seismic wall

Abstract

To provide an earthquake-resisting wall capable of being easily restored after a large earthquake while securing earthquake-resisting performance.SOLUTION: An earthquake-resistant wall is equipped with a wall plate and a connecting device for connecting the wall plate to an installation target, and the connecting device comprises a first connecting member connected to the wall plate, a second connecting member connected to the installation point of the wall plate, and a damper member which is detachably provided between the first connecting member and the second connecting member and which is deformed by yielding to a load greater than a predetermined load.SELECTED DRAWING: Figure 1

Description

Technical Field

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[0001] The present invention relates to a seismic wall.

Background Art

[0002] There is known a wooden seismic wall that secures seismic performance using a plate-like body made of laminated and integrated wood (see, for example, Patent Document 1). The wooden seismic wall described in Patent Document 1 includes a pair of wooden boards having notch portions at four corners and arranged opposite to each other, and a steel plate disposed between the pair of wooden boards and having a corner portion that is exposed from the notch portion and connected to a connection target.

Prior Art Documents

Patent Documents

[0003] <000001​​​​​​​​​​​​​​​​​​​​​​​One aspect of the present invention is an earthquake-resistant wall comprising a wall panel and a connecting device for connecting the wall panel and an object to be installed, wherein the connecting device comprises a first connecting member connected to the wall panel, a second connecting member connected to the installation location of the wall panel, and a damper member detachably provided between the first connecting member and the second connecting member, which yields and deforms in the event of a load exceeding a predetermined amount. [Effects of the Invention]

[0007] According to the present invention, it is possible to ensure seismic resistance while facilitating recovery after a major earthquake. [Brief explanation of the drawing]

[0008] [Figure 1] This is a front view showing the configuration of a wooden seismic wall according to the first embodiment. [Figure 2] This is an exploded perspective view showing the configuration of a wooden seismic wall according to the first embodiment. [Figure 3] This is a perspective view showing the configuration of a wooden seismic wall according to the first embodiment. [Figure 4] This is a front view showing the configuration of the connection device according to the first embodiment. [Figure 5] This is a front view showing the configuration of a wooden seismic wall equipped with a rigidity adjustment beam according to the first embodiment. [Figure 6] This is a front view showing the configuration of a wooden seismic wall according to the second embodiment. [Figure 7] This is an exploded perspective view showing the configuration of a wooden seismic wall according to the second embodiment. [Figure 8] This is a perspective view showing the configuration of a wooden seismic wall according to the second embodiment. [Figure 9] This is a front view showing the configuration of a wooden seismic wall according to the third embodiment. [Figure 10] This is an exploded perspective view showing the configuration of a wooden seismic wall according to the third embodiment. [Modes for carrying out the invention]

[0009] The embodiments of the wooden seismic wall according to the present invention will be described below with reference to the drawings. Buildings deform during earthquakes. Wooden seismic walls installed in buildings are subjected to loads in different directions depending on their installation location during an earthquake. The following embodiments illustrate wooden seismic walls equipped with dampers that function in response to loads occurring in different directions.

[0010] [First Embodiment] As shown in Figure 1, the wooden seismic wall 1 (seismic wall) is fixed to a connection target such as a steel beam on the building side. The wooden seismic wall 1 has, for example, a wooden board 2 formed in the shape of a rectangular plate. The wooden board 2 is formed from, for example, a CLT (Cross Laminated Timber) member. A CLT member is a wood material formed by bonding and laminating wood to have sufficient strength and fire resistance. In the building, a first steel beam T1 is fixed to the ceiling side, and a second steel beam T2 is fixed to the floor side. The wooden board 2 is placed between the first steel beam T1 and the second steel beam T2.

[0011] The upper part of the wooden board 2 is fixed to the first steel beam T1, which is the installation target and is located above it, via a fixing member 3. The fixing member 3 is fixed to the first steel beam T1 and the wooden board 2, for example, by bolts and nuts. The lower part of the wooden board 2 is connected to the second steel beam T2, which is the installation target and is located below it, via a connecting device 4. That is, the upper part of the wooden board 2 is fixed to the first steel beam T1 by the fixing member 3, and the lower part is fixed to the second steel beam T2 by the connecting device 4. The wooden seismic wall 1 according to the first embodiment is configured to prevent the wooden board 2 from breaking when subjected to horizontal loads that occur during an earthquake.

