Vibration absorbing device and building equipped therewith

Abstract

To provide a vibration absorbing device of a building capable of properly performing strength design in tension and compression.SOLUTION: The vibration absorbing device 7 includes a vibration absorbing mechanism 7a, and a connection mechanism 7a for connecting the vibration absorbing mechanism 7b to a connection object (the base 2 or the surface material 5). The vibration absorbing mechanism 7a has a reactive force characteristic of generating a substantially constant first reactive force regardless of a compression amount in a compression range exceeding a predetermined compression amount and generating a second reactive force larger than the first reactive force in a specific tension range exceeding a predetermined tension amount having a displacement amount equal to and opposite to the predetermined compression amount. The connection mechanism 7b is provided with a superelastic part composed of superelastic alloys having elongation characteristics of elongating and deforming in the second direction while generating substantially the same reactive force as the first reactive force regardless of a tensile amount in a specific tensile range.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a vibration absorber for a building.

Background Art

[0002] Conventionally, for example, a seismic isolation structure described in Patent Document 1 has been known.

[0003] The seismic isolation structure described in Patent Document 1 includes a rectangular frame body composed of a pair of columns, beams, and a base, a facing material provided in the rectangular frame body, and a seismic damper provided between the upper and lower sides of the facing material and the beams and the base.

[0004] Both side edges of the facing material are fixed to the respective pair of columns by fixtures.

[0005] Therefore, when the beams and the base are displaced relative to each other in different horizontal directions due to vibrations applied to the building by an earthquake or the like, a part of the gap between the upper and lower sides of the facing material and the beams and the base becomes narrower, and the other part becomes wider.

[0006] The seismic damper absorbs vibrations by converting vibration energy into heat energy by compressing or stretching and deforming according to the relative displacement between the facing material and the beams and the base as described above.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0008] While dampers exist with various characteristics, some dampers have the characteristic that the reaction force generated during tension is greater than the reaction force generated during compression. When such dampers are used, the following problems arise.

[0009] If the strength design of the surrounding structure where the damper is attached is based on the reaction force generated during compression, the strength will be insufficient during tension.

[0010] On the other hand, if the strength design of the surrounding structure where the damper is attached is based on the reaction force during tension, it will result in excessive strength being applied to the structure during compression.

[0011] The object of the present invention is to provide a vibration absorbing device and a building equipped therewith, which have a vibration absorbing mechanism having the characteristic that the reaction force generated during tension is greater than the reaction force generated during compression, and which allows for appropriate strength design during tension and compression. [Means for solving the problem]

[0012] To solve the above problems, the first invention is a vibration absorbing device for absorbing vibrations in a building, the building comprising: a pair of opposing members extending in a predetermined first direction and arranged apart from each other in a second direction perpendicular to the first direction, each having opposing member-side surfaces facing each other in the second direction; a pair of facing surface-side surfaces of the pair of opposing members facing each other in the second direction; a surface material having surfaces arranged along the first and second directions and provided between the pair of opposing members; and a mounting mechanism for attaching the surface material to the pair of opposing members such that the facing surface-side surfaces are inclined with respect to the opposing member-side surfaces when the pair of opposing members are displaced relative to each other in the first direction, wherein the vibration absorbing device provides vibration absorption in a region where the distance between the opposing member-side surfaces and the facing surface-side surfaces narrows when the pair of opposing members are displaced relative to each other in one of the first directions, and The present invention provides a vibration absorbing device comprising: a vibration absorbing mechanism provided between the member-side opposing surface and the surface material-side opposing surface in a region where the distance between the member-side opposing surface and the surface material-side opposing surface widens when the pair of opposing members are relatively displaced in the other direction of the first direction; and a connection mechanism for connecting the vibration absorbing mechanism to one of the pair of opposing members or to a connecting object which is the surface material, wherein the vibration absorbing mechanism has reaction force characteristics that generate a substantially constant first reaction force regardless of the amount of compression in a compression range exceeding a predetermined amount of compression, and generate a second reaction force that is larger than the first reaction force in a specific tensile range exceeding a predetermined amount of tension which has a displacement amount equivalent to the predetermined amount of compression and in the opposite direction; and the connection mechanism comprises a superelastic part made of a superelastic alloy having elongation characteristics that deforms to stretch in the second direction while generating a substantially the same reaction force as the first reaction force regardless of the amount of tension in the specific tensile range.

[0013] According to the first invention, the member to be connected and the vibration absorption mechanism are connected by a connecting mechanism having a superelastic portion that deforms in a second direction while generating substantially the same reaction force as the first reaction force regardless of the amount of tension in a specific tensile range. Therefore, in a specific tensile range, the superelastic portion can be deformed in tensile deformation with priority over the vibration absorption mechanism, thereby making the load (reaction force) applied to the member to be connected equivalent in both compression and tension. As a result, it is possible to appropriately design the strength in tension and compression, avoiding insufficient or excessive strength in buildings.

