Bearing and vibration control systems

Abstract

To provide a bearing and vibration damping system capable of increasing supporting force in a first direction and decreasing resistance in a second direction crossing the first direction.SOLUTION: A bearing S includes a long hole forming part 16b provided in a first support part (for example, a pillar side support part 5) on either a structure BL or a reinforcing member 7 (for example, the structure BL), a spherical slide bearing 22 provided in a second support part (for example, a reinforcement member-side support part 11) on the other than the structure BL or the reinforcement member 7 (for example, the reinforcement member 7), a movable plate 17 inserted into a long hole 16a formed by the long hole forming part 16b and movable in the longitudinal direction of the long hole 16a inside the long hole 16a, and a connecting shaft 14 which is supported in a moveable way in the longitudinal direction of the long hole 16a with the movable plate 17 against the pillar side support part 5, meanwhile is supported rotatably via the spherical slide bearing 22 with respect to the reinforcing member side support part 11 and connects the pillar side support part 5 and the reinforcing member side support part 11.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a bearing having, for example, a large vertical bearing force and a small horizontal resistance, and a vibration control system including the bearing. [Background technology]

[0002] 2. Description of the Related Art Conventionally, as a bearing and vibration control system for supporting a structure, there is known one that uses a viscoelastic body as a vibration control material (see, for example, Patent Document 1). In the vibration control device described in Patent Document 1, a pair of opposing columns that form a space between floors of a structure are each provided with a vibration control structure, and a bonding material is provided between the pair of vibration control structures.

[0003] In this vibration-damping structure, a vibration-damping material is sandwiched between a column-side mounting member attached to the side of the column and a joining material-side mounting member, and the two mounting members and the vibration-damping material are bonded together. The vibration-damping material is made of a viscoelastic material so that the joining material side mounting member and the column side mounting member can rotate relatively around a horizontal axis, and in the event of an earthquake, the vibration energy of the building is absorbed by the torsional deformation associated with the relative rotation. However, since the vibration-damping material is bonded to the column-side mounting member and the joining material-side mounting member, the horizontal resistance of the vibration-damping structure is large.

[0004] A known support that is relatively movable in the horizontal direction and has low horizontal resistance is one in which both ends of a reinforcing member are supported on the support parts of two opposing columns of a structure (see, for example, Patent Document 2). A loose hole such as a long hole is provided in the support part of the column, and a pin such as a fastening bolt is passed through the loose hole and the reinforcing member. When the structure vibrates and the column reciprocates horizontally together with the beam, the reinforcing member also reciprocates horizontally, and the pin that passes through both ends of the column moves relative to the long hole in the support part. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-64024 A [Patent Document 2] Patent Publication No. 2021-21310 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the structure of Patent Document 2, the bearing stress at the contact point between the pin and the long hole becomes large, and problems remain when using it for a support where a large vertical load acts. SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a bearing and vibration control system that can provide a large support force in a first direction and a smaller resistance in a second direction that intersects the first direction. [Means for solving the problem]

[0007] The support according to the present invention is characterized in that it comprises a long hole forming portion provided on a first support portion on one side of a structure or a member connected to the structure, a bearing provided on a second support portion on the other side of the structure or the member, a movable plate inserted into a long hole formed by the long hole forming portion and movable within the long hole in the longitudinal direction of the long hole, and a shaft supported by the first support portion so as to be movable together with the movable plate in the longitudinal direction of the long hole, and supported rotatably by the second support portion via the bearing, connecting the first support portion and the second support portion.

[0008] According to this configuration, even if the first support part and the second support part are displaced relative to each other when the structure vibrates due to an earthquake, strong wind, etc., the shaft connecting the two support parts moves in the long hole together with the movable plate relative to the first support part, so that the relative displacement of the first support part and the second support part in the longitudinal direction of the long hole is permitted. At this time, even if the relative rotation of the first support part and the second support part occurs due to the relative displacement of the first support part and the second support part, the shaft rotates smoothly via the bearing, so that the relative displacement including the rotation is permitted well. In addition, by configuring the movable plate to contact the inner surface of the long hole at a surface or multiple points, the load acting from the movable plate to the inner surface of the long hole can be dispersed to suppress the contact pressure, and the relative displacement of the first support part and the second support part can be permitted well. On the other hand, in the direction intersecting the longitudinal direction of the long hole, a sufficient support load can be received via the movable plate and the bearing.

[0009] It is also preferable that the bearing rotatably supports the shaft and swingably supports the shaft. According to this configuration, even when the relative swinging occurs due to the relative displacement of the first support part and the second support part, the shaft can swing via the bearing, so the relative displacement, including swinging, is well tolerated. Since the movement of the shaft in the longitudinal direction of the long hole and the rotation and swinging of the shaft by the bearing are performed separately, the former movement and the latter rotation and swing are less likely to affect each other. Therefore, the relative displacement of the first support part and the second support part can be tolerated even better.

