Vibration-damping structure

Abstract

To provide a vibration control structure with superior vibration control performance.SOLUTION: A vibration control structure 1 has an upper support member 2 fixed to an upper transverse member, a lower support member 3 fixed to a lower transverse member, and a vibration control device 4 connected to the upper and lower support members 2, 3 via upper and lower joint members 5, 6, body parts 51, 61 of the upper and lower joining members 5, 6, respectively, are pressed in a direction close to each other with respect to the upper and lower supporting members 2, 3, respectively, in the second direction X2 to fix them to the upper and lower supporting members 2, 3, respectively, and respective bearing parts 53, 63 of the upper and lower joining members 5, 6 are embedded in the upper and lower supporting members 2, 3 so as to directly or indirectly abut on the upper and lower supporting members 2, 3 on both sides of the first direction X1.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a vibration damping structure. [Background technology]

[0002] Conventionally, in order to improve the earthquake resistance and vibration damping of wooden buildings, a reinforcement body (vibration damping structure) such as that disclosed in Patent Document 1 has been used. The reinforcement body of Patent Document 1 includes a first support plate fixed to an upper beam, a second support plate fixed to a lower foundation, and a vibration damping section connected between the first support plate and the second support plate. The vibration damping section includes a first vibration damping plate connected to the first support plate, a second vibration damping plate connected to the second support plate, and a viscoelastic body interposed between the first vibration damping plate and the second vibration damping plate. In this reinforcement body, when the upper beam and the lower foundation are relatively displaced in the horizontal direction due to an earthquake or the like, the first support plate and the first vibration damping plate and the second support plate and the second vibration damping plate are relatively displaced in the horizontal direction, so that the viscoelastic body undergoes shear deformation and the seismic energy is attenuated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-151967 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the reinforcement of Patent Document 1, when the upper beam and the lower base are displaced relative to each other in the horizontal direction, a tensile force that moves the support plate and the vibration control part relative to each other in the vertical direction and a shear force that moves the support plate and the vibration control part relative to each other in the horizontal direction are generated. Here, the vibration control plate of the vibration control part is connected to the support plate by a fastener such as a nail or a screw that extends perpendicular to the direction in which the tensile force and the shear force are generated. The metal vibration control plate is provided with an insertion hole for inserting the fastener, and a clearance is generated between the inner wall around the insertion hole and the fastener. Therefore, when the upper beam and the lower base are displaced relative to each other in the horizontal direction, the support plate and the vibration control part move relative to each other by the amount of the clearance, and the vibration energy cannot be attenuated because the vibration control plate made of metal and the support plate made of wood cannot be fixed so firmly in contact with each other to avoid deformation of the support plate, so that a friction force sufficient to suppress the relative movement cannot be expected between the two. Therefore, the reinforcing member of Patent Document 1 cannot provide sufficient vibration damping performance.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a vibration-damping structure having superior vibration-damping performance. [Means for solving the problem]

[0006] The vibration-damping structure of the present invention is a vibration-damping structure disposed between an upper cross member and a lower cross member made of wood, each of which extends in a first direction and is spaced apart from each other in a second direction that is substantially perpendicular to the first direction, the vibration-damping structure comprising: an upper wooden support member fixed to the upper cross member; a lower wooden support member fixed to the lower cross member; and a vibration-damping device joined to the upper support member via an upper metal connecting member and joined to the lower support member via a lower metal connecting member, the upper and lower connecting members each comprising a main body portion fixed to the underside of the upper support member and the upper surface of the lower support member, respectively, and a vibration-damping member extending from the main body portion toward the vibration-damping device and fixed to the vibration-damping device. and a support portion extending from the main body portion toward each of the upper and lower support members and embedded in each of the upper and lower support members, wherein the main body portions of the upper and lower joining members are pressed in a direction approaching each other relative to each of the upper and lower support members in the second direction and fixed to the lower surface of the upper support member and the upper surface of the lower support member, respectively, and the support portions of the upper and lower joining members are embedded in each of the upper and lower support members so as to directly or indirectly abut each of the upper and lower support members on both sides in the first direction.

[0007] It is also preferable that the support portion is formed so as to extend in a direction substantially perpendicular to a plane including the first and second directions.

[0008] It is also preferable that the support portions of the upper and lower joining members are embedded in the upper and lower support members, respectively, so as to indirectly abut against the upper and lower support members, respectively, on both sides in the first direction via a gap adjustment material.

[0009] It is also preferable that the upper and lower support members are fitted into the upper and lower cross members, respectively, so as to abut against the upper and lower cross members on both sides in the first direction, and are fixed to the upper and lower cross members, respectively, by being pressed in a direction approaching each other relative to the upper and lower cross members in the second direction.

[0010] It is also preferable that the ratio of the rotational stiffness of the upper and lower support members relative to the upper and lower cross members, respectively, in a plane including the first and second directions to the shear stiffness of the vibration damping device in the first direction is (100 kN·m / rad) / (1 kN / mm) or greater.

[0011] It is also preferable that the vibration control device comprises an upper fixed plate fixed to the fixed portion of the upper connecting member, a lower fixed plate fixed to the fixed portion of the lower connecting member, and a damper plate extending between the upper fixed plate and the lower fixed plate and formed from low yield point steel, and that the damper plate is formed so as to become thinner toward the center of the damper plate in a plane including the first and second directions.

[0012] It is also preferable that the vibration control structure includes an out-of-plane restraint material that suppresses deformation of the vibration control device outward in a direction approximately perpendicular to a plane including the first and second directions, the out-of-plane restraint material is connected to each of the upper and lower support members so as to abut each of the upper and lower support members in a direction approximately perpendicular to the plane including the first and second directions, and the out-of-plane restraint material is connected to each of the upper and lower support members so as to be rotatable around an axis extending approximately perpendicular to the plane including the first and second directions. Effect of the Invention

[0013] According to the present invention, it is possible to provide a vibration-damping structure having superior vibration-damping performance. [Brief description of the drawings]

[0014] [Figure 1] 1 is a schematic front view of a vibration damping structure according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an enlarged view of part II in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 2 is an enlarged view of part V in FIG. [Figure 6] 6 is a cross-sectional view taken along line VI-VI in FIG. 5. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. 5. [Figure 8] FIG. 2 is an enlarged view of part VIII in FIG. [Figure 9] FIG. 9 is a side view of FIG. 8. [Figure 10] 9 is a cross-sectional view taken along line XX in FIG. 8. [Figure 11] FIG. 2 is an enlarged side view of the out-of-plane restraint member of FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, a vibration damping structure according to an embodiment of the present invention will be described with reference to the accompanying drawings. However, the embodiment shown below is merely an example, and the vibration damping structure of the present invention is not limited to the following example.