[0014] In the vibration absorbing device of the first invention, it is preferable that the connection mechanism includes an extension member having a superelastic portion and provided across the vibration absorbing mechanism and the object to be connected, and an assembly mechanism for assembling the extension member to the vibration absorbing mechanism and the object to be connected so as to transmit tensile force to the extension member and restrict the transmission of compressive force (second invention).

[0015] According to the second invention, the assembly mechanism allows for the transmission of tensile force to the extended member while restricting the transmission of compressive force to the extended member. This prevents adverse effects on the extended member due to compressive force, while effectively utilizing the tensile properties of the superelastic portion.

[0016] In the vibration absorbing device of the second invention, the assembly mechanism preferably has a mounting member connected to the vibration absorbing mechanism and having a mounting surface that is placed on the member-side opposing surface or the surface material-side opposing surface of the object to be connected, and the extension member preferably has a mounting-side mounting portion and an object-side mounting portion attached to the mounting member and the object to be connected, respectively, so as to restrict the relative movement of the mounting member and the object to be connected in a direction away from the member-side opposing surface or the surface material-side opposing surface, and a tensile deformation portion provided between the mounting-side mounting portion and the object-side mounting portion and having the superelastic portion (third invention).

[0017] According to the third invention, by having the mounting surface placed on (in contact with) the opposing surface on the member side or the opposing surface on the panel side, it is possible to restrict the transmission of a force pressing the mounting surface against the opposing surface on the member side or the opposing surface on the panel side as a compressive force to the extending member. Furthermore, by having a tensile deformation portion provided between the mounting side mounting portion and the target side mounting portion of the extending member, a force moving the mounting surface away from the opposing surface on the member side or the opposing surface on the panel side can be effectively transmitted to the extending member as a tensile force to the tensile deformation portion.

[0018] In the vibration absorbing device of the third invention, it is preferable that the assembly mechanism has a surrounding member that surrounds the tensile deformation portion such that a space is formed around the tensile deformation portion to allow the tensile deformation of the tensile deformation portion (fourth invention).

[0019] According to the fourth invention, even when the extended member is embedded within the object to be connected, such as when the surrounding portion is embedded in the concrete constituting the foundation, the surrounding portion can create a space around the tensile deformation portion that allows for tensile deformation. Therefore, the tensile deformation portion can be reliably subjected to tensile deformation.

[0020] In the vibration absorbing device of the third or fourth invention, it is preferable that the mounting member has a mechanism connection portion to which the vibration absorbing mechanism is connected, a mounting portion having a pair of extension mounting portions and a mounting surface provided on both sides of the mechanism connection portion in a third direction perpendicular to the first and second directions and to which the mounting side mounting portion described above can be attached, and an erecting portion extending from one side to the other of the mechanism connection portion in the third direction and erected on the mounting portion described above (fifth invention).

[0021] According to the fifth invention, since the extending members are provided on both sides of the mechanism connecting portion in the third direction, the tensile force can be transmitted well-balancedly on both sides of the mechanism connecting portion. Furthermore, since the standing portions are erected across both sides of the mechanism connecting portion on the mounting portion, the bending strength of the mounting portion can be improved and the loss of the tensile force due to the bending deformation of the mounting portion can be suppressed. Therefore, it is possible to transmit the tensile force well-balancedly and surely between the facing material and the connection object.

[0022] In the vibration absorption device of the second invention to the fifth invention, it is preferable that the whole of the extending member is made of a superelastic alloy (sixth invention).

[0023] According to the sixth invention, the configuration of the extending member can be simplified as compared with the case where the superelastic portion is provided in a part of the extending member.

[0024] Further, the seventh invention provides a building, comprising: a pair of opposing members extending in a predetermined first direction and arranged apart from each other in a second direction orthogonal to the first direction, each having a member-side opposing surface facing each other in the second direction; a pair of facing material-side opposing surfaces respectively facing the member-side opposing surfaces of the pair of opposing members in the second direction; a facing material having a surface arranged along the first direction and the second direction and provided between the pair of opposing members; a mounting mechanism for mounting the facing material to the pair of opposing members such that the facing material-side opposing surface inclines with respect to the member-side opposing surface when the pair of opposing members are relatively displaced with respect to each other in the first direction; and the vibration absorption device of the first invention to the sixth invention.

Effect of the Invention

[0025] According to the present invention, there is provided a vibration absorption mechanism having a characteristic that the reaction force generated during tension is larger than the reaction force generated during compression, and the strength design during tension and compression can be appropriately performed.