[0010] It is also preferable that the longitudinal direction of the slot is oriented horizontally. According to this configuration, it is possible to satisfactorily tolerate the relative horizontal displacement of the first support part and the second support part even when the structure vibrates in the horizontal direction due to an earthquake, strong wind, etc. Note that the term "oriented in the horizontal direction" does not necessarily mean coinciding with the horizontal direction, but includes, for example, a range of about ±30 degrees with respect to the horizontal direction.

[0011] It is also preferable that the long hole has a first inner surface and a second inner surface which are parallel and opposed to each other, and the movable plate moves within the long hole while being inscribed in or in close proximity to the first inner surface and the second inner surface, respectively. According to this configuration, it is possible to restrict the movement of the movable plate in a direction intersecting with each inner surface of the long hole, and to realize smooth movement of the movable plate. By forming the long hole in a simple shape such as a rectangle, it is possible to easily process the long hole forming portion.

[0012] It is also preferable that the movable plate moves within the long hole while being in contact with at least one of the first inner surface and the second inner surface at a surface or a plurality of points. According to this configuration, the load transmitted from the movable plate to the inner surface of the long hole can be dispersed to suppress the contact pressure, and the relative displacement of the first support portion and the second support portion can be more satisfactorily tolerated.

[0013] It is also preferable that a lubricant be applied to the contact portion between the slot and the movable plate. According to this configuration, the resistance when the movable plate moves inside the long hole can be further reduced, and the relative displacement of the first support portion and the second support portion can be more satisfactorily tolerated.

[0014] It is also preferable that a restraining member is provided on at least one of the first support portion and the second support portion and slidably presses the other of the first support portion and the second support portion in the axial direction of the shaft, and the restraining member restrains the relative positions of the first support portion and the second support portion in the axial direction. According to this configuration, it is possible to adjust the positions of the first support portion and the second support portion and absorb construction errors while suppressing the effect on the movement of the shaft within the long hole.

[0015] It is also preferable that at least one of a pressed portion of at least one of the first support portion and the second support portion, which is pressed by the restraining member, and a pressing portion of the restraining member, is provided with a low friction portion. According to this configuration, it is possible to suppress the effect on the relative displacement of the first support portion and the second support portion while applying a pressing force to at least one of the first support portion and the second support portion by the restraining member.

[0016] The vibration control system according to the present invention is a vibration control system for a building having layers, comprising: a first member provided between layers of the building and having one of the first support part and the second support part; a second member connected to the first member and having the other of the first support part and the second support part; a brace member installed on the second member; a vibration control damper provided between a beam facing the second member and the brace member to damp horizontal vibrations; and any of the supports described above. The second member is a member that extends horizontally and connects to the structure, and both longitudinal ends of the second member are connected to the structure via the support in which the longitudinal direction of the long hole is oriented horizontally, and the longitudinal middle portion of the second member is connected to the structure via the support in which the longitudinal direction of the long hole is oriented vertically. With this configuration, even if horizontal vibrations occur in the structure, the vibrations can be damped by the vibration damper, and the reaction force of the vibration damper can be absorbed within the range of relative displacement between the first support part and the second support part, making it difficult for the reaction force to be transmitted to the first member between the layers of the structure. Effect of the Invention

[0017] According to the present invention, it is possible to provide a bearing and vibration control system that can increase the support force in a first direction (e.g., vertical support force) and reduce the resistance in a second direction (e.g., horizontal resistance) that intersects the first direction. [Brief description of the drawings]