[0016] The vibration-damping structure 1 of this embodiment is used by being incorporated into the frame of a wooden building as shown in Fig. 1, mainly for the purpose of improving the earthquake resistance and vibration-damping properties of the wooden building. The frame into which the vibration-damping structure 1 is incorporated includes upper and lower wooden beams UB and LB, each of which extends in a first direction X1 (horizontal direction in the illustrated example) and is spaced apart from each other in a second direction X2 (vertical direction in the illustrated example) that is substantially perpendicular to the first direction X1. The frame further includes first and second wooden beams P1 and P2, each of which extends along the second direction X2 and is spaced apart from each other in the first direction X1. The first and second columns P1 and P2 are fixed to the upper and lower beams UB and LB, respectively.

[0017] The first and second columns P1, P2 are provided to extend in the second direction X2 (vertical direction in the illustrated example) and are members that support the load of the upper part of the wooden building. The upper and lower cross members UB, LB are provided laterally (horizontally in the illustrated example) across the first and second columns P1, P2 and are members that support the load of the upper part of the wooden building and transmit the load of the upper part of the wooden building to the first and second columns P1, P2. In this embodiment, the upper cross member UB is a beam that is provided to extend horizontally above the first and second columns P1, P2 in the vertical direction, and the lower cross member LB is a beam or foundation that is provided to extend horizontally below the first and second columns P1, P2 in the vertical direction.

[0018] In this embodiment, the first and second columns P1, P2 and the upper and lower horizontal members UB, LB are fixed to each other via the same type of column fixing member F as shown in FIG. 1. However, the first and second columns P1, P2 and the upper and lower horizontal members UB, LB may be fixed to each other by a known fixing method, such as directly fixing to each other by a method such as a mortise and tenon joint. In the following description, when describing matters common to both the first and second columns P1, P2, the first and second columns P1, P2 may be simply referred to as columns P1, P2, and when describing matters common to both the upper and lower horizontal members UB, LB, the upper and lower horizontal members UB, LB may be simply referred to as horizontal members UB, LB.

[0019] 2 to 4, the column fixing member F includes a column-side fixing portion F1 fixed to the columns P1, P2, a cross-member-side fixing portion F2 fixed to the cross-members UB, LB, and a connecting portion F3 connecting the column-side fixing portion F1 and the cross-member-side fixing portion F2. The column fixing member F only needs to have a strength higher than at least the columns P1, P2 and the cross-members UB, LB, and its constituent material is not particularly limited, and can be made of a hard material such as steel, for example.

[0020] The column side fixing part F1 is a part that is fixed by contacting the columns P1, P2. As shown in Figs. 2 to 4, the column side fixing part F1 includes a pair of side fixing plates F11, F11 fixed to the side surfaces of the columns P1, P2 in a third direction X3 that is substantially perpendicular to the first and second directions X1, X2, and an end connection plate F12 that connects the ends of the pair of side fixing plates F11, F11 in the second direction X2. The pair of side fixing plates F11, F11 are formed in a plate shape extending along the first and second directions X1, X2, and are arranged to abut against the side surfaces of the columns P1, P2 across the columns P1, P2 in the third direction X3. The end connection plate F12 is formed in a plate shape extending along the first and third directions X1, X3, and is arranged to abut against the end faces of the columns P1, P2 on the corresponding cross members UB, LB sides in the second direction X2. The column side fixing part F1 is fixed to the columns P1, P2 by fixing the pair of side fixing plates F11, F11 to both side surfaces of the columns P1, P2 with fixing tools B1 such as screws penetrating the side fixing plate F11 along the third direction X3 and extending to the inside of the columns P1, P2. The column fixing member F suppresses the relative movement of the columns P1, P2 to the cross members UB, LB in the third direction X3 by fixing the pair of side fixing plates F11, F11 to the side surfaces of the columns P1, P2 sandwiching the columns P1, P2 in the third direction X3. In addition, the column fixing member F suppresses the relative movement of the columns P1, P2 to the corresponding cross members UB, LB in the second direction X2 by fixing the end connecting plate F12 to the end faces of the columns P1, P2 on the side of the corresponding cross members UB, LB in the second direction X2.

[0021] The cross member side fixing part F2 is a part that is fixed by abutting against the cross members UB, LB. As shown in Figs. 2 to 4, the cross member side fixing part F2 is provided so as to face the corresponding cross members UB, LB in the second direction X2, and is fixed so as to be pressed against the corresponding cross members UB, LB. The cross member side fixing part F2 is formed in a plate shape extending along the first and third directions X1, X3, and is arranged so as to abut against the end faces of the corresponding cross members UB, LB in the second direction X2. The cross member side fixing part F2 is fixed to the corresponding cross members UB, LB by a fixing device B2 such as a combination of a bolt and a nut that extends through the cross member side fixing part F2 and the cross members UB, LB along the second direction X2. The cross member side fixing part F2 is fixed so as to be pressed against the cross members UB, LB by firmly fixing the cross member side fixing part F2 and the cross members UB, LB by the fixing device B2.

[0022] The connecting portion F3 connects the column side fixing portion F1 and the cross member side fixing portion F2 to each other in the second direction X2, and supports the column side fixing portion F1 and the cross member side fixing portion F2 relative to each other. The connecting portion F3 extends along the first and second directions X1 and X2 and includes a pair of end side connecting plates F31, F31 formed continuously and integrally with each of the pair of side surface fixing plates F11, F11, and a center side connecting plate F32 extends along the second and third directions X2 and X3 and is formed between the pair of end side connecting plates F31, F31 at approximately the center of the pair of end side connecting plates F31, F31 in the first direction X1. By forming a pair of end side connecting plates F31, F31 to extend along the first direction X1, deformation of the pair of side fixing plates F11, F11 in the first direction X1 is suppressed, and by arranging the pair of end side connecting plates F31, F31 at a distance in the third direction X3 and forming the central connecting plate F32 to extend along the third direction X3, deformation of the pair of side fixing plates F11, F11 in the third direction X3 is suppressed.

[0023] As shown in Fig. 1, the vibration control structure 1 is disposed between an upper cross member UB and a lower cross member LB, and damps vibration energy generated in the frame of a wooden building due to disturbances such as earthquake motion and wind. The vibration control structure 1 includes an upper wooden support member 2 fixed to the upper cross member UB, a lower wooden support member 3 fixed to the lower cross member LB, and a vibration control device 4 joined to the upper support member 2 and the lower support member 3. In the vibration control structure 1, vibration energy generated in the upper and lower cross members UB, LB is transmitted to the vibration control device 4 via the upper and lower support members 2, 3, and the transmitted vibration energy is damped by the vibration control device 4.