Brief Description of the Drawings

[0026] [Figure 1]Figure 1 is a front view showing a part of a building equipped with a vibration absorbing device according to an embodiment of the present invention. [Figure 2] Figure 2 is a front view showing the state when a horizontal relative displacement occurs between the foundation and the beam in the building shown in Figure 1. [Figure 3] Figure 3 is a perspective view showing the relationship between the vibration absorption device shown in Figure 1 and the foundation. [Figure 4] Figure 4 is a front view showing the relationship between the vibration absorbing device and the foundation in Figure 3, with a portion of the foundation omitted. [Figure 5] Figure 5 is a plan view showing only the mounting members of the vibration absorption device shown in Figure 3. [Figure 6] Figure 6 is a side view of the vibration-absorbing member shown in Figure 3, and shows the state when no load is applied. [Figure 7] Figure 7 is a side view of the vibration-absorbing member shown in Figure 3, illustrating the state under a compressive load. [Figure 8] Figure 8 is a side view of the vibration-absorbing member shown in Figure 3, illustrating the state under which a tensile load is applied. [Figure 9] Figure 9 is a graph showing the reaction force characteristics of the vibration-absorbing member shown in Figure 3. [Figure 10] Figure 10 is a graph showing the superelastic properties of the superelastic part of the connection mechanism shown in Figure 3. [Figure 11] Figure 11 is a graph showing the reaction force characteristics of the vibration absorbing member under a tensile load and under a compressive load. [Figure 12] Figure 12 is a perspective view showing the relationship between the vibration absorbing device and the beam shown in Figure 1. [Figure 13] Figure 13 shows a modified example of the vibration absorbing device in Figure 12, with the surrounding members omitted. [Figure 14] Figure 14 shows a modified example in which the vibration absorption mechanism is connected to the surface material by a connection mechanism. [Modes for carrying out the invention]

[0027] Embodiments of the present invention will be described below with reference to the attached drawings. Note that the following embodiments are examples that embody the present invention and are not intended to limit the technical scope of the present invention.

[0028] Figure 1 is a front view showing a part of a building equipped with a vibration absorbing device according to an embodiment of the present invention.

[0029] Referring to Figure 1, the building 1 comprises a foundation 2 and beam 3 (a pair of opposing members) extending in a predetermined first direction D1 and positioned apart from each other in a second direction D2 perpendicular to the first direction D1; a pair of columns 4 provided between the foundation 2 and beam 3 with a gap in the first direction D1; a facing material 5 provided between the foundation 2 and beam 3 and between the pair of columns 4; and a mounting mechanism 6 for attaching the facing material 5 to the foundation 2 and beam 3.

[0030] Foundation 2 is erected on the ground and extends along the first direction D1. Specifically, foundation 2 comprises reinforcing bars 2b extending in the first direction D1 and concrete 2c formed so that the reinforcing bars 2b are embedded within it.

[0031] Beam 3 is supported by a pair of columns 4 and columns not shown in the figure, at a position away from the foundation 2 in the second direction D2. Beam 3 also extends parallel to the foundation 2 in the first direction D1. In this embodiment, beam 3 is a wooden beam, but it may also be a metal beam.

[0032] Furthermore, the foundation 2 and beam 3 each have opposing member-side surfaces 2a and 3a that face each other in the second direction D2.

[0033] The pair of columns 4 extend in the second direction D2 and are connected to the foundation 2 and beam 3, respectively.

[0034] The facing material 5 has a facing material side surface 5a that faces the member side facing surface 2a of the foundation 2 in the second direction D2, a facing material side surface 5b that faces the member side facing surface 3a of the beam 3 in the second direction D2, and a surface 5c arranged along the first direction D1 and the second direction D2.

[0035] The mounting mechanism 6 is for attaching the facing material 5 to the foundation 2 and beam 3 such that when the foundation 2 and beam 3 are displaced relative to each other in the first direction D1, the facing material side surfaces 5a and 5b are inclined with respect to the opposing member side surfaces 2a and 3a. Specifically, the mounting mechanism 6 has a foundation-side mounting mechanism 6A provided between the facing material 5 and the foundation 2, and a beam-side mounting mechanism 6B provided between the facing material 5 and the beam 3. The foundation-side mounting mechanism 6A and the beam-side mounting mechanism 6B have substantially the same configuration except that the destination of the facing material 5 is either the foundation 2 or the beam 3. Therefore, the configuration of the foundation-side mounting mechanism 6A will be described below, and the same reference numerals as those used for the foundation-side mounting mechanism 6A will be used for the beam-side mounting mechanism 6B, while the description of the beam-side mounting mechanism 6B will be omitted.