[0018] [Figure 1] 1 is an explanatory diagram of a main part of a vibration control system according to an embodiment of the present invention attached to a frame between layers of a structure. [Diagram 2]FIG. 2 is an explanatory diagram showing a support of the vibration control system. [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. 5 is an enlarged view of a portion K in FIG. [Figure 6] 13 is an explanatory diagram showing the rotation in one direction caused by the support. FIG. [Figure 7] 13 is an explanatory diagram showing the rotation in another direction caused by the support. FIG. [Figure 8] FIG. 11 is an explanatory diagram showing the displacement of one side in the horizontal direction by the support. [Figure 9] 13 is an explanatory diagram showing the displacement of the other side in the horizontal direction by the support. FIG. [Figure 10] 11 is an explanatory diagram showing the rotation and horizontal displacement caused by the support. FIG. [Figure 11] FIG. 4 is a cross-sectional view corresponding to FIG. 3, showing the effect of adjusting the position of the support to one side in the horizontal direction by the restraining member. [Figure 12] FIG. 4 is a cross-sectional view corresponding to FIG. 3, showing the effect of adjusting the position of the support to the other side in the horizontal direction by the restraining member. [Figure 13] FIG. 3 is an explanatory diagram corresponding to FIG. 2, showing the action of an additional bending moment generated in the support. [Figure 14] FIG. 6 is an enlarged view corresponding to FIG. 5, showing a first modified example of the elongated hole of the support. [Figure 15] FIG. 6 is an enlarged view corresponding to FIG. 5, showing a second modified example of the elongated hole of the support. [Figure 16] FIG. 4 is a cross-sectional view corresponding to FIG. 3, showing a modified example of the restraining member. [Figure 17] FIG. 2 is an explanatory diagram corresponding to FIG. 1, showing a modified example of the vibration damping system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] <Vibration control device> Hereinafter, a vibration control device (vibration control system) 1 equipped with a bearing S according to an embodiment of the present invention will be described with reference to the accompanying drawings. The vibration damping device 1 shown in FIG. 1 is attached to, for example, an inter-story frame in the lower layer of a reinforced concrete structure BL. The vibration control device 1 may be installed on any floor (story) including the upper floor and not limited to the lower floor. The vibration control device 1 is disposed in a space 2 which is an opening between any two floors where the frame of the structure BL can be displaced relative to one another. The structure BL has many spaces 2 on the top, bottom, left and right sides, partitioned by, for example, left and right columns (first members) P1, P2 and top and bottom beams Q1, Q2 on one floor.

[0020] For example, in the space 2, a column-side support part (second support part) 5 is fixed by a fastening bolt (not shown) or the like to the inner surface 3 of each upper end part of the opposing columns P1, P2. The column-side support part 5 is formed, for example, of a pair of parallel plate members extending vertically. In addition, the surface (lower surface) of the upper beam Q1 in the space 2 facing the lower beam Q2 is defined as a first structural surface 6, and the upper surface (upper surface) of the lower beam Q2 is defined as a second structural surface 4.

[0021] A reinforcing member (second member) 7 made of steel material having a rectangular cross-sectional cylindrical shape is arranged on the first structural face 6 side of the upper beam Q1. An upper support part 8 having a generally U-shaped cross section is fixed to the longitudinal middle part (a range having a width not including the center, the same applies below) of the first structural face 6. The reinforcing member 7 has a widening part 7a, a part of which widens toward the first structural face 6 side, and this widening part 7a is inserted into the upper support part 8. The reinforcing member 7 is supported so as to be swingable about an upper pin 10 provided on the upper support part 8 at the position of the widening part 7a.

[0022] A reinforcing member side support part (first support part) 11 arranged inside the column side support part 5 is fixed to both ends of the reinforcing member 7. The reinforcing member side support part 11 is formed, for example, in the shape of a plate extending in the vertical direction. A reinforcing member side support part 11 is supported on each of the pillar side support parts 5 of the pillars P1, P2 via a bearing S so as to be swingable in the up-down and left-right directions and movable in the horizontal direction.

[0023] As described above, the vibration control device 1 for the layered structure BL includes the columns P1, P2 provided between the layers of the structure BL, the reinforcing member 7 connected to the columns P1, P2, and the V-shaped brace (brace member) 30 installed on the reinforcing member 7. The vibration control device 1 also includes the vibration damper 35 provided between the beam Q2 facing the reinforcing member 7 and the V-shaped brace 30 to damp horizontal vibrations, and the bearing S.

[0024] As shown in FIGS. 2 and 3, the column-side support portion 5 is composed of a pair of shaft support portions 13, and the reinforcing-member-side support portion 11 is disposed between the pair of shaft support portions 13. A connecting shaft (shaft) 14 passes through the pair of shaft support parts 13 and the reinforcing member side support part 11. The shaft support portion 13 comprises a column side support plate 16 extending vertically, a movable plate 17 movably arranged within a long hole 16a formed in the column side support plate 16, and a pair of movable plate slip-out prevention members 18 that prevent the movable plate 17 from slipping out of the long hole 16a of the column side support plate 16.

[0025] The column side support plate 16 has a long hole forming portion 16b in its approximate center, and a long hole 16a is formed in this long hole forming portion 16b. The peripheral portion of the long hole 16a includes the long hole forming portion 16b. The movable plate 17 has a shaft through hole 17a through which the connecting shaft 14 passes. The fit between the shaft through hole 17a and the connecting shaft 14 may be either a clearance fit or an interference fit. In addition, a retaining ring, a retaining pin, or the like that prevents the connecting shaft 14 from coming off the column side support portion 5 may be provided on both ends of the connecting shaft 14, for example, on the outer side of the pair of movable plates 17. The pair of movable-plate slip-out prevention members 18 are disposed on both sides of the column-side support plate 16 so as to cover both sides of the movable plate 17. The pair of movable-plate slip-out prevention members 18 are provided with shaft insertion holes 18a through which the connecting shafts 14 are inserted. The pair of movable-plate slip-out prevention members 18 are fixed to the column-side support plate 16 by fastening members or the like (not shown).