[0012] As shown in Figure 2, the connecting device 4 comprises a first connecting member 5 connected to the wooden board 2, a second connecting member 7 connected to the second steel beam T2, and a damper member 6 provided between the first connecting member 5 and the second connecting member 7.

[0013] The first connecting member 5 is formed of, for example, a steel plate. The first connecting member 5 is formed in a rectangular plate shape, for example. The first connecting member 5 is arranged to stand upright in the vertical direction (Z-axis direction in the figure). When viewed along the depth direction (Y-axis direction in the figure), the first connecting member 5 is formed such that the length in the width direction (X-axis direction in the figure) is longer than the height in the vertical direction. In the upper half region of the first connecting member 5, a plurality of first guide holes 5H1 are arranged along the width direction. The first guide holes 5H1 are formed as, for example, long holes along the vertical direction.

[0014] The upper side of the first connecting member 5 is inserted into, for example, a storage hole (not shown) formed in the lower part of the wooden board 2. The storage hole forms a space in which the upper half region of the first connecting member 5 is stored. In the lower part of the wooden board 2, a plurality of through holes 2H are provided when viewed in the depth direction. The plurality of through holes 2H are arranged along the width direction. The plurality of through holes 2H are provided corresponding to the positions of the plurality of first guide holes 5H1 of the first connecting member 5.

[0015] A first pin P1 is inserted into each through hole 2H. The first pin P1 is also inserted into the first guide hole 5H1 of the first connecting member 5 inserted into the lower part of the wooden board 2 through the through hole 2H. The first pin P1 contacts the lower end of the first guide hole 5H1 and transmits the load of the wooden board 2 to the connecting device 4. The first connecting member 5 is connected to the lower part of the wooden board 2 so as to be movable upward. The movable range of the first connecting member 5 is the width along the vertical direction of the first guide hole 5H1.

[0016] In the lower half region of the first connecting member 5, a rectangular notch 5K is formed. The notch 5K is formed such that the longitudinal direction is the width direction. On both sides along the width direction of the notch 5K, a pair of second guide holes 5H3 are provided. The second guide holes 5H3 are formed as long holes along the width direction. With the above configuration, the lower part of the first connecting member 5 is connected to the damper member 6.

[0017] The damper member 6 is formed, for example, as a plate-shaped member. The damper member 6 is formed, for example, of a steel plate. The damper member 6 is arranged to stand upright in the vertical direction. The damper member 6 is detachably provided between the first connecting member 5 and the second connecting member 7. The damper member 6 is connected to the second connecting member 7 by bolts B and nuts N. The damper member 6 includes, for example, an upper connecting portion 6A provided above, a lower connecting portion 6B provided below, and a deformation portion 6C provided between the upper connecting portion 6A and the lower connecting portion 6B.

[0018] The upper connecting portion 6A is formed, for example, in a rectangular plate shape. The longitudinal direction of the upper connecting portion 6A is arranged along the width direction. The short side direction of the upper connecting portion 6A is arranged along the vertical direction. The upper connecting portion 6A is arranged, for example, to be fitted into the notch portion 5K. A deformation portion 6C is provided at the lower portion of the upper connecting portion 6A.

[0019] The deformation portion 6C is formed in a plate shape. The deformation portion 6C is formed, for example, such that the width decreases from the vertical direction toward the central portion. A lower connecting portion 6B is provided at the lower portion of the deformation portion 6C.

[0020] The lower connecting portion 6B is formed, for example, in a rectangular plate shape. The longitudinal direction of the lower connecting portion 6B is arranged along the width direction. The short side direction of the lower connecting portion 6B is arranged along the vertical direction. The lower connecting portion 6B is arranged to be overlapped with the second connecting member 7. A plurality of fourth bolt holes 6H2 are provided in the lower connecting portion 6B along the width direction. The second connecting member 7 is arranged below the lower connecting portion 6B.