[0036] The foundation-side mounting mechanism 6A includes a bracket 6a extending from the member-side opposing surface 2a toward the facing material 5, a bracket 6b extending from the facing material-side opposing surface 5a toward the foundation 2, and a connecting shaft 6c that rotatably connects bracket 6a and bracket 6b. Bracket 6b has a pair of clamping pieces (only one is shown in Figure 1) that sandwich bracket 6a from both sides in a third direction D3 perpendicular to the first direction D1 and the second direction D2. The connecting shaft 6c extends in the third direction D3 so as to penetrate the pair of clamping pieces of bracket 6a and bracket 6b. As a result, the foundation 2 and the facing material 5 are rotatably connected to each other about the connecting shaft 6c extending in the third direction D3. Similarly, beam 3 and facing material 5 are rotatably connected to each other about the connecting shaft 6c extending in the third direction D3. Furthermore, since the foundation-side mounting mechanism 6A and the beam-side mounting mechanism 6B are located at the center of the first direction D1 of the facing material 5, when the foundation 2 and the beam 3 are displaced relative to each other in the first direction D1, the distance between the opposing surfaces 2a and 3a on the member side and the opposing surfaces 5a and 5b on the facing material side changes as follows. Hereinafter, of the distance between the opposing surface 2a on the member side and the opposing surface 5a on the facing material side, the region on one side of the foundation-side mounting mechanism 6A in the first direction D1 (left side in Figure 1) will be R1, and the region on the other side of the first direction D1 (right side in Figure 1) will be R2. Similarly, of the distance between the opposing surface 3a on the member side and the opposing surface 5b on the facing material side, the region on one side of the beam-side mounting mechanism 6B in the first direction D1 (left side in Figure 1) will be R3, and the region on the other side of the first direction D1 (right side in Figure 1) will be R4.

[0037] For example, as shown in Figure 2, when the foundation 2 is displaced relative to the beam 3 in one direction D1 (left in Figure 2), the gap between the member-side opposing surface 2a and the facing surface 5a widens in region R1, and the gap between the member-side opposing surface 2a and the facing surface 5a narrows in region R2. Furthermore, the gap between the member-side opposing surface 3a and the facing surface 5b narrows in region R3, and the gap between the member-side opposing surface 3a and the facing surface 5b widens in region R4.

[0038] Contrary to Figure 2, when the foundation 2 is displaced relative to the beam 3 in the other direction D1 (to the right in Figure 2), the gap between the member-side opposing surface 2a and the panel-side opposing surface 5a narrows in region R1, and the gap between the member-side opposing surface 2a and the panel-side opposing surface 5a widens in region R2. Furthermore, the gap between the member-side opposing surface 3a and the panel-side opposing surface 5b widens in region R3, and the gap between the member-side opposing surface 3a and the panel-side opposing surface 5b narrows in region R4.

[0039] Furthermore, building 1 is equipped with four vibration absorbing devices 7, each located in regions R1 to R4, to absorb vibrations within building 1. The four vibration absorbing devices 7 have the same configuration except for the fact that they are connected to either the foundation 2 or the beams 3. Therefore, the configuration of the vibration absorbing device 7 located in region R1 will be described below, and the differences in configuration due to the different connection points will be explained separately.

[0040] Referring to Figures 3 to 6, the vibration absorbing device 7 comprises a vibration absorbing mechanism 7a provided between the member-side opposing surface 2a and the surface material-side opposing surface 5a, and a connection mechanism 7b for connecting the vibration absorbing mechanism 7a to the foundation 2 (corresponding to the object to be connected).

[0041] As shown in Figure 9, the vibration absorption mechanism 7a has a reaction force characteristic in which, in a compression range PR exceeding a predetermined amount of compression (displacement -D), it generates a substantially constant first reaction force (load -L) regardless of the amount of compression, while in a specific tensile range TR exceeding a predetermined amount of tension having a displacement +D equivalent to and opposite to the displacement -D, it generates a second reaction force that is larger than the first reaction force (+L).

[0042] Referring to Figures 3 and 4, the vibration absorption mechanism 7a has the reaction force characteristics shown in Figure 9 and includes a pair of vibration absorbing members 7a1 aligned in the first direction D1.

[0043] Since the pair of vibration absorbing members 7a1 each have similar configurations, the configuration of one vibration absorbing member 7a1 will be described, and the description of the other vibration absorbing member 7a1 will be omitted. As shown in Figures 3 and 6, the vibration absorbing member 7a1 has a pair of absorbing pieces 7a1a and 7a1b facing each other in the third direction D3. The absorbing pieces 7a1a and 7a1b each have similar configurations and are arranged symmetrically in the third direction D3, as shown in Figure 6. The absorbing pieces 7a1a and 7a1b each have a connecting portion 7a1c connected to a connected portion 5a1 extending in the second direction D2 from the surface 5a of the surface material 5 toward the foundation 2, a connecting portion 7a1d connected to a mechanism connecting portion 7b3a which will be described later, and an elastically deformable portion 7a1e provided between the connecting portion 7a1c and the connecting portion 7a1d. The connecting portion 7a1c of both absorbing pieces 7a1a and 7a1b is fixed to the connected portion 5a1 by bolt B1 (see Figure 3) with the connected portion 5a1 sandwiched in a third direction D3. Similarly, the connecting portion 7a1d of both absorbing pieces 7a1a and 7a1b is fixed to the connected portion 7a2e by bolt B2 (see Figure 3) with the mechanism connecting portion 7b3a sandwiched in a third direction D3.