[0024] The upper support member 2 is fixed to the upper cross member UB and joined to the vibration damping device 4, and is a member that supports the vibration damping device 4 with respect to the upper cross member UB. The upper support member 2 transmits the displacement of the upper cross member UB caused by earthquake motion or the like to the vibration damping device 4. The upper support member 2 only needs to support the vibration damping device 4 with respect to the upper cross member UB and transmit the displacement of the upper cross member UB to the vibration damping device 4, and the shape of the upper support member 2 is not particularly limited. In this embodiment, the upper support member 2 is formed in a plate shape extending along the first and second directions X1 and X2 as shown in FIG. 1, and the upper end side is fixed to the upper cross member UB and the lower end side is joined to the vibration damping device 4. The upper support member 2 is not particularly limited and is formed of cross-laminated timber (CLT), laminated veneer lumber (LVL), laminated lumber, solid wood, or the like.

[0025] The upper support member 2 supports the vibration damping device 4 with respect to the upper cross member UB, and is fixed to the upper cross member UB so as to transmit the displacement of the upper cross member UB to the vibration damping device 4. The fixing method to the upper cross member UB is not particularly limited. In this embodiment, the upper support member 2 is fitted to the upper cross member UB so as to abut the upper cross member UB on both sides in the first direction X1, as shown in FIG. 1. That is, the upper support member 2 and the upper cross member UB are fitted to each other without providing a clearance between the upper support member 2 and the upper cross member UB in the first direction X1. As a result, when the upper cross member UB is displaced in the first direction X1, the relative movement between the upper cross member UB and the upper support member 2 in the first direction X1 is suppressed, so that when the displacement of the upper cross member UB in the first direction X1 is transmitted to the upper support member 2, the transmission loss is suppressed and the displacement is transmitted more accurately. 1, the upper support member 2 and the upper cross member UB are fitted together by fitting the protrusion 21 provided on the upper support member 2 into the recess UB1 provided on the upper cross member UB. However, the upper support member 2 may be provided with a recess, the upper cross member UB may be provided with a protrusion, and the protrusion of the upper cross member UB may be fitted into the recess of the upper support member 2, so that the upper support member 2 and the upper cross member UB are fitted together.

[0026] The upper support member 2 is further pressed against the upper cross member UB in the second direction X2 in a direction approaching each other, as shown in FIG. 1, and fixed to the upper cross member UB. That is, the upper support member 2 and the upper cross member UB are fixed to each other so as to be pressed against each other in the second direction X2. As a result, even if a tensile force is generated between the upper support member 2 and the upper cross member UB in the second direction X2 to pull them apart, the upper support member 2 resists the tensile force to suppress the relative movement of the upper support member 2 in the second direction X2 with respect to the upper cross member UB. For example, when the upper cross member UB is largely displaced relative to the lower cross member LB in the first direction X1, a force is applied to the upper support member 2 in a direction in which the upper support member 2 rotates relative to the upper cross member UB within a plane (the plane of FIG. 1) including the first and second directions X1 and X2. If the upper support member 2 rotates relative to the upper cross member UB, the displacement of the upper cross member UB in the first direction X1 cannot be accurately transmitted to the upper support member 2. In contrast, in this embodiment, the relative movement of the upper support member 2 in the second direction X2 with respect to the upper cross member UB is suppressed, and therefore, when the displacement of the upper cross member UB in the first direction X1 is transmitted to the upper support member 2, the transmission loss is suppressed and the displacement is transmitted more accurately.

[0027] For the above-mentioned reasons, the upper support member 2 is preferably fixed to the upper cross member UB so that when the upper cross member UB and the lower cross member LB are displaced relative to each other in the first direction X1, the relative rotation of the upper support member 2 relative to the upper cross member UB is suppressed in a plane including the first and second directions X1 and X2. From this viewpoint, the upper support member 2 is preferably fixed to the upper cross member UB so that the rotational rigidity of the upper support member 2 relative to the upper cross member UB in a plane including the first and second directions X1 and X2 is greater than the shear rigidity of the vibration damping device 4 in the first direction X1. This makes it possible to suppress the upper support member 2 from rotating relative to the upper cross member UB at least before the vibration damping device 4 is deformed by receiving a shear force in the first direction X1, and to more accurately transmit the displacement of the upper cross member UB to the upper support member 2. From the same viewpoint, it is preferable that the upper support member 2 is fixed to the upper cross member UB so that the ratio between the rotational rigidity of the upper support member 2 relative to the upper cross member UB in the plane including the first and second directions X1 and X2 and the shear rigidity of the vibration damping device 4 in the first direction X1 is (100 kN·m / rad) / (1 kN / mm) or more. For example, in this embodiment, as shown in FIG. 1, the upper support member 2 and the upper cross member UB are pressed against each other in the second direction X2 at both ends of the upper support member 2 in the first direction X1, and the upper support member 2 and the upper cross member UB are fixed to each other. By fixing both ends of the upper support member 2 in the first direction X1 to the upper cross member UB in this way, the rotational rigidity of the upper support member 2 relative to the upper cross member UB can be increased and the relative rotation of the upper support member 2 relative to the upper cross member UB can be suppressed. In addition, it is also possible to adjust the length of the upper support member 2 in the first direction X1 by lengthening it, thereby making it possible to adjust the rotational rigidity of the upper support member 2 relative to the upper cross member UB.

[0028] The upper support member 2 and the upper cross member UB may be fixed to each other so as to be pressed against each other in the second direction X2, and the fixing method is not particularly limited. In this embodiment, as shown in Fig. 1 and Figs. 5 to 7, the upper support member 2 and the upper cross member UB are fixed to each other via a support member fixing member 7. The support member fixing member 7 is used not only to fix the upper support member 2 to the upper cross member UB, but also to fix the lower support member 3 to the lower cross member LB. Details of the support member fixing member 7 will be described below together with the description of the lower support member 3.

[0029] The lower support member 3 is a member fixed to the lower cross member LB and joined to the vibration damping device 4, and supports the vibration damping device 4 with respect to the lower cross member LB. The lower support member 3 transmits the displacement of the lower cross member LB caused by earthquake motion or the like to the vibration damping device 4. The lower support member 3 is only required to support the vibration damping device 4 with respect to the lower cross member LB and transmit the displacement of the lower cross member LB to the vibration damping device 4, and the shape thereof is not particularly limited. In this embodiment, the lower support member 3 is formed in a plate shape extending along the first and second directions X1 and X2 as shown in FIG. 1, and the upper end side is joined to the vibration damping device 4 and the lower end side is fixed to the lower cross member LB. The lower support member 3 is not particularly limited and is formed of cross-laminated timber (CLT), laminated veneer lumber (LVL), laminated lumber, solid wood, or the like.