[0021] The second connecting member 7 is provided on the upper surface of the second steel beam T2. The second connecting member 7 is made of steel plate. The second connecting member 7 is fixed to the wooden board installation location on the upper surface of the second steel beam T2, for example, using a fixing method such as welding. The second connecting member 7 is arranged upright along the vertical direction. The second connecting member 7 is formed, for example, in the shape of a rectangular plate. The longitudinal direction of the second connecting member 7 is arranged along the width direction. The longitudinal direction of the second connecting member 7 is formed to be longer than the width of the lower connecting portion 6B. The short direction of the second connecting member 7 is arranged along the vertical direction.

[0022] The second connecting member 7 is provided with a plurality of fifth bolt holes 7H along its width. The first connecting member 5, damper member 6, and second connecting member 7 described above are sandwiched between a pair of opposing first connecting plates 8 and second connecting plates 9.

[0023] The first connecting plate 8 is positioned on one side in the depth direction of the first connecting member 5, the damper member 6, and the second connecting member 7. This one side is, for example, the -Y direction side with respect to the first connecting member 5, the damper member 6, and the second connecting member 7. The second connecting plate 9 is positioned on the other side in the depth direction of the first connecting member 5, the damper member 6, and the second connecting member 7. This other side is, for example, the +Y direction side with respect to the first connecting member 5, the damper member 6, and the second connecting member 7.

[0024] The first connecting plate 8 is formed, for example, in the shape of a rectangular plate. The first connecting plate 8 is made of steel plate. The first connecting plate 8 is arranged upright along the vertical direction. A plurality of sixth bolt holes 8H1 are provided in the lower part of the first connecting plate 8. The plurality of sixth bolt holes 8H1 are arranged along the width direction. The plurality of sixth bolt holes 8H1 are arranged in accordance with the positions of the plurality of fifth bolt holes 7H of the second connecting member 7.

[0025] Multiple seventh bolt holes 8H2 are provided above the multiple sixth bolt holes 8H1. The multiple seventh bolt holes 8H2 are arranged along the width direction. The multiple seventh bolt holes 8H2 are arranged in correspondence with the multiple fourth bolt holes 6H2 of the lower connecting portion 6B of the damper member 6. A pair of first pin holes 8H3 are provided on the upper part of the first connecting plate 8. The pair of first pin holes 8H3 are arranged in correspondence with the positions of the pair of second guide holes of the first connecting member 5. The pair of first pin holes 8H3 are, for example, located in the center of the pair of second guide holes.

[0026] The second connecting plate 9 is formed, for example, in the shape of a rectangular plate. The second connecting plate 9 is made of steel plate. The second connecting plate 9 is arranged upright along the vertical direction. A plurality of eight bolt holes 9H1 are provided in the lower part of the second connecting plate 9. The plurality of eight bolt holes 9H1 are arranged along the width direction. The plurality of eight bolt holes 9H1 are arranged in correspondence with the positions of the plurality of fifth bolt holes 7H of the second connecting member 7.

[0027] Multiple ninth bolt holes 9H2 are provided above the multiple eighth bolt holes 9H1. The multiple ninth bolt holes 9H2 are arranged along the width direction. The multiple ninth bolt holes 9H2 are arranged in correspondence with the multiple fourth bolt holes 6H2 of the lower connecting portion 6B of the damper member 6. A pair of second pin holes 9H3 are provided on the upper part of the second connecting plate 9. The pair of second pin holes 9H3 are arranged in correspondence with the positions of the pair of second guide holes of the first connecting member 5. The pair of second pin holes 9H3 are, for example, located in the center of the pair of second guide holes.

[0028] The first connecting plate 8 and the second connecting plate 9 work together to connect the second connecting member 7 and the lower connecting portion 6B of the damper member 6. Bolts B are inserted through the sixth bolt hole 8H1, the fifth bolt hole 7H, and the eighth bolt hole 9H1. Bolts B work together with nuts N to fasten and secure the first connecting plate 8, the second connecting member 7, and the second connecting plate 9. Bolts B are also inserted through the seventh bolt hole 8H2, the fourth bolt hole 6H2, and the ninth bolt hole 9H2.