[0026] The reinforcing member side support part 11 includes a reinforcing member side support plate (pressed part) 21, and a spherical plain bearing (bearing) 22 provided approximately in the center of the reinforcing member side support plate 21 and fitted into a bearing fitting hole 21a. The spherical plain bearing 22 comprises an outer ring 23 fitted in a bearing fitting hole 21 a of the reinforcing member side support plate 21 , and an inner ring 24 fitted slidably inside the outer ring 23 .

[0027] The outer ring 23 has an outer peripheral surface 23a that fits into the bearing fitting hole 21a and an inner peripheral surface 23b that is a concave spherical surface. The inner ring 24 has an outer peripheral surface 24a that is a convex spherical surface and an inner peripheral surface 24b that fits around the connecting shaft 14. The inner peripheral surface 23b (concave spherical surface) of the outer ring 23 and the outer peripheral surface 24a (convex spherical surface) of the inner ring 24 are slidably fitted into each other. Therefore, the connecting shaft 14 and the reinforcing-member-side support plate 21 can swing relatively in the vertical and horizontal directions and can rotate relatively around the axis of the connecting shaft 14. The fit between the inner peripheral surface 24b of the inner ring 24 and the connecting shaft 14 may be either a clearance fit or an interference fit, but an interference fit is preferable.

[0028] The pair of shaft support parts 13 of the column side support part 5 are provided with a plurality of restraining members 26 that restrain the reinforcing member side support parts 11, respectively. The restraining member 26 comprises a bolt-shaped position adjustment member 27 that is screwed into the threaded hole 16g of the column side support plate 16, a restraining portion (pressing portion) 28 provided at the tip of the position adjustment member 27, and a lock nut 29 that fixes the position adjustment member 27 to the column side support plate 16.

[0029] The restraining portion 28 includes a restraining portion base 28a supported on the tip of the position adjustment member 27, and a sliding plate 28b attached to the restraining portion base 28a and slidably pressing against the reinforcing-member side support plate 21 of the reinforcing-member side support portion 11 to restrain it. A low-friction material such as fluororesin is suitable as the material for the sliding plate 28b. A low-friction material may also be provided on the surface of the reinforcing-member side support plate 21 pressed by the sliding plate 28b. That is, it is sufficient that at least one of the surfaces of the sliding plate 28b and the reinforcing-member side support plate 21 is provided with a low-friction material. The low-friction material may be a coating.

[0030] 3 and 4, the long hole 16a of the column side support plate 16 has a rectangular inner peripheral surface 16c, and the longitudinal direction of the long hole 16a is oriented horizontally. The inner peripheral surface 16c has an upper inner surface 16d, a lower inner surface 16e, and a pair of side inner surfaces 16f, and the upper inner surface 16d and the lower inner surface 16e are parallel to each other and extend both horizontally.

[0031] The movable plate 17 is formed in a roughly square shape when viewed from the side and has an upper surface 17d, a lower surface 17e, and a pair of side surfaces 17f, as well as a number of arcuate surfaces 17g extending and curving from both ends of the upper surface 17d and the lower surface 17e toward the side surfaces 17f. The upper surface 17d abuts against or is close to the upper inner surface 16d of the slot 16a, and the lower surface 17e abuts against the lower inner surface 16e of the slot 16a. A lubricant such as grease is applied between an upper inner surface 16d of the slot 16a and an upper surface 17d of the movable plate 17, and between a lower inner surface 16e of the slot 16a and a lower surface 17e of the movable plate 17.

[0032] The bearing S includes a spherical plain bearing 22 of the reinforcing member side support part 11, an elongated hole forming part 16b of the column side support part 5, a movable plate 17 movably arranged within the elongated hole 16a, and a connecting shaft 14 inserted into the spherical plain bearing 22 and supported by the movable plate 17. The bearing S may be considered to include the column side support part (first support part) 5 and the reinforcing member side support part (second support part) 11. The movable plate 17 is movable in the longitudinal direction of the elongated hole 16a along an upper inner surface 16d and a lower inner surface 16e of the elongated hole 16a.

[0033] 5, upper surface 17d of movable plate 17 can be in surface contact with upper inner surface 16d of long hole 16a, and lower surface 17e can be in surface contact with lower inner surface 16e of long hole 16a. Movable plate 17 can move in the longitudinal direction within long hole 16a