[0030] The lower support member 3 supports the vibration-damping device 4 with respect to the lower cross member LB, and is fixed to the lower cross member LB so as to transmit the displacement of the lower cross member LB to the vibration-damping device 4. The fixing method to the lower cross member LB is not particularly limited. In this embodiment, the lower support member 3 is fitted to the lower cross member LB so as to abut the lower cross member LB on both sides in the first direction X1. That is, the lower support member 3 and the lower cross member LB are fitted to each other without providing a clearance between the lower support member 3 and the lower cross member LB in the first direction X1. As a result, when the lower cross member LB is displaced in the first direction X1, the relative movement between the lower cross member LB and the lower support member 3 in the first direction X1 is suppressed, so that when the displacement of the lower cross member LB in the first direction X1 is transmitted to the lower support member 3, the transmission loss is suppressed and the displacement is transmitted more accurately. 1, the lower support member 3 and the lower cross member LB are fitted together by fitting the convex portion 31 provided on the lower support member 3 into the concave portion LB1 provided on the lower cross member LB. However, the lower support member 3 may be provided with a concave portion, the lower cross member LB may be provided with a convex portion, and the convex portion of the lower cross member LB may be fitted into the concave portion of the lower support member 3, so that the lower support member 3 and the lower cross member LB are fitted together.

[0031] The lower support member 3 is further pressed against the lower cross member LB in the second direction X2 in a direction approaching each other as shown in FIG. 1, and fixed to the lower cross member LB. That is, the lower support member 3 and the lower cross member LB are fixed to each other so as to be pressed against each other in the second direction X2. As a result, even if a tensile force is generated between the lower support member 3 and the lower cross member LB in the second direction X2 to pull them apart, the lower support member 3 is resisted against the tensile force to suppress the relative movement of the lower support member 3 in the second direction X2 with respect to the lower cross member LB. For example, when the upper cross member UB is largely displaced relative to the lower cross member LB in the first direction X1, a force is applied to the lower support member 3 in a direction in which the lower support member 3 rotates relative to the lower cross member LB within a plane (the plane of FIG. 1) including the first and second directions X1 and X2. If the lower support member 3 rotates relative to the lower cross member LB, the displacement of the lower cross member LB in the first direction X1 cannot be accurately transmitted to the lower support member 3. In contrast, in this embodiment, the relative movement of the lower support member 3 in the second direction X2 with respect to the lower cross member LB is suppressed, and therefore, when the displacement of the lower cross member LB in the first direction X1 is transmitted to the lower support member 3, transmission loss is suppressed and the displacement is transmitted more accurately.

[0032] For the above-mentioned reasons, the lower support member 3 is preferably fixed to the lower cross member LB so that when the upper cross member UB and the lower cross member LB are displaced relative to each other in the first direction X1, the relative rotation of the lower support member 3 relative to the lower cross member LB is suppressed in a plane including the first and second directions X1 and X2. From this viewpoint, the lower support member 3 is preferably fixed to the lower cross member LB so that the rotational rigidity of the lower support member 3 relative to the lower cross member LB in a plane including the first and second directions X1 and X2 is greater than the shear rigidity of the vibration damping device 4 in the first direction X1. This makes it possible to suppress the lower support member 3 from rotating relative to the lower cross member LB at least before the vibration damping device 4 is deformed by receiving a shear force in the first direction X1, and to more accurately transmit the displacement of the lower cross member LB to the lower support member 3. From the same viewpoint, it is preferable that the lower support member 3 is fixed to the lower cross member LB so that the ratio between the rotational rigidity of the lower support member 3 relative to the lower cross member LB in a plane including the first and second directions X1 and X2 and the shear rigidity of the vibration damping device 4 in the first direction X1 is (100 kN·m / rad) / (1 kN / mm) or more. For example, in this embodiment, as shown in FIG. 1, at both ends of the lower support member 3 in the first direction X1, the lower support member 3 and the lower cross member LB are pressed against each other in the second direction X2, and the lower support member 3 and the lower cross member LB are fixed to each other. By fixing both ends of the lower support member 3 in the first direction X1 to the lower cross member LB in this way, the rotational rigidity of the lower support member 3 relative to the lower cross member LB can be increased and the relative rotation of the lower support member 3 relative to the lower cross member LB can be suppressed. In addition, it is also possible to adjust the length of the lower support member 3 in the first direction X1 by lengthening it, thereby making it possible to adjust the rotational rigidity of the lower support member 3 relative to the lower cross member LB, for example.

[0033] The lower support member 3 and the lower cross member LB may be fixed to each other so as to be pressed against each other in the second direction X2, and the fixing method is not particularly limited. In this embodiment, as shown in Fig. 1 and Figs. 5 to 7, the lower support member 3 and the lower cross member LB are fixed to each other via a support member fixing member 7. Note that, although the support member fixing member 7 will be described below using the fixing between the lower support member 3 and the lower cross member LB as an example, the support member fixing member 7 can be applied to the fixing between the upper support member 2 and the upper cross member UB in a manner similar to that described below.

[0034] 5 to 7, the support member fixing member 7 includes a support member side fixing part 71 fixed to the lower support member 3, a cross member side fixing part 72 fixed to the lower cross member LB, and a connecting part 73 connecting the support member side fixing part 71 and the cross member side fixing part 72. The constituent material of the support member fixing member 7 is not particularly limited as long as it has a strength higher than at least the lower cross member LB (and the upper cross member UB) and the lower support member 3 (and the upper support member 2), and it is formed of a hard material such as steel.

[0035] The support member side fixing part 71 is a part that is fixed by contacting the lower support member 3. As shown in Figs. 5 to 7, the support member side fixing part 71 includes a pair of fixing plates 71a, 71a fixed to the side surfaces of the lower support member 3 in the third direction X3, and a connecting plate 71b that connects the ends of the pair of fixing plates 71a, 71a on the lower cross member LB side in the second direction X2. The pair of fixing plates 71a, 71a are each formed in a plate shape extending along the first and second directions X1, X2, and are arranged to abut against the side surfaces of the lower support member 3 with the lower support member 3 sandwiched therebetween in the third direction X3. The connecting plate 71b is formed in a plate shape extending along the first and third directions X1, X3, and is arranged to abut against the lower surface 33 of the lower support member 3 in the second direction X2. The support member side fixing part 71 is fixed to the lower support member 3 by fixing the pair of fixing plates 71a, 71a to both side surfaces of the lower support member 3 with fixing devices B3 such as screws that penetrate the fixing plate 71a along the third direction X3 and extend into the inside of the lower support member 3. By fixing the support member side fixing part 71 to the lower support member 3 with screws, no clearance is generated between the screws and the lower support member 3, so that the relative movement between the lower support member 3 and the support member side fixing part 71 can be suppressed. The support member fixing member 7 suppresses the relative movement of the lower support member 3 in the third direction X3 with respect to the lower cross member LB by fixing the pair of fixing plates 71a, 71a to the lower support member 3 with the lower support member 3 sandwiched therebetween in the third direction X3. In addition, the supporting member fixing member 7 suppresses relative movement of the lower supporting member 3 in the second direction X2 with respect to the lower cross member LB by the connecting plate 71b abutting and fixing to the lower surface 33 of the lower supporting member 3 in the second direction X2.