[0029] Bolt B, in cooperation with nut N, fastens and secures the first connecting plate 8, the lower connecting portion 6B, and the second connecting plate 9 together. As a result, the damper member 6 is fixed to the second connecting member 7 via the first connecting plate 8 and the second connecting plate 9. The second pin P2 is inserted into the first pin hole 8H3, the second guide hole 5H3, and the second pin hole 9H3. The second pin P2 is fixed to the first pin hole 8H3 and the second pin hole 9H3 and is movable along the second guide hole 5H3. With the above configuration, the first connecting member 5, the damper member 6, and the second connecting member 7 are connected.

[0030] As shown in Figure 4, in the wooden seismic wall 1, the wooden board 2 is connected to the second steel beam T2 via a connecting device 4. The wooden board 2 is connected to the connecting device 4 via a first pin P1. When an earthquake occurs and the building deforms, causing a relative vertical displacement between the wooden board 2 and the second steel beam T2, the first pin P1 fixed to the wooden board 2 moves within the length of the first guide hole 5H1. The wooden board 2 is connected by the connecting device 4 so as to be able to move vertically within a predetermined range of the length of the first guide hole 5H1.

[0031] During an earthquake, the wooden board 2 and the second steel beam T2 may move relative to each other along the width direction. When the wooden board 2 and the second steel beam T2 move relative to each other along the width direction, the first pin P1 fixed to the wooden board 2 presses the first guide hole 5H1 in the width direction. At this time, if the load generated based on the relative displacement between the first connecting member 5 and the second connecting member 7 is less than a predetermined value, the deformed portion 6C of the damper member 6 undergoes elastic deformation in the width direction (shear direction). When the deformation of the building returns to its original state, the elastically deformed damper member 6 returns to its original shape and returns the wooden board 2 and the second steel beam T2 to their original positions.

[0032] At this time, the second pin P2 moves along the second guide hole 5H3. As a result, the relative direction of movement of the wooden board 2 with respect to the connecting device 4 in the width direction is restricted, and a load in the design shear direction can be generated on the damper member 6.

[0033] The deformable portion 6C of the damper member 6 extends in the width direction and yields and deforms when the load resulting from the relative displacement in the width direction between the first connecting member 5 and the second connecting member 7 exceeds a predetermined value. By yielding and deforming in the shear direction, the damper member 6 absorbs energy and prevents the wooden board 2 from deforming and breaking. The connecting device 4 can be dismantled after an earthquake, and its performance before the earthquake can be restored by replacing the damper member 6.

[0034] As shown in Figure 5, the upper part of the wooden board 2 and the first steel beam T1 may be indirectly connected by a stiffness adjustment beam T3 formed of, for example, an H-beam. The stiffness adjustment beam T3 is fixed to, for example, the first steel beam T1 via a second fixing member 3A. The stiffness adjustment beam T3 is provided, for example, between the first steel beam T1 to be installed and the fixing member 3, and its stiffness is adjusted so that it elastically deforms when the building deforms, allowing adjustment of the timing at which the damper member 6 yields.

[0035] The stiffness-adjusting beam T3 is formed such that its deflection stiffness is smaller than that of the first steel beam T1, for example. When the wooden board 2 and the second steel beam T2 are displaced relative to each other along the width direction, the stiffness-adjusting beam T3 bends and undergoes elastic deformation, delaying the timing at which the damper member 6 yields compared to when the wooden board 2 is directly connected to the first steel beam T1. The timing at which the damper member 6 yields can be arbitrarily adjusted based on the deflection stiffness of the stiffness-adjusting beam T3.

[0036] As described above, the wooden seismic wall 1 ensures seismic performance based on the strength of the wooden boards 2, and in the event of an earthquake, it is possible to deform the damper member 6 to prevent the wooden boards 2 from being destroyed. The wooden seismic wall 1 can prevent the destruction of the wooden boards 2 based on the connecting device 4 when the toughness of the wooden boards 2 in the width direction (horizontal direction) is high. The wooden seismic wall 1 can appropriately suppress the required horizontal load-bearing capacity due to the high toughness of the steel material in the connecting device 4.

[0037] With the wooden seismic wall 1, when an earthquake occurs and a load exceeding a predetermined level is placed on the damper member 6, the damper member 6 yields and deforms, thereby preventing the wooden board 2 from being destroyed. With the wooden seismic wall 1, the damper member 6 can be easily replaced after an earthquake while the wooden board 2 remains in place, allowing the wall to easily return to its pre-earthquake performance.