[0044] The elastically deformable portion 7a1e is configured to elastically deform in response to a change in the distance between the connecting portion 7a1c and the connecting portion 7a1d in the second direction D2. Specifically, the elastically deformable portion 7a1e includes an overhang portion 7a1e1 extending from the connecting portion 7a1c in a third direction D3 away from the connected portion 5a1, an overhang portion 7a1e2 extending from the connecting portion 7a1d in a third direction D3 away from the mechanism connecting portion 7b3a, and a connecting portion 7a1e3 connecting the overhang portions 7a1e1 and 7a1e2. As the connecting portion 7a1c and the connecting portion 7a1d move closer to the second direction D2, as shown in Figure 7, the internal angles between the connecting portion 7a1c and the protruding portion 7a1e1 and between the connecting portion 7a1d and the protruding portion 7a1e2 decrease, and the elastically deformed portion 7a1e deforms so that the central part of the connecting portion 7a1e3 moves away from the connecting portion 7a1c in the third direction D3. On the other hand, as the connecting portion 7a1c and the connecting portion 7a1d move further apart in the second direction D2, as shown in Figure 8, the elastically deformed portion 7a1e deforms so that the internal angles between the connecting portion 7a1c and the protruding portion 7a1e1, between the protruding portion 7a1e1 and the connecting portion 7a1e3, between the connecting portion 7a1e3 and the protruding portion 7a1e2, and between the protruding portion 7a1e2 and the connecting portion 7a1d widen.

[0045] Referring to Figures 3 to 5, the connection mechanism 7b includes eight extension members 7b1 that are provided across the vibration absorption mechanism 7a and the foundation 2, and an assembly mechanism 7b2 for assembling the extension members 7b1 to the vibration absorption mechanism 7a and the foundation 2 in such a way that tensile force is transmitted to the extension members 7b1 and the transmission of compressive force is restricted.

[0046] The extension member 7b1 bears the tensile load between the foundation 2 and the vibration absorption mechanism 7a. Furthermore, as shown in Figure 10, the extension member 7b1 is equipped with a superelastic portion made of a superelastic alloy that has elongation characteristics that cause it to deform in the second direction D2 while generating a reaction force (+L) substantially the same as the first reaction force (load corresponding to +L in Figure 9) regardless of the amount of tension (amount of strain in the figure) within the specified tensile range TR described above. Specifically, the entire extension member 7b1 of this embodiment is made of a superelastic alloy. Note that, as shown in Figure 10, when the tensile force (stress) is removed from the superelastic portion while it is deformed by tensile force, the superelastic portion irreversibly returns to its original shape with a stress progression different from that during tensile deformation.

[0047] Referring again to Figures 3 to 5, the extension member 7b1 has a mounting-side mounting portion 7b1a that is attached to the mounting member 7b3 (described later), a target-side mounting portion 7b1b that is attached to the foundation 2, and a tensile deformation portion 7b1c provided between the mounting-side mounting portion 7b1a and the target-side mounting portion 7b1b. Male threads are formed on the outer circumferential surfaces of the mounting-side mounting portion 7b1a and the target-side mounting portion 7b1b, respectively.

[0048] The assembly mechanism 7b2 includes a mounting member 7b3 connected to the vibration absorption mechanism 7a and having a mounting surface 7b3b1 that is placed on the member-side opposing surface 2a of the foundation 2; eight mounting-side mounting members 7b4 for attaching the mounting-side mounting portion 7b1a of the extension member 7b1 to the mounting member 7b3; eight target-side mounting members 7b5 for attaching the target-side mounting portion 7b1b of the extension member 7b1 to the foundation 2; and eight surrounding members 7b6 surrounding the tensile deformation portion 7b1c of the extension member 7b1 (the leftmost surrounding member 7b6 is not shown in Figure 3).