[0036] The cross member side fixing part 72 is a part that is fixed by contacting the lower cross member LB. As shown in Figs. 5 to 7, the cross member side fixing part 72 is provided so as to face the lower cross member LB in the second direction X2, and is fixed so as to be pressed against the lower cross member LB. The cross member side fixing part 72 is formed in a plate shape extending along the first and third directions X1 and X3, and is arranged so as to be in contact with the upper surface of the lower cross member LB in the second direction X2. The cross member side fixing part 72 is fixed by the fixing device B4 so as to be pressed against the lower cross member LB. In this embodiment, the fixing device B4 is a combination of a fixing bolt and a nut that penetrate the cross member side fixing part 72 and the lower cross member LB along the second direction X2. The fixing device B4 fastens the cross member side fixing part 72 and the lower cross member LB by drawing them closer to each other in the second direction X2 by fastening the fixing bolt and the nut together. The supporting member fixing member 7 is fixed so that the cross member side fixing part 72 is pressed against the lower cross member LB, thereby resisting the tensile force that tries to pull the lower supporting member 3 and the lower cross member LB apart from each other, and suppresses the relative movement of the lower supporting member 3 in the second direction X2 with respect to the lower cross member LB. Note that the fixing device B4 only needs to be able to fasten the cross member side fixing part 72 and the lower cross member LB by drawing them closer to each other in the second direction X2, and may be, for example, a screw extending along the second direction X2, other than a combination of a fixing bolt and a nut.

[0037] The connecting portion 73 connects the supporting member side fixing portion 71 and the cross member side fixing portion 72 to each other in the second direction X2, and supports the supporting member side fixing portion 71 and the cross member side fixing portion 72 relative to each other. The connecting portion 73 is composed of three plate-shaped plates that extend along the second and third directions X2 and X3 and are arranged at a distance from each other in the first direction X1. The connecting portion 73 increases the rotational rigidity of the supporting member side fixing portion 71 relative to the cross member side fixing portion 72 in the third direction X3 by extending each plate along the second and third directions X2 and X3. In addition, the connecting portion 73 increases the rotational rigidity of the supporting member side fixing portion 71 relative to the cross member side fixing portion 72 in the first direction X1 by arranging each plate at a distance from each other along the first direction X1.

[0038] The vibration damping device 4 is a device that damps vibration energy transmitted from the upper cross member UB and the lower cross member LB via the upper support member 2 and the lower support member 3. In this embodiment, as shown in Fig. 1, the vibration damping device 4 is joined to the upper support member 2 via an upper metallic joint member 5, and joined to the lower support member 3 via a lower metallic joint member 6. Therefore, the vibration damping device 4 damps the vibration energy transmitted through the upper and lower joint members 5 and 6.

[0039] The vibration damping device 4 is not particularly limited in its configuration as long as it can attenuate the transmitted vibration energy. For example, a known steel damper, lead damper, viscoelastic damper, oil damper, etc. can be used as the vibration damping device 4. In this embodiment, as shown in Figs. 8 to 10, the vibration damping device 4 includes an upper fixed plate 41 fixed to a later-described fixed portion 52 of the upper joint member 5, a lower fixed plate 42 fixed to a later-described fixed portion 62 of the lower joint member 6, and a damper plate 43 extending between the upper fixed plate 41 and the lower fixed plate 42 and formed of a low-yield point steel material. In the vibration damping device 4 in this embodiment, the damper plate 43 is plastically deformed when vibration energy is transmitted, thereby attenuating the vibration energy. In a wooden building, a larger deformation occurs than in a steel-framed building, but by providing the damper plate 43 formed of a low-yield point steel material as in this embodiment, it is possible to attenuate the vibration energy by following such a large deformation.

[0040] The upper and lower fixed plates 41, 42 are fixed to the upper and lower joining members 5, 6, respectively, and transmit vibration energy transmitted through the upper and lower joining members 5, 6 to the damper plate 43. In this embodiment, the upper and lower fixed plates 41, 42 are formed in a plate shape extending along the first and second directions X1, X2, respectively, as shown in Figs. 8 to 10. The upper and lower fixed plates 41, 42 only need to have a strength that does not plastically deform before the damper plate 43 plastically deforms when vibration energy is transmitted through the upper and lower joining members 5, 6, and are not particularly limited, but may be formed of, for example, ordinary steel having a higher yield point than the damper plate 43.

[0041] When vibration energy is transmitted through the upper and lower fixed plates 41 and 42, the damper plate 43 plastically deforms with priority over the upper and lower fixed plates 41 and 42 to attenuate the vibration energy. For example, in FIG. 1, when the upper and lower cross members UB and LB are displaced relative to each other in the first direction X1, the upper and lower support members 2 and 3 are displaced relative to each other in the first direction X1, and the damper plate 43 is subjected to a shear force along the first direction X1. When the damper plate 43 is subjected to a shear force of a predetermined magnitude or more, it plastically deforms to attenuate the vibration energy. In this embodiment, as shown in FIG. 8 and FIG. 9, the damper plate 43 is formed in a plate shape extending along the first and second directions X1 and X2, and is formed so as to become thinner toward the center of the damper plate 43 in a plane (the paper surface of FIG. 8) including the first and second directions X1 and X2 (see the thin-walled portion 43a). This makes it possible to disperse stress throughout the damper plate 43 when vibration energy is transmitted to the damper plate 43, and to prevent stress from concentrating near the connection portions of the damper plate 43 with the upper and lower fixed plates 41, 42. Therefore, localized damage near the connection portions of the damper plate 43 with the upper and lower fixed plates 41, 42 is prevented.