[0038] [Second Embodiment] The following describes the wooden seismic wall 1A according to the second embodiment. In the following description, the same names and reference numerals as in the first embodiment will be used as appropriate, and redundant explanations will be omitted. The wooden seismic wall 1A is configured, for example, to prevent the wooden boards from breaking under bending loads that occur during an earthquake.

[0039] As shown in Figure 6, the wooden seismic wall 1A is connected to the first steel beam T1 and the second steel beam T2 via connecting devices 10 provided at the four corners. The connecting devices 10 are provided point-symmetrically from the center of the wooden board 2. Below, one of the pair of connecting devices 10 shown below will be described as representative. The connecting device 10 is configured to absorb seismic energy in response to bending loads acting on the wooden board 2, for example.

[0040] As shown in Figures 7 and 8, the wooden board 2 has a notch 2K formed at its corner. The notch 2K has an inclined surface 2KA that is tilted in the vertical direction. The connecting device 10 comprises a first connecting member 11 provided on the inclined surface 2KA, a second connecting member 13 provided on the second steel beam T2, and a damper member 12 provided between the first connecting member 11 and the second connecting member 13. The first connecting member 11 comprises a fixing plate 11A fixed to the inclined surface 2KA and a pair of connecting plates 11B provided on the fixing plate 11A. The fixing plate 11A is fixed to the inclined surface 2KA using bolts B or the like.

[0041] A pair of connecting plates 11B are arranged opposite each other along the normal direction of the fixing plate 11A. The connecting plates 11B are formed in the shape of triangular plates. The connecting plates 11B are positioned so that their vertices are at the corners of the wooden board 2. Pin holes 11H are provided at the vertices of the connecting plates 11B. The connecting plates 11B are connected to the damper member 12 by a first pin P3 using the pin holes 11H. The central part of the damper member 12 is inserted between the pair of connecting plates 11B.

[0042] The damper member 12 is formed, for example, in the shape of a rectangular plate. A first pin hole 12H1 is provided in the center of the damper member 12. The first pin hole 12H1 is located at a position corresponding to the position of the pin hole 11H of the connecting plate 11B. A first pin P3 is inserted into the first pin hole 12H1 and connected to the connecting plate 11B. The damper member 12 is positioned so that its longitudinal direction is aligned with an angle corresponding to the inclination angle of the inclined surface 2KA. A pair of second pin holes 12H2 are provided at both ends of the damper member 12 in the longitudinal direction.

[0043] The damper member 12 is connected to the second connecting member 13 via a pair of first connecting plates 14 and second connecting plates 15. The second connecting member 13 is formed, for example, in the shape of a triangular plate. The second connecting member 13 is connected, for example, to the second steel beam T2. The base of the second connecting member 13 is welded, for example, to the second steel beam T2. The second connecting member 13 is formed such that its hypotenuse follows the inclination of the damper member 12. The second connecting member 13 is provided with a plurality of bolt holes 13H.

[0044] A pair of first connecting plates 14 and second connecting plates 15 are fixed to the second connecting member 13 using bolts B and nuts N. The pair of first connecting plates 14 and second connecting plates 15 are formed in an L-shape, having the same shape when viewed in the Y direction. The second connecting plate 15 has the same configuration as the first connecting plate 14. The configuration of the first connecting plate 14 will be described below as a representative example.

[0045] A pair of first connecting plates 14 have a first notch 14K formed therein. The first notch 14K is formed to match the shape of the connecting plate 11B. A pair of second pin holes 14H are provided at both ends of the first connecting plates 14. The pair of second pin holes 14H are provided in accordance with the positions of the pair of second pin holes 12H2 of the damper member 12. A pair of second pins P4 are inserted into the pair of second pin holes 14H. The pair of second pins P4 are also inserted into the pair of second pin holes 12H2 of the damper member 12, connecting the pair of first connecting plates 14 and second connecting plates 15 to the damper member 12.