[0049] The mounting member 7b3 includes a pair of mechanism connection parts 7b3a to which the vibration absorption mechanism 7a is connected, a mounting part 7b3b having a mounting surface 7b3b1, and three erected parts 7b3c, 7b3d, and 7b3e erected on the mounting part 7b3b. The mounting part 7b3b is a plate-like portion that is roughly rectangular in plan view. The erected parts 7b3c and 7b3d extend in a third direction D3 from both ends of the mounting part 7b3b in a first direction D1. The erected part 7b3e extends in a third direction D3 from the center of the mounting part 7b3b in a first direction D1. The pair of mechanism connection parts 7b3a are aligned in the first direction D1 at the center of the mounting part 7b3b in the third direction D3. Specifically, one mechanism connection part 7b3a connects the erected part 7b3c and the erected part 7b3e. The other mechanism connection part 7b3a connects the upright parts 7b3d and 7b3e. Furthermore, as shown in Figure 5, the mounting part 7b3b is provided on both sides of the mechanism connection part 7b3a in the third direction D3 and has eight extension attachment parts 7b3f to which extension members 7b1 can be attached. The extension attachment parts 7b3f are composed of through holes that penetrate the mounting part 7b3b in the second direction D2. The eight extension attachment parts 7b3f are distributed two to each region of the mounting part 7b3b that is demarcated by the upright parts 7b3c, 7b3d, and 7b3e, and the two extension attachment parts 7b3f in each region are aligned in the first direction D1. The upright parts 7b3c to 7b3e extend from one side to the other of the mechanism connection part 7b3a in the third direction D3. Specifically, the upright portions 7b3c to 7b3 are provided in a range that can include the entirety of the extension portion attachment portion 7b3f in the third direction D3.

[0050] The mounting-side mounting member 7b4 is for attaching the extension member 7b1 to the mounting member 7b3 so as to restrict the movement of the extension member 7b1 relative to the mounting member 7b3 toward the foundation 2 in the second direction D2. Specifically, the mounting-side mounting member 7b4 consists of a nut that is screwed onto the male thread of the mounting-side mounting portion 7b1a, which is inserted from the foundation 2 side into the extension portion mounting portion 7b3f of the mounting portion 7b3b and protrudes from the mounting portion 7b3b toward the surface material 5.

[0051] The target-side mounting member 7b5 is for attaching the extension member 7b1 to the foundation 2 in such a way that it restricts the movement of the extension member 7b1 toward the facing material 5 in the second direction D2. Specifically, the target-side mounting member 7b5 is screwed onto the male thread of the target-side mounting portion 7b1b of the extension member 7b1 and consists of a nut embedded in the concrete 2c of the foundation 2. More specifically, the target-side mounting member 7b5 is embedded in the concrete 2c and is prevented from coming loose by a surrounding member 7b6 embedded in the concrete 2c in such a way that it restricts movement toward the facing material 5 in the second direction D2.

[0052] As described above, the mounting-side mounting member 7b4 and the target-side mounting member 7b5 are attached to the mounting member 7b3 and the foundation 2, respectively, in such a way that the relative movement between the mounting member 7b3 and the foundation 2 is restricted in a direction away from the mounting surface 7b3b1 from the member-side opposing surface 2a.

[0053] The surrounding member 7b6 surrounds the tensile deformation portion 7b1c such that a space S1 is formed around the tensile deformation portion 7b1c to allow for tensile deformation of the tensile deformation portion 7b1c. Specifically, the surrounding member 7b6 is a cylindrical member provided between the mounting surface 7b3b1 of the mounting portion 7b3b and the target side mounting member 7b5, and is embedded in the concrete 2c of the foundation 2.

[0054] In the vibration absorbing device 7 located in regions R3 and R4 in Figure 1, the extension member 7b1 is attached to the beam 3. The attachment structure of the extension member 7b1 to the beam 3 will be explained with reference to Figure 12.

[0055] The surrounding member 7b6 is fitted into a through hole 3b that penetrates the beam 3 in the second direction D2. The extension member 7b1 extends from the mounting member 7b3 through the cavity of the surrounding member 7b6 to the outside of the beam 3 in the second direction D2. The target-side mounting member 7b5 is screwed onto the male thread of the target-side mounting portion 7b1b of the extension member 7b1 at a position on the opposite side of the beam 3 from the face material 5 in the second direction D2. In this way, the target-side mounting member 7b5 engages with the beam 3 and the surrounding member 7b6 in such a way that the movement of the extension member 7b1 in the direction approaching the face material 5 in the second direction D2 is restricted.

[0056] Furthermore, if the target-side mounting member 7b5 is engaged with the beam 3 as described above, the surrounding member 7b6 can be omitted, as shown in Figure 13. In this case, it is preferable that a space is provided between the through-hole 3b of the beam 3 and the extending member 7b1 to allow for tensile deformation of the extending member 7b1. Furthermore, in the vibration absorbing device 7 attached to the foundation 2 shown in Figure 4, the surrounding member 7b6 can also be omitted if the target-side mounting member 7b5 is engaged with the concrete 2c in the second direction D2.

[0057] In addition, although the connection mechanism 7b attached to the foundation 2 and beam 3 has been described, the connection mechanism 7b can also be attached to the facing material 5, as shown in Figure 14. Specifically, by providing the facing material 5 with the target side mounting member 7b5 and the engaged portion 5d for engaging in the second direction D2, the connection mechanism 7b can be attached to the facing material 5 in the same way as the attachment to the beam 3 shown in Figure 12. Note that in Figure 14, the surrounding member 7b6 is fitted into the through hole 5d1 formed in the engaged portion 5d, but as mentioned above, the folding surrounding member 7b6 can also be omitted.