[0042] In this embodiment, as shown in Fig. 8, the damper plate 43 has a shape (approximately rectangular in the illustrated example) having a short axis along the first direction X1 and a long axis along the second direction X2 in a front view. In this way, the damper plate 43 is formed to have a long axis along the second direction X2 perpendicular to the first direction X1 in which the upper and lower cross members UB and LB extend, so that vibration energy can be damped by following large deformation along the first direction X1. From this viewpoint, the ratio of the length of the damper plate 43 in the first direction X1 to the length in the second direction X2 is preferably within a range of 1:1 to 1:2, and more preferably within a range of 1:1.1 to 1:1.5. In this embodiment, the damper plate 43 is formed in a shape having a short axis along the first direction X1 and a long axis along the second direction X2 in a front view, and accordingly, the thin-walled portion 43a of the damper plate 43 is formed in a shape (approximately elliptical in the illustrated example) having a short axis along the first direction X1 and a long axis along the second direction X2 in a front view. The thin-walled portion 43a of the approximately elliptical shape is formed to become thinner toward the center of the approximately ellipse.

[0043] The upper and lower joint members 5, 6 respectively join the vibration damping device 4 to the upper and lower support members 2, 3, and transmit vibration energy transmitted from the upper and lower cross members UB, LB to the upper and lower support members 2, 3, respectively, to the vibration damping device 4. As shown in Figs. 8 to 10, the upper and lower joint members 5, 6 each include a main body portion 51, 61, a fixing portion 52, 62, and a support portion 53, 63. The upper and lower joint members 5, 6 each include a main body portion 51, 61, a fixing portion 52, 62, and a support portion 53, 63 integrally formed therewith. The upper and lower joint members 5, 6 each may include a rib 54, 64 extending along the second and third directions X2, X3 and connected between the main body portion 51, 61 and the fixing portion 52, 62. The upper and lower joining members 5, 6 are provided with ribs 54, 64, which suppress deformation of the main body parts 51, 61 in the second direction X2, etc., and deformation of the fixing parts 52, 62 in the third direction X3, etc. The upper and lower joining members 5, 6 may be made of a metal having a strength such that they are not deformed at least before the vibration damping device 4 is deformed when transmitting vibration energy, and are not particularly limited, but may be made of a hard metal material such as steel, for example.

[0044] As shown in Figs. 8 to 10, the main body parts 51, 61 of the upper and lower joint members 5, 6 are fixed to the lower surface 22 of the upper support member 2 and the upper surface 32 of the lower support member 3, respectively. The main body parts 51, 61 of the upper and lower joint members 5, 6 are pressed in a direction approaching each other in the second direction X2 against the upper and lower support members 2, 3, respectively, and are fixed to the lower surface 22 of the upper support member 2 and the upper surface 32 of the lower support member 3, respectively. As a result, even if a tensile force is generated between the upper and lower joint members 5, 6 including the main body parts 51, 61 and the upper and lower support members 2, 3 in the second direction X2, which tries to pull them apart from each other, the tensile force is resisted, thereby suppressing the relative movement of the upper and lower joint members 5, 6 with respect to the upper and lower support members 2, 3 in the second direction X2. For example, when the upper cross member UB and the lower cross member LB are displaced relative to each other in the first direction X1, a force is applied to the upper and lower connecting members 5, 6 in a direction in which the upper and lower connecting members 5, 6 rotate relative to the upper and lower supporting members 2, 3 within a plane (the plane of FIG. 8 ) including the first and second directions X1, X2. If the upper and lower connecting members 5, 6 rotate relative to the upper and lower supporting members 2, 3, the displacement of the upper and lower cross members UB, LB cannot be accurately transmitted to the upper and lower connecting members 5, 6 via the upper and lower supporting members 2, 3. In contrast, in the present embodiment, the relative movement of the upper and lower connecting members 5, 6 in the second direction X2 relative to the upper and lower support members 2, 3 is suppressed, and therefore the relative rotation of the upper and lower connecting members 5, 6 relative to the upper and lower support members 2, 3 is suppressed. As a result, when transmitting the displacement of the upper and lower cross members UB, LB from the upper and lower support members 2, 3 to the upper and lower connecting members 5, 6, transmission loss can be reduced and the displacement can be transmitted more accurately.

[0045] The respective main body portions 51, 61 of the upper and lower joining members 5, 6 only need to be fixed to the upper and lower supporting members 2, 3 so as to be pressed at least in the second direction X2 against the upper and lower supporting members 2, 3, and there are no particular limitations on their shapes or fixing method. In this embodiment, the main body portions 51, 61 are formed in plate shapes extending along the first and third directions X1, X3 as shown in Figs. 8 to 10, and are disposed so as to abut against the lower surface 22 of the upper supporting member 2 and the upper surface 32 of the lower supporting member 3. The main body portions 51, 61 are fixed to the lower surface 22 of the upper supporting member 2 and the upper surface 32 of the lower supporting member 3 by a fixing device B5. In this embodiment, the fixture B5 is a combination of a fixing bolt and a nut penetrating at least a part of the main body 51, 61 and the upper and lower support members 2, 3. The fixture B5 is provided to extend along the second direction X2 from the end face of the main body 51, 61 opposite to the upper and lower support members 2, 3, through the lower face 22 of the upper support member 2 and the upper face 32 of the lower support member 3, to the cavities 23, 34 formed inside the upper and lower support members 2, 3 in the second direction X2. The fixture B5 fastens the fixing bolt and the nut together, drawing the main body 51, 61 and the upper and lower support members 2, 3 toward each other in the second direction X2. In addition, the fixing device B5 only needs to be able to fix the main body portions 51, 61 and the upper and lower support members 2, 3 by drawing them closer to each other in the second direction X2, and may be, for example, a screw extending along the second direction X2 other than a combination of a fixing bolt and a nut.

[0046] As shown in Figs. 8 to 10, the fixing portions 52, 62 of the upper and lower connecting members 5, 6 extend from the main body portions 51, 61 toward the vibration damping device 4 and are portions fixed to the vibration damping device 4. The fixing portions 52, 62 are fixed to the vibration damping device 4 so that relative movement with respect to the vibration damping device 4 is suppressed. This allows the upper and lower connecting members 5, 6 to suppress transmission loss and transmit the displacement more accurately when transmitting the displacement transmitted to the upper and lower connecting members 5, 6 to the vibration damping device 4.

[0047] The fixing parts 52, 62 may be fixed to the vibration damping device 4 so that the relative movement with respect to the vibration damping device 4 is suppressed, and the shape and the fixing method are not particularly limited. In this embodiment, the fixing parts 52, 62 are formed in a plate shape extending along the first and second directions X1, X2, as shown in Figs. 8 to 10, and are erected along the second direction X2 from approximately the center of the main body parts 51, 61 in the third direction X3. Each of the fixing parts 52, 62 is fixed to each of the upper and lower fixing plates 41, 42 of the vibration damping device 4 by a fixing device B6 such as a combination of a bolt and a nut that penetrates the fixing parts 52, 62 and the upper and lower fixing plates 41, 42 along the third direction X3. Here, the fixing parts 52, 62 and the upper and lower fixing plates 41, 42 are both made of metal, and are butted against each other and firmly fixed with high tensile bolts or the like, thereby frictionally joining each other and suppressing the relative movement with respect to each other.