[0046] A strip-shaped upper and lower connecting plate 16 is positioned on the upper part of the second connecting member 13. The upper and lower connecting plate 16 is sandwiched between a pair of first connecting plates 14 and second connecting plates 15 and is constructed with bolts B and nuts N. The upper and lower connecting plate connects the connecting devices 10 provided on the upper and lower parts of the wooden board 2. The upper and lower connecting plate 16 is housed, for example, in a groove 2M provided on the side surface of the wooden board 2. The upper and lower connecting plate 16 may also be positioned facing the side surface of the wooden board 2.

[0047] With the above configuration, when an earthquake occurs and the building deforms, causing bending stress to be generated at the four corners of the wooden board 2, the damper member 12 in the connecting device 10 deforms in the bending direction. The damper member 12 undergoes elastic deformation by bending in the bending direction when the moment generated based on the relative bending displacement between the first connecting member 11 and the second connecting member 13 is less than a predetermined value.

[0048] The damper member 12 yields and deforms in the bending direction when the moment generated based on the relative bending displacement between the first connecting member 11 and the second connecting member 13 exceeds a predetermined value. By yielding and deforming in the bending direction, the damper member 12 absorbs energy and prevents the wooden board 2 from deforming and breaking. The connecting device 10 can be dismantled after an earthquake, and its performance before the earthquake can be restored by replacing the damper member 12.

[0049] As described above, with the wooden seismic wall 1A, seismic performance can be ensured based on the strength of the wooden boards 2, and in the event of an earthquake, the damper member 12 can be deformed to prevent the destruction of the wooden boards 2. With the wooden seismic wall 1A, the required horizontal load-bearing capacity can be appropriately suppressed due to the high toughness of the steel material in the connecting device 10. With the wooden seismic wall 1A, in the event of an earthquake in which a load exceeding a predetermined amount is placed on the damper member 12, the destruction of the wooden boards 2 can be prevented by yielding and deforming the damper member 12. With the wooden seismic wall 1A, the performance can be easily restored to its pre-earthquake state by replacing the damper member 12 while leaving the wooden boards 2 in place after an earthquake.

[0050] [Third Embodiment] The following describes the wooden seismic wall 1B according to the third embodiment. In the following description, the same names and reference numerals as in the above embodiment will be used as appropriate for components identical to those in the above embodiment, and redundant explanations will be omitted. The wooden seismic wall 1B is configured, for example, to prevent the wooden boards from breaking when subjected to vertical (axial) loads that occur during an earthquake.

[0051] As shown in Figure 9, the wooden seismic wall 1B is connected to the first steel beam T1 and the second steel beam T2 via a pair of shear force transmission members 25 provided at the top and bottom and connecting devices 20 provided at the four corners. The connecting devices 20 are provided symmetrically with respect to the vertical centerline of the wooden board 2. Below, one of the lower pair of connecting devices 20 will be described as representative. The connecting device 20 is configured to absorb seismic energy in response to vertical loads acting on the wooden board 2, for example.

[0052] As shown in Figure 10, the wooden seismic wall 1B includes a shear force transmission member 25 and a connecting device 20 that connect the wooden board 2 and the second steel beam T2. The shear force transmission member 25 is formed, for example, in the shape of a rectangular plate. The shear force transmission member 25 is welded, for example, to the upper part of the second steel beam T2. The shear force transmission member 25 is provided with a plurality of pin holes 25H. The plurality of pin holes 25H are formed along the width direction.

[0053] Multiple pinholes 25H are formed as elongated holes aligned vertically. A groove (not shown) for accommodating the shear force transmission member 25 is formed on the lower surface of the wooden board 2. Multiple pinholes 2H2 are provided on the lower part of the wooden board 2. Multiple pinholes 2H2 are provided along the width direction. Multiple pinholes 2H2 are provided corresponding to the positions of multiple pinholes 25H. With the shear force transmission member 25 housed in the groove of the wooden board 2, pins PB are inserted into the multiple pinholes 2H2 and multiple pinholes 25H. When loads are applied to the wooden board 2 and the second steel beam T2 in relatively different width directions, the pins PB press against the pinholes 25H, restricting the relative movement between the shear force transmission member 25 and the wooden board 2.