[0058] Furthermore, although a configuration in which the connection mechanism 7b is attached to the foundation 2, beam 3, or facing material 5 has been described, it is also possible to attach the connection mechanism 7b to both the foundation 2 and the facing material 5, or to both the beam 3 and the facing material 5.

[0059] As explained above, in the vibration absorbing device 7, as shown in Figure 10, the vibration absorbing mechanism 7a is connected to the member to be connected (foundation 2 or beam 3) by a connecting mechanism 7b having a superelastic part that deforms in a second direction D2 while generating a reaction force (+L) substantially the same as the first reaction force (load corresponding to +L in Figure 9) regardless of the amount of tension in a specific tensile range TR. Therefore, in the specific tensile range TR, the superelastic part can be deformed in tensile deformation preferentially to the vibration absorbing mechanism 7a, thereby making the load (reaction force) applied to the member to be connected equivalent in both compression and tension.

[0060] Specifically, the vibration absorber 7 can obtain the characteristics shown in Figure 11. Figure 11 is a graph showing the reaction force characteristics of the vibration absorber 7 under a tensile load and under a compressive load. In Figure 11, the absolute values ​​of the tensile load and compressive load are shown on the vertical axis. Also in Figure 11, characteristic T1 shows the reaction force characteristics of the vibration absorber 7 when a tensile load is applied, characteristic T2 shows the reaction force characteristics of the vibration absorber 7 when a compressive load is applied, characteristic T3 shows the reaction force characteristics of the superelastic part when a tensile load is applied, and characteristic T4 shows the reaction force characteristics of a vibration absorber without a superelastic part. As is clear from characteristics T1 and T2 in Figure 11, the vibration absorber 7 can obtain substantially equivalent reaction forces (reaction forces corresponding to +d) in a specific tensile range TR and a corresponding compressive range.

[0061] Therefore, it is possible to avoid insufficient or excessive strength in buildings and to perform appropriate strength design under tensile and compressive conditions.

[0062] Furthermore, the assembly mechanism 7b2 allows for the transmission of tensile force to the extension member 7b1 while restricting the transmission of compressive force to the extension member 7b1. This prevents adverse effects on the extension member 7b1 due to compressive force, while effectively utilizing the tensile properties of the superelastic portion.

[0063] Specifically, by having the mounting surface 7b3b1 placed on (in contact with) the member-side opposing surface 2a or the panel-side opposing surface 5a, it is possible to restrict the transmission of forces that press the mounting surface 7b3b1 against the member-side opposing surface 2a or the panel-side opposing surface 5a as a compressive force to the extending member 7b1. Furthermore, by having a tensile deformation portion 7b1c provided between the mounting-side mounting portion 7b1a and the target-side mounting portion 7b1b, forces that move the mounting surface 7b3b1 away from the member-side opposing surface 2a or the panel-side opposing surface 5a can be effectively transmitted to the extending member 7b1 as a tensile force to the tensile deformation portion 7b1c.

[0064] Furthermore, as shown in Figures 4 and 12, the vibration absorbing device 7 allows the surrounding member 7b6 to create a space around the tensile deformation portion 7b1c that allows tensile deformation, even when the extended member 7b1 is enclosed within the object to be connected (foundation 2 or face material 5). Therefore, the tensile deformation portion 7b1c can be reliably subjected to tensile deformation.

[0065] With the vibration absorbing device 7, since extension members 7b1 are provided on both sides of the mechanism connection part 7b3a in the third direction D3, tensile force can be transmitted in a balanced manner on both sides of the mechanism connection part 7b3a. Furthermore, since vertical parts 7b3c to 7b3e are erected on both sides of the mechanism connection part 7b3a in the mounting part 7b3b, the bending strength of the mounting part 7b3b can be improved, and the loss of tensile force due to bending deformation of the mounting part 7b3b can be suppressed. Therefore, it is possible to transmit tensile force in a balanced manner and reliably between the surface material 5 and the object to be connected (foundation 2 or surface material 5).

[0066] Since the entire extension member 7b1 is made of a superelastic alloy, the structure of the extension member 7b1 can be simplified compared to the case where a superelastic portion is provided in part of the extension member 7b1. However, this does not mean to exclude the provision of a superelastic portion in part of the extension member 7b1. For example, the elastically deformable portion 7a1e may have a superelastic portion.