[0048] The support portions 53, 63 of the upper and lower joining members 5, 6 extend from the main body portions 51, 61 toward the upper and lower support members 2, 3, respectively, and are embedded in the upper and lower support members 2, 3, respectively, as shown in Figs. 8 to 10. The support portions 53, 63 of the upper and lower joining members 5, 6 are embedded in the upper and lower support members 2, 3, respectively, so as to directly or indirectly abut the upper and lower support members 2, 3, respectively, on both sides in the first direction X1. In other words, the support portions 53, 63 are embedded in the upper and lower support members 2, 3 without providing any clearance between the support portions 53, 63 and the upper and lower support members 2, 3 in the first direction X1. As a result, when the upper and lower support members 2, 3 are displaced in the first direction X1 in conjunction with the displacement of the upper and lower cross members UB, LB in the first direction X1, the relative movement between the upper and lower connecting members 5, 6 and the upper and lower support members 2, 3 in the first direction X1 is suppressed, thereby reducing loss when transmitting the displacement of the upper and lower cross members UB, LB in the first direction X1 to the upper and lower connecting members 5, 6 and enabling the displacement to be transmitted more accurately.

[0049] The support parts 53, 63 are only required to be embedded in the upper and lower support members 2, 3 so as to directly or indirectly abut the upper and lower support members 2, 3 on at least both sides of the first direction X1, and their shapes and embedding methods are not particularly limited. In this embodiment, the support parts 53, 63 are formed so as to extend in a direction (third direction X3) approximately perpendicular to a plane including the first and second directions X1, X2, as shown in Figures 8 to 10. In other words, the support parts 53, 63 are formed so as to expand within a plane including the second and third directions X2, X3. In this way, the support parts 53, 63 are formed to expand in a plane including the second and third directions X2, X3 substantially perpendicular to the first direction X1, so that they can be displaced together with the widening parts 22, 32 while being suppressed from being deformed by strongly resisting the shear force along the first direction X1 received from the upper and lower support members 2, 3, and can more accurately transmit the displacement in the first direction X1 of the upper and lower cross members UB, LB transmitted through the upper and lower support members 2, 3. In addition, the support parts 53, 63 are formed to extend along the third direction X3, so that the resistance to the shear force in the first direction X1 can be increased, and the length in the second direction X2 can be shortened. As a result, the buried recesses provided in the upper and lower support members 2, 3 can be made shallow, and the strength of the support parts 53, 63 can be maintained high.

[0050] 8, in this embodiment, the support portions 53, 63 of the upper and lower joining members 5, 6 are embedded in the upper and lower supporting members 2, 3, respectively, so as to indirectly abut on the upper and lower supporting members 2, 3 via the gap adjusting material G on both sides in the first direction X1. By using the gap adjusting material G to abut the support portions 53, 63 on both sides in the first direction X1 against the upper and lower supporting members 2, 3, precise design accuracy is not required for the support portions 53, 63 and the embedding recesses of the upper and lower supporting members 2, 3 in which the support portions 53, 63 are embedded, so that the support portions 53, 63 and the upper and lower supporting members 2, 3 can be manufactured inexpensively and easily. However, the support portions 53, 63 may be embedded in the upper and lower support members 2, 3 so as to directly contact the upper and lower support members 2, 3 on both sides in the first direction X1 without the gap adjusting material G therebetween.

[0051] The gap adjusting material G is not particularly limited as long as it can fill the gaps between the support parts 53, 63 and the upper and lower support members 2, 3 on both sides in the first direction X1. The gap adjusting material G can be made of a known resin such as an epoxy resin. For example, the gap adjusting material G can be inserted into the gaps between the support parts 53, 63 and the upper and lower support members 2, 3 on both sides in the first direction X1 after the support parts 53, 63 are inserted into the embedded recesses of the upper and lower support members 2, 3.

[0052] As described above, in the vibration-damping structure 1 of this embodiment, the main body parts 51, 61 of the upper and lower joining members 5, 6 to which the vibration-damping device 4 is fixed are pressed in the second direction X2 in a direction approaching the upper and lower support members 2, 3, respectively, and fixed to the lower surface 22 of the upper support member 2 and the upper surface 32 of the lower support member 3, respectively. This suppresses the relative movement of the upper and lower joining members 5, 6 to the upper and lower support members 2, 3 in the second direction X2, and accordingly suppresses the relative rotation of the upper and lower joining members 5, 6 to the upper and lower support members 2, 3. Furthermore, in the vibration-damping structure 1 of this embodiment, the support parts 53, 63 of the upper and lower joining members 5, 6 are embedded in the upper and lower support members 2, 3, respectively, so as to directly or indirectly abut on the upper and lower support members 2, 3, respectively, on both sides in the first direction X1. This suppresses the relative movement between the upper and lower joint members 5, 6 and the upper and lower support members 2, 3 in the first direction X1. Therefore, in the vibration-damping structure 1 of this embodiment, when the upper and lower cross members UB, LB are displaced relative to each other in the first direction X1, the relative movement of the upper and lower joint members 5, 6 to the upper and lower support members 2, 3 is suppressed in both the first and second directions X1, X2 from the initial stage of the relative displacement, so that the loss when the displacement of the upper and lower cross members UB, LB in the first direction X1 is transmitted to the upper and lower joint members 5, 6 can be suppressed, and the displacement can be transmitted more accurately. As a result, the vibration-damping structure 1 of this embodiment can exhibit better vibration-damping performance.

[0053] As shown in FIG. 1 and FIG. 11, the vibration-damping structure 1 may include an out-of-plane restraining member 8 that suppresses the vibration-damping device 4 from deforming outward in a direction (third direction X3) substantially perpendicular to a plane including the first and second directions X1 and X2. In the illustrated example, the out-of-plane restraining member 8 is connected to each of the upper and lower support members 2 and 3 so as to abut against each of the upper and lower support members 2 and 3 in a direction (third direction X3) substantially perpendicular to a plane including the first and second directions X1 and X2. As a result, when the upper and lower support members 2 and 3 attempt to move relative to each other in the third direction X3, the out-of-plane restraining member 8 becomes an obstacle to the relative movement, so that the deformation of the vibration-damping device 4 in the third direction X3 caused by the relative movement of the upper and lower support members 2 and 3 in the third direction X3 can be suppressed. By suppressing the deformation of the vibration-damping device 4 in the third direction X3 in this way, the vibration-damping performance of the vibration-damping device 4 can be maintained.