[0054] The pin PB slides through the pin hole 25H when loads are applied to the wooden board 2 and the second steel beam T2 in different directions relative to each other in the vertical direction, causing the shear force transmission member 25 and the wooden board 2 to move relative to each other along the vertical direction. The wooden board 2 has rectangular notches 2Q formed at its four corners. The connecting device 20 includes a first connecting member 21 connected to the wooden board 2, a second connecting member 23 connected to the second steel beam T2, and a damper member 22 connecting the first connecting member 21 and the second connecting member 23. The first connecting member 21 is formed, for example, in a strip shape along the vertical direction.

[0055] The first connecting member 21 connects the upper and lower connecting devices 20. The first connecting member 21 has numerous pin holes 21H1 formed along the vertical direction. A pair of first pin holes 21H2 are provided at both ends of the first connecting member 21 in the vertical direction. The first connecting member 21 is inserted into a groove 2N provided along the side surface of the wooden board 2. On both sides of the width direction of the wooden board 2, numerous pin holes 2H1 are provided at positions corresponding to the pin holes 21H1 of the first connecting member 21 when it is inserted into the groove 2N. A pin PA is inserted into each pin hole 21H1 corresponding to each pin hole 2H1, and the wooden board 2 and the first connecting member 21 are connected.

[0056] When the first connecting member 21 is inserted into the groove 2N, both ends, including the first pin hole 21H2, are exposed within the notch 2Q. The first pin P5 is inserted into the first pin hole 21H2, connecting the first connecting member 21 to the pair of damper members 22. The lower end of the first connecting member 21 is, for example, held between the pair of damper members 22. The damper member 22 has, for example, an upper connecting portion 22A formed above which it connects to the first connecting member 21. The damper member 22 also has, for example, a lower connecting portion 22B formed below which it connects to the second connecting member 23.

[0057] The upper connecting portion 22A and the lower connecting portion 22B are each provided with a pin hole 22H. The upper connecting portion 22A and the lower connecting portion 22B are formed in an annular shape surrounding the pin hole 22H. A deformable portion 22C, formed in the shape of a cylindrical tube, is provided between the upper connecting portion 22A and the lower connecting portion 22B. The upper connecting portion 22A is connected to the end of the first connecting member 21 via a first pin P5 inserted into the pin hole 22H. The lower connecting portion 22B is connected to the second connecting member 23 via a first pin P5 inserted into the pin hole 22H. The deformable portion 22C deforms along the vertical direction when a load is applied to the first connecting member 21 in a direction that separates them vertically during an earthquake.

[0058] With the above configuration, when an earthquake occurs and the building deforms, generating vertical axial forces at the four corners of the wooden board 2, the damper member 22 in the connecting device 20 deforms to extend vertically. The damper member 22 extends vertically and undergoes elastic deformation when the load generated based on the relative displacement in the extension direction between the first connecting member 21 and the second connecting member 23 is less than a predetermined value.

[0059] The damper member 22 yields and deforms in the extension direction when the load resulting from the relative extensional displacement between the first connecting member 21 and the second connecting member 23 exceeds a predetermined value. By yielding and deforming in the extension direction, the damper member 22 absorbs energy, preventing the wooden board 2 from deforming and breaking. The connecting device 20 can be dismantled after an earthquake, and its performance before the earthquake can be restored by replacing the damper member 22.

[0060] As described above, with the wooden seismic wall 1B, seismic performance can be ensured based on the strength of the wooden boards 2, and in the event of an earthquake, the damper member 22 can be deformed to prevent the destruction of the wooden boards 2. With the wooden seismic wall 1B, the required horizontal load-bearing capacity can be appropriately suppressed due to the high toughness of the steel material in the connecting device 20. With the wooden seismic wall 1B, in the event of an earthquake in which a load exceeding a predetermined amount is placed on the damper member 22, the destruction of the wooden boards 2 can be prevented by yielding and deforming the damper member 22. With the wooden seismic wall 1B, the performance can be easily restored to its pre-earthquake state by replacing the damper member 22 while leaving the wooden boards 2 in place after an earthquake.

