein. The upper surface abutment plate 19 is formed below the first fixed plate 5, and the first protruding plate 6 protrudes from the upper surface abutment plate 19 at a position where it abuts the first fixed plate 5. The upper end edge of the first protruding plate 6 is formed in a horizontal straight line and abuts against the lower end edge of the first fixed plate 5. The upper surface abutment plate 19 is a horizontal flat plate and is disposed in abutment against the upper surface of the wooden beam 2. The lower surface of the upper surface abutment plate 19 is formed so that the insertion portion 20 of the through-hole connecting member 11 protrudes downward. The through-hole connecting member 11 is formed in a cylindrical shape having an insertion portion 20 and a receiving portion 21, and is connected by inserting the insertion portion 20 into the cylindrical receiving portion 21. The two insertion portions 20 protrude side by side from the lower surface of the upper surface abutment plate 19. The first protruding plate 6, the upper surface abutment plate 19, and the insertion portions 20 are formed integrally with one another.

[0028] The inserting portion 20 is formed in a cylindrical shape with a large diameter at the top and a smaller diameter at the bottom. Three connecting holes 22 are formed in the vertical direction at the bottom of the inserting portion 20. The receiving portion 21 is formed in a cylindrical shape into which the bottom of the inserting portion 20 can be inserted, and fixing holes 23 are formed at positions that match the three connecting holes 22 formed in the inserting portion 20. Two receiving portions 21 are formed protruding side by side from the top surface of the lower surface abutment plate 24. As shown in FIG. 4, the inserting portion 20 is inserted from the top into the circular hole 13 of the wooden beam 2, the receiving portion 21 is inserted from the bottom, the inserting portion 20 is inserted into the receiving portion 21 inside the wooden beam 2, and a pin 25 is inserted from the horizontal hole 14 formed on the side of the wooden beam 2, and the fixing hole 23 of the receiving portion 21 and the connecting hole 22 of the inserting portion 20 are connected by the pin 25. The pin 25 is a steel cylinder with a diameter of about 16 mm, and the connecting hole 22 of the insertion portion 20 and the fixing hole 23 of the receiving portion 21 are also formed with a diameter of about 16 mm. The horizontal hole 14 formed in the wooden beam 2 is formed with a diameter of about 30 mm, and a gap is formed between the outer periphery of the pin 25 and the inner periphery of the horizontal hole 14. Since the diameter of the horizontal hole 14 of the wooden beam 2 is larger than the diameter of the pin 25, a gap is formed between the pin 25 and the horizontal hole 14. Therefore, the tensile force or compressive force transmitted from the load-bearing wall panel 3 to the penetrating connecting member 11 is not transmitted at all to the wooden beam 2, and damage to the wooden beam 2 can be reliably prevented.

[0029] The lower contact plate 24 is a horizontal flat plate, and is placed in contact with the lower surface of the wooden beam 2. On the lower surface of the lower contact plate 24, a second protruding plate 9 is formed so as to extend as far as possible, as shown in Figs. 4 and 6. The second protruding plate 9 is formed with three bolt receiving holes 18. The lower edge of the second protruding plate 9 is formed in a horizontal straight line, and is butted against the upper edge of the second fixing plate 8.

[0030] The second fixing plate 8 is a plate fixed to the upper end of the lower floor load-bearing wall panel 3. As shown in Fig. 5, the second fixing plate 8 is inserted into a slit 12 formed in the upper end of the load-bearing wall panel 3. The second fixing plate 8 is fixed in a state in which a part of it protrudes upward from the upper end of the load-bearing wall panel 3 by a fastener 17 consisting of a drift pin penetrating the load-bearing wall panel 3 in the out-of-plane direction, a bolt, and a nut.

[0031] As shown in FIG. 7, the first connection member 7 and the second connection member 10 have a rectangular connection plate 27 that abuts against the fixed plates 5, 8 and the protruding plates 6, 9 and is joined to each plate with a high-strength bolt 26 and a nut, and a frame plate 28 formed in a flat plate shape perpendicular to the connection plate 27 on the periphery of the connection plate 27, and are formed in a box shape that opens toward the outside of the surface of the load-bearing wall panel 3. As shown in FIG. 8, the first connection member 7 has six connection holes 29 formed in the connection plate 27. The connection holes 29 are formed in two rows, one above the other, three by three in the horizontal direction, and the upper three connection holes 29 are aligned with the bolt insertion holes 16 of the first fixed plate 5, and the lower three connection holes 29 are aligned with the bolt receiving holes 18 of the first protruding plate 6. As shown in Figure 9, the first connecting member 7 has a joining plate 27 abutting the front and back surfaces of the first fixed plate 5 and the first protruding plate 6, respectively, and joins the first fixed plate 5 and the first protruding plate 6 by inserting high-strength bolts 26 into the upper joining holes 29 and bolt insertion holes 16, respectively, and tightening them with nuts, and by inserting high-strength bolts 26 into the lower joining holes 29 and bolt receiving holes 18, respectively, and tightening them with nuts.

[0032] Further, the second connecting member 10 has six joining holes 29 similar to those of the first connecting member 7 formed in the joining plate 27. As shown in FIG. 9, the second connecting member 10 has the joining plate 27 abutting against the front and back surfaces of the second fixing plate 8 and the second protruding plate 9, respectively. High-strength bolts 26 are inserted into the upper joining holes 29 and bolt receiving holes 18 and tightened with nuts, and high-strength bolts 26 are inserted into the lower joining holes 29 and bolt insertion holes 16 and tightened with nuts to join the second fixing plate 8 and the second protruding plate 9.

[0033] The horizontal force applied to the building is converted into vertical tensile and compressive forces at the lower end corner of the upper shear wall panel 3. However, as described above, the first protruding plate 6 and the second protruding plate 9 are connected by the through connecting member 11 passing through the wooden beam 2 in the vertical direction. Thus, the tensile and compressive forces are transmitted to the lower shear wall panel 3 by the through connecting member 11 without passing through the wooden beam 2, so that a large load is not applied to the wooden beam 2 and damage to the wooden beam 2 can be prevented.

[0034] The first connecting member 7 and the second connecting member 10 are made of steel and are formed to have a lower rigidity than the shear wall panel 3, and are formed to be able to absorb the horizontal force transmitted from the shear wall panel 3 by plastic deformation. The first connecting member 7 and the second connecting member 10 have a rectangular joining plate 27 and a frame plate 28 formed at the periphery of the joining plate 27. Thus, the slip deformation of the joining plate 27 is suppressed by the frame plate 28, and the hysteresis curve showing the relationship between the positive and negative repeated loads and the inter-story drift angle during an earthquake can be made bilinear, and a decrease in the energy absorption capacity of the first connecting member 7 and the second connecting member 10 can be prevented.

[0035] Furthermore, the first connecting member 7 and the second connecting member 10 can be removed from the structural frame without interfering with the wooden beam 2 or the load-bearing wall panel 3 by removing the high-strength bolts 26 and nuts and pulling them out in the out-of-plane direction of the load-bearing wall panel 3. Therefore, even if the first connecting member 7 and the second connecting member 10 are plastically deformed due to an earthquake or the like and require maintenance such as replacement, it is possible to remove and replace only the connecting members without removing the load-bearing wall panel 3 or structural members from the building, and earthquake resistance can be maintained with relatively simple maintenance work.

[0036] The first fixing plate 5, the second fixing plate 8, the first protruding plate 6, the second protruding plate 9, the first connecting member 7, and the second connecting member 10 are made of steel having higher fire resistance than the wooden beam 2 and the load-bearing wall panel 3. Here, the "predetermined fire resistance" in the present invention means a fire resistance that satisfies the requirements of laws and regulations in this embodiment, for example, a fire spread suppression performance for one hour. The first connecting member 7 is arranged between the load-bearing wall panel 3 and the wooden beam 2 of the upper floor, and the second connecting member 10 is arranged between the load-bearing wall panel 3 and the wooden beam 2 of the lower floor, and a gap is formed between the load-bearing wall panel 3 and the wooden beam 2, respectively. Then, as shown in FIG. 10, a floor material of a fire-resistant plate material 30 is formed between the load-bearing wall panel 3 and the wooden beam 2 of the upper floor by cutting out the position where the first connecting member 7 is arranged, and a ceiling material of a fire-resistant plate material 30 is formed between the load-bearing wall panel 3 and the wooden beam 2 of the lower floor by cutting out the position where the second connecting member 10 is arranged. Fireproof covering materials 31 are disposed between the fireproof boards 30 and the first connecting member 7 and between the fireproof boards 30 and the second connecting member 10. In this manner, the fireproof boards 30 are disposed without directly connecting the wooden beams 2 and the wooden load-bearing wall panels 3, so that fireproof edges can be cut while maintaining a structure using the wooden beams 2 and the wooden load-bearing wall panels 3, and a fireproof line can be provided between the upper and lower floors.

[0037] Next, a description will be given of a second load-bearing wall panel connection structure 1b that connects a load-bearing wall panel 3 onto a foundation 4. The second load-bearing wall panel connection structure 1b comprises a load-bearing wall panel 3 of a lower floor, a third fixing plate 32 formed so as to protrude downward from the lower end of the load-bearing wall panel 3, a panel fixing metal fitting 33 that is placed on the foundation 4 as a structural member, a third protruding plate 34 that protrudes upward from the panel fixing metal fitting 33, and a third connecting member 35 that connects the third fixing plate 32 and the third protruding plate 34.

[0038] The third fixing plate 32 has the same configuration as the first fixing plate 5 and the second fixing plate 8 in the first load-bearing wall panel connection structure 1a described above, and the third connecting member 35 has the same configuration as the first connecting member 7 and the second connecting member 10 in the first load-bearing wall panel connection structure 1a described above, so detailed explanations are omitted. The load-bearing wall panel 3 has the same configuration as the first load-bearing wall panel connection structure 1a described above, so detailed explanations are omitted. The third fixing plate 32 in this embodiment corresponds to the "fixing plate" in the present invention. The third protruding plate 34 in this embodiment corresponds to the "protruding plate" in the present invention. The third connecting member 35 in this embodiment corresponds to the "connecting member" in the present invention.

[0039] A third fixing plate 32 is inserted and fixed into a slit 12 formed in the lower end of the bearing wall panel 3. As shown in Fig. 3, the third fixing plate 32 is a thin steel plate formed in an L-shape, and has a number of pin holes 15 for fixing to the bearing wall panel 3, and three bolt insertion holes 16 formed in the end portion protruding from the bearing wall panel 3. The lower edge of the third fixing plate 32 is formed in a horizontal straight line.

[0040] As shown in Figures 11 and 12, the third fixing plate 32 is a plate fixed to the lower end of the lower floor load-bearing wall panel 3. The third fixing plate 32 is fixed to each of both corners of the lower end of the load-bearing wall panel 3. As shown in Figure 12, the third fixing plate 32 is inserted into a slit 12 formed in the lower end of the load-bearing wall panel 3. The third fixing plate 32 is fixed in a state in which a part of it protrudes downward from the lower end of the load-bearing wall panel 3 by a fastener 17 consisting of a drift pin penetrating the load-bearing wall panel 3 in the out-of-plane direction, a bolt, and a nut.

[0041] 13, the third protruding plate 34 is formed to extend upward from the upper surface of the panel fixing hardware 33 fixed onto the foundation 4. Three bolt receiving holes 18 are formed in the third protruding plate 34. The panel fixing hardware 33 is fixed to the upper surface of the foundation 4 by anchor bolts (not shown) that are embedded and fixed into the foundation 4. The upper edge of the third protruding plate 34 is formed in a horizontal straight line and abuts against the lower edge of the third fixing plate 32.

[0042] As shown in Fig. 13, the third connection member 35 has a rectangular connection plate 27 that abuts against the third fixing plate 32 and the third protruding plate 34 and is joined to each plate with a high-strength bolt 26 and a nut, and a frame plate 28 that is formed in a flat plate shape perpendicular to the connection plate 27 on the periphery of the connection plate 27, and is formed in a box shape that opens toward the outside of the surface of the load-bearing wall panel 3. As shown in Fig. 13, the third connection member 35 has the connection plate 27 abutting against the front and back surfaces of the third fixing plate 32 and the third protruding plate 34, respectively, and the high-strength bolts 26 are inserted into the upper connection holes 29 and the bolt insertion holes 16, respectively, and fastened with nuts, and the high-strength bolts 26 are inserted into the lower connection holes 29 and the bolt receiving holes 18, respectively, and fastened with nuts, thereby joining the third fixing plate 32 and the third protruding plate 34.

[0043] The third connection member 35 is made of steel and has a lower rigidity than the bearing wall panel 3, and is formed so as to be able to absorb the horizontal force transmitted from the bearing wall panel 3 by plastic deformation. In this way, the second bearing wall panel connection structure 1b of this embodiment can absorb the horizontal force concentrated at the joint between the bearing wall panel 3 and the foundation 4 by the plastic deformation of the third connection member 35, and can form a building with high toughness against earthquake loads by suppressing damage to the bearing wall panel 3 and the foundation 4. And, since the shape of the third connection member 35 is a steel box shape with a frame plate 28 provided on the periphery of the rectangular joint plate 27, the slip deformation of the joint plate 27 is suppressed by the frame plate 28, and the hysteresis curve showing the relationship between the positive and negative repeated loads and the story displacement angle during an earthquake can be made bilinear, and the decrease in the energy absorption capacity of the third connection member 35 can be prevented.

[0044] Moreover, the third connecting member 35 can be removed from the structural frame without interfering with the load-bearing wall panel 3 or the foundation 4 by removing the high-strength bolts 26 and nuts and pulling it out in the out-of-plane direction of the load-bearing wall panel 3. Therefore, when the third connecting member 35 undergoes plastic deformation and requires maintenance such as replacement, only the third connecting member 35 can be removed and replaced without removing the load-bearing wall panel 3 from the building, and earthquake resistance can be maintained with relatively simple maintenance work.

[0045] It should be noted that the second shear wall panel connection structure 1b connects the shear wall panel 3 onto the foundation 4, but the structural member connecting the lower end of the shear wall panel 3 is not limited to the foundation 4, as long as it is made, for example, of reinforced concrete or steel and has the rigidity to withstand the shear force concentrated at the joint with the lower end of the shear wall panel 3 during an earthquake. For example, even if the lower floor is made of reinforced concrete or steel and a shear wall panel 3 is installed on the floor above, the shear wall panel connection structures 1a, 1b, which are highly tough and easy to maintain, can be used.

[0046] It goes without saying that the embodiment of the present invention is not limited to the above-mentioned embodiment, and can be modified as appropriate without departing from the scope of the concept of the present invention. [Industrial Applicability]

[0047] The load-bearing wall panel connection structures 1a and 1b according to the present invention are suitable as a structure for installing a load-bearing wall panel 3 in, for example, a wooden house. [Explanation of symbols]

[0048] 1a, 1b Shear wall panel connection structure 2 wooden beams 3. Load-bearing wall panels 4 Basics 5 First Fixation Plate 6 First protruding plate 7 First connecting member 8 Second Fixation Plate 9 Second protruding plate 10 Second connecting member 11 Through connection 14 horizontal hole 20 Insertion section 21 Reception Department 27 Joint plate 28 Frame board 30 Fireproof board material 32 Fixing plate 34 Protruding plate 35 Connection parts

Claims

1. A load-bearing wall panel formed in a rectangular flat plate shape to bear the horizontal load of the building; A fixing plate formed by protruding from the upper end or the lower end of the load-bearing wall panel; A protruding plate that protrudes vertically from the horizontal plane of the structural member of the building and is abutted against the protruding end of the fixing plate so as to be flush with the fixing plate; A connecting member that is fixed to the fixing plate and the protruding plate from an outer surface direction of the bearing wall panel and connects the fixing plate and the protruding plate; Equipped with The connecting member is plastically deformable by a horizontal force transmitted from the bearing wall panel, and is removably fixed to the fixing plate and the protruding plate; A load-bearing wall panel connection structure characterized in that the connecting member comprises a rectangular connecting plate that abuts against the fixed plate and the protruding plate and is joined to each plate with bolts and nuts, and a frame plate formed in a flat shape perpendicular to the connecting plate around the periphery of the connecting plate.

2. The load-bearing wall panels are arranged one above the other, The structural member is a wooden beam formed between the two upper and lower load-bearing wall panels, The fixing plate has a first fixing plate formed by protruding downward from a lower end of the upper bearing wall panel, and a second fixing plate formed by protruding upward from an upper end of the lower bearing wall panel, The protruding plate includes a first protruding plate protruding upward from an upper surface of the wooden beam and a second protruding plate protruding downward from a lower surface of the wooden beam, the connecting member includes a first connecting member that connects the first fixing plate and the first protruding plate, and a second connecting member that connects the second fixing plate and the second protruding plate, The load-bearing wall panel connection structure according to claim 1, characterized in that the first protruding plate and the second protruding plate are connected by a penetrating connecting member that penetrates the wooden beam in the vertical direction.

3. A load-bearing wall panel formed in a rectangular flat plate shape to bear the horizontal load of the building; A fixing plate formed by protruding from the upper end or the lower end of the load-bearing wall panel; A protruding plate that protrudes vertically from the horizontal plane of the structural member of the building and is abutted against the protruding end of the fixing plate so as to be flush with the fixing plate; A connecting member that is fixed to the fixing plate and the protruding plate from an outer surface direction of the bearing wall panel and connects the fixing plate and the protruding plate; Equipped with The connecting member is plastically deformable by a horizontal force transmitted from the bearing wall panel, and is removably fixed to the fixing plate and the protruding plate; The load-bearing wall panels are arranged one above the other, The structural member is a wooden beam formed between the two upper and lower load-bearing wall panels, The fixing plate has a first fixing plate formed by protruding downward from a lower end of the upper bearing wall panel, and a second fixing plate formed by protruding upward from an upper end of the lower bearing wall panel, The protruding plate includes a first protruding plate protruding upward from an upper surface of the wooden beam and a second protruding plate protruding downward from a lower surface of the wooden beam, the connecting member includes a first connecting member that connects the first fixing plate and the first protruding plate, and a second connecting member that connects the second fixing plate and the second protruding plate, A load-bearing wall panel connection structure characterized in that the first protruding plate and the second protruding plate are connected by a penetrating connecting material that penetrates the wooden beam in the vertical direction.

4. The through-connecting member has a cylindrical receiving portion fixed to one of the first protruding plate and the second protruding plate, and an insertion portion fixed to the other of the first protruding plate and the second protruding plate and inserted into the receiving portion, The present invention relates to a structure for connecting a load-bearing wall panel to a load-bearing wall panel.

5. 5. The structure for connecting load-bearing wall panels according to claim 4, characterized in that the horizontal hole is formed with a diameter larger than that of the pin, and a gap is formed between the horizontal hole and the pin.

6. The fixing plate, the protruding plate, and the connecting member are made of steel having a predetermined fire resistance performance, The load-bearing wall panel is a wooden load-bearing wall panel, 4. The structure for connecting load-bearing wall panels according to claim 2 or 3, characterized in that a fireproof plate is disposed between the load-bearing wall panel and the wooden beam.

7. The structural members are made of reinforced concrete or steel; the protruding plate is fixed to the structural member and protrudes upward; The fixing plate protrudes from the lower end of the bearing wall panel and abuts against the protruding plate, 2. The load-bearing wall panel connection structure according to claim 1, wherein the connection member connects the fixed plate and the protruding plate.

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