[0054] The out-of-plane restraint member 8 is not particularly limited in shape as long as it can suppress the relative movement of the upper and lower support members 2, 3 in the third direction X3 and suppress the deformation of the vibration damping device 4 in the third direction X3. In this embodiment, as shown in Fig. 1 and Fig. 11, the out-of-plane restraint member 8 is formed so as to be in surface contact with the side surfaces of the upper and lower support members 2, 3 in the third direction X3 on a surface approximately perpendicular to the third direction X3. By being in surface contact with the upper and lower support members 2, 3 on a surface approximately perpendicular to the third direction X3, the out-of-plane restraint member 8 increases the resistance force against the relative movement of the upper and lower support members 2, 3 in the third direction X3, and the relative movement of the upper and lower support members 2, 3 in the third direction X3 can be more reliably suppressed. The out-of-plane restraint member 8 preferably has the strength to resist the pressing force received in the third direction X3 from the upper and lower support members 2, 3 when the upper and lower support members 2, 3 attempt to move relative to each other in the third direction X3, and is preferably formed from a hard material such as steel.

[0055] The out-of-plane restraint member 8 is further connected to each of the upper and lower support members 2, 3 so as to be rotatable about the axes Y1, Y2 extending in a direction (third direction X3) substantially perpendicular to a plane including the first and second directions X1, X2. As a result, when the upper and lower cross members UB, LB move relative to each other in the first direction X1 and the upper and lower support members 2, 3 move relative to each other in the first direction X1, the out-of-plane restraint member 8 rotates relative to the upper and lower support members 2, 3 about the axes Y1, Y2 extending in the third direction X3, thereby suppressing the restriction of the relative movement of the upper and lower support members 2, 3 relative to each other in the first direction X1. Therefore, the relative displacement of the upper and lower cross members UB, LB in the first direction X1 transmitted to the upper and lower support members 2, 3 can be transmitted to the upper and lower joint members 5, 6 and the vibration damping device 4 more accurately.

[0056] In this embodiment, as shown in Fig. 11, the out-of-plane restraint members 8 are provided on both side surfaces in the third direction X3 of the upper and lower support members 2, 3. The out-of-plane restraint members 8 on both sides are journaled to each other so as to be rotatable about a common axis Y1 in the upper support member 2, and are journaled to each other so as to be rotatable about a common axis Y2 in the lower support member 3. By providing the out-of-plane restraint members 8 on both sides in the third direction X3 of the upper and lower support members 2, 3, it is possible to more reliably suppress the relative movement of the upper and lower support members 2, 3 in the third direction X3. [Explanation of symbols]

[0057] 1. Vibration-damping structure 2 Upper support member 21 Convex 22 Bottom side 23 Cavity 3 Lower support member 31 Convex 32 Top side 33 Bottom side 34 Cavity 4. Vibration control device 41 Upper fixing plate 42 Lower fixing plate 43 Damper plate 43a Thin wall part 5 Upper joint member 51 Main body 52 Fixed part 53 Bearing section 54 Ribs 6 Lower joint member 61 Main body 62 Fixed part 63 Bearing section 64 Ribs 7 Fixing member for supporting member 71 Support member side fixing part 71a Fixing plate 71b Connecting plate 72 Horizontal member side fixing part 73 Connecting part 8 Out-of-plane restraints B1, B2, B3, B4, B5, B6 fixings F Pillar fixing parts F1 Pillar side fixed part F11 Side fixing plate F12 End Connection Plate F2 Horizontal member side fixing part F3 connection part F31 End connecting plate F32 Center connecting plate G Gap adjustment material LB Lower horizontal member LB1 Recess P1 First Pillar P2 Second Pillar UB Upper horizontal member UB1 Recess X1 First direction X2 Second direction X3 The third direction Y1, Y2 axes

Claims

1. A vibration-damping structure disposed between upper and lower wooden cross members each extending in a first direction and spaced apart from each other in a second direction substantially perpendicular to the first direction, The vibration damping structure is A wooden upper support member fixed to the upper cross member; A wooden lower support member fixed to the lower cross member; a vibration damping device joined to the upper support member via an upper joining member made of metal and joined to the lower support member via a lower joining member made of metal; Equipped with Each of the upper and lower joint members is a main body portion fixed to a lower surface of the upper support member and an upper surface of the lower support member; a fixing portion extending from the main body portion toward the vibration damping device and fixed to the vibration damping device; a bearing portion extending from the main body portion toward each of the upper and lower support members and embedded in each of the upper and lower support members; Equipped with the main body portions of the upper and lower joining members are pressed in the second direction toward the upper and lower support members, respectively, and fixed to the lower surface of the upper support member and the upper surface of the lower support member, respectively; The support portions of the upper and lower joint members are embedded in the upper and lower support members so as to directly or indirectly abut the upper and lower support members on both sides in the first direction. Vibration-damping structure.

2. The support portion is formed so as to extend in a direction substantially perpendicular to a plane including the first and second directions. The vibration damping structure according to claim 1.

3. The support portions of the upper and lower joining members are embedded in the upper and lower supporting members so as to indirectly contact the upper and lower supporting members via gap adjusting materials on both sides in the first direction. The vibration damping structure according to claim 1 or 2.

4. Each of the upper and lower support members is The upper and lower cross members are fitted to each other so as to abut against each of the upper and lower cross members on both sides in the first direction, The upper and lower cross members are pressed in a direction approaching each other in the second direction and fixed to each of the upper and lower cross members. The vibration damping structure according to any one of claims 1 to 3.

5. The ratio of the rotational rigidity of each of the upper and lower support members relative to each of the upper and lower cross members in a plane including the first and second directions to the shear rigidity of the vibration damping device in the first direction is (100 kN m / rad) / (1 kN / mm) or more, The vibration damping structure according to any one of claims 1 to 4.

6. The vibration damping device is an upper fixing plate fixed to the fixing portion of the upper joint member; a lower fixing plate fixed to the fixing portion of the lower joint member; a damper plate extending between the upper fixed plate and the lower fixed plate and made of low yield point steel; Equipped with The damper plate is formed so as to become thinner toward a center of the damper plate in a plane including the first and second directions. The vibration damping structure according to any one of claims 1 to 5.

7. the vibration damping structure includes an out-of-plane restraining member that restrains the vibration damping device from deforming outward in a direction substantially perpendicular to a plane that includes the first and second directions; the out-of-plane restraint member is connected to each of the upper and lower support members so as to abut against each of the upper and lower support members in a direction substantially perpendicular to a plane including the first and second directions; the out-of-plane restraint member is connected to each of the upper and lower support members so as to be rotatable about an axis extending in a direction generally perpendicular to a plane including the first and second directions; The vibration damping structure according to any one of claims 1 to 6.

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