[0067] Furthermore, although the vibration absorbing device 7 suppresses the transmission of compressive force to the extended member 7b1, a configuration in which compressive force is transmitted to the extended member 7b1 can also be adopted. [Explanation of Symbols]

[0068] 1 Building 2. Foundation (an example of opposing members) 2a Opposing surface on component side 3. Beam (an example of an opposing member) 3a Opposing surface on component side 5-sided material 5a Opposing surface on the facing material side 5c surface 6. Mounting mechanism 7. Vibration Absorbing Device 7a Vibration absorption mechanism 7b Connection mechanism 7b1 Extension member 7b1a Mounting side mounting section 7b1b Mounting part on the target side 7b1c Tensile deformation section 7b2 Assembly mechanism 7b3 Mounting member 7b3a Mechanism connection part 7b3b Mounting section 7b3b1 Mounting surface 7b3c, 7b3d Standing section 7b6 Surrounding member D1 First direction D2 Second direction D3 Third Direction PR compression range TR Specific Tensile Range

Claims

1. A vibration absorbing device for absorbing vibrations in a building, The aforementioned building is A pair of opposing members, each having opposing surfaces facing each other in the second direction, which is perpendicular to a predetermined first direction and is positioned apart from each other in the second direction, A pair of facing surfaces on the surface material side, which are respectively facing the member-side facing surfaces of the pair of opposing members in the second direction, and a surface material having surfaces arranged along the first direction and the second direction, provided between the pair of opposing members, The mounting mechanism includes a mounting mechanism for attaching the facing material to the pair of opposing members such that when the pair of opposing members are displaced relative to each other in the first direction, the facing surface on the facing material side is inclined with respect to the facing surface on the member side, The vibration absorbing device is A vibration absorption mechanism is provided between the member-side opposing surface and the surface-side opposing surface in a region where the distance between the member-side opposing surface and the surface-side opposing surface narrows when the pair of opposing members are displaced relative to each other in one of the first directions, and in a region where the distance between the member-side opposing surface and the surface-side opposing surface widens when the pair of opposing members are displaced relative to each other in the other of the first directions. The system includes a connection mechanism for connecting the vibration absorbing mechanism to one of the pair of opposing members or to the object to be connected, which is the surface material, The vibration absorption mechanism has a reaction force characteristic that generates a substantially constant first reaction force regardless of the amount of compression in a compression range exceeding a predetermined amount of compression, while generating a second reaction force that is larger than the first reaction force in a specific tensile range exceeding a predetermined amount of tension having a displacement amount equivalent to and opposite to the predetermined amount of compression. The connection mechanism comprises a superelastic part made of a superelastic alloy having elongation characteristics that cause it to elongate and deform in the second direction while generating substantially the same reaction force as the first reaction force regardless of the amount of tension in the specified tensile range, a vibration absorbing device.

2. The vibration absorbing device according to claim 1, wherein the connection mechanism comprises an extension member having a superelastic portion and extending across the vibration absorbing mechanism and the object to be connected, and an assembly mechanism for assembling the extension member to the vibration absorbing mechanism and the object to be connected so as to transmit tensile force to the extension member and restrict the transmission of compressive force.

3. The assembly mechanism has a mounting member that is connected to the vibration absorption mechanism and has a mounting surface that is placed on the opposing surface on the member side or the opposing surface on the surface material side of the object to be connected. The vibration absorbing device according to claim 2, wherein the extending member comprises a mounting-side mounting portion and an object-side mounting portion attached to the mounting member and the object to be connected, respectively, so as to restrict relative movement between the mounting member and the object to be connected in a direction away from the mounting surface from the member-side opposing surface or the surface material-side opposing surface, and a tensile deformation portion provided between the mounting-side mounting portion and the object-side mounting portion and having the superelastic portion.

4. The vibration absorbing device according to claim 3, wherein the assembly mechanism has a surrounding member that surrounds the tensile deformation portion such that a space is formed around the tensile deformation portion to allow the tensile deformation of the tensile deformation portion.

5. The vibration absorbing device according to claim 3 or 4, wherein the mounting member comprises a mechanism connection portion to which the vibration absorbing mechanism is connected, a mounting portion having a pair of extension mounting portions and a mounting surface provided on both sides of the mechanism connection portion in a third direction perpendicular to the first and second directions and to which the mounting side mounting portion described above can be attached, and an erecting portion extending from one side to the other of the mechanism connection portion in the third direction and erected on the mounting portion described above.

6. The vibration absorbing device according to any one of claims 2 to 4, wherein the entire extension member is made of a superelastic alloy.

7. It is a building, A pair of opposing members, each having opposing surfaces facing each other in the second direction, which is perpendicular to a predetermined first direction and is positioned apart from each other in the second direction, A pair of facing surfaces on the surface material side, which are respectively facing the member-side facing surfaces of the pair of opposing members in the second direction, and a surface material having surfaces arranged along the first direction and the second direction, provided between the pair of opposing members, A mounting mechanism for attaching the facing material to the pair of opposing members such that when the pair of opposing members are displaced relative to each other in the first direction, the facing surface on the facing material side is inclined with respect to the facing surface on the member side, A building comprising a vibration absorbing device according to any one of claims 1 to 4.

Images