[0061] Furthermore, with the timber seismic walls 1,1A,1B described above, by applying the connecting devices 4,10,20 to the timber boards 2 formed with high toughness, the required horizontal load-bearing capacity can be kept lower than that of a normal seismic-resistant building, and the number of timber boards 2 using CLT members and the required strength of the surrounding installation targets can be reduced. With the timber seismic walls 1,1A,1B, the connecting devices 4,10,20 can be replaced with new devices developed in the future without having to attach or detach the timber boards 2, thereby improving performance.

[0062] With the wooden seismic walls 1,1A,1B, the load on surrounding structures and the timing of yielding can be controlled according to the design philosophy by adjusting the rigidity and strength of the damper members 6,12,22. The wooden seismic walls 1,1A,1B can be applied to seismic reinforcement of existing buildings, and by adjusting the strength and rigidity of the damper members 6,12,22 according to the strength and deformation performance of the existing building, it is possible to reinforce the existing building efficiently without increasing its required horizontal load-bearing capacity.

[0063] Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment and can be modified as appropriate without departing from the spirit of the invention. For example, the wooden board 2 and the connecting device may be connected not only with pins, but also with general connecting members such as bolts, nails, and screws. Also, the damper member may be made not only of steel plate, but also of a viscoelastic material or a damper made of a friction member. The wooden board may be made of other materials such as plywood, composite material, resin material, or concrete wall, as long as they have equivalent strength, in addition to CLT material. In other words, the structure of the wooden seismic wall 1 may be applied to other seismic walls that have wall boards other than wall boards made of CLT material. [Explanation of Symbols]

[0064] 1 Wood shear wall 3 Fixing member 4, 10, 20 Connection devices 5, 11, 21 First connecting member 6, 12, 22 Damper members 7, 13, 23 Second connecting member T3 stiffness adjustment beam

Claims

1. Wall panels and, The system includes a connecting device that connects the wall panel and the object to be installed, The aforementioned connection device, The first connecting member connected to the wall panel, A second connecting member connected to the installation location of the wall panel, A damper member is detachably provided between the first connecting member and the second connecting member, and which yields and deforms in the event of a load exceeding a predetermined amount. The first connecting member, the second connecting member, and the first connecting plate disposed on one side of the damper member, The device comprises the first connecting member, the second connecting member, and a second connecting plate positioned on the other side of the damper member, The damper member is formed in a plate shape and has an upper connecting portion provided above, a lower connecting portion provided below, and a deformable portion provided between the upper connecting portion and the lower connecting portion. The first connecting member and the damper member are connected by the upper connecting portion of the damper member being fitted into a notch formed in the first connecting member. The second connecting member and the damper member are connected by the cooperation of the first connecting plate and the second connecting plate, so that the second connecting member and the lower connecting portion of the damper member are connected. The first connecting plate, the second connecting plate, and the first connecting member are connected by inserting a second pin into a first pin hole formed in the first connecting plate, a second pin hole formed in the second connecting plate, and a second guide hole formed in the first connecting member. Earthquake-resistant wall.

2. The first connecting member includes: In the upper half of the region, a plurality of first guide holes are formed at intervals in the width direction, and the first guide holes are formed as elongated holes along the vertical direction. In the lower half of the region, a pair of the second guide holes are formed on both sides in the width direction, and the second guide holes are formed as elongated holes along the width direction. The wall plate and the first connecting member are connected through the plurality of first guide holes. The seismic wall according to claim 1, wherein the first connecting member, the first connecting plate, and the second connecting plate are connected through the pair of second guide holes.

3. Wall panels and, The system includes a connecting device that connects the wall panel and the object to be installed, The aforementioned connection device, The first connecting member connected to the wall panel, A second connecting member connected to the installation location of the wall panel, The device comprises a damper member detachably provided between the first connecting member and the second connecting member, which yields and deforms in the event of a load exceeding a predetermined amount, The wall panel and the object to be installed are provided with fixing members, The wall panel is an earthquake-resistant wall in which the upper part is fixed to the installation object by the fixing member and the lower part is fixed to the installation object by the connecting device.

4. The system includes a rigidity adjustment beam provided between the installation target and the fixing member, the rigidity of which is adjusted so as to elastically deform when the installation target deforms, allowing for adjustment of the timing at which the damper member yields. The earthquake-resistant wall according to claim 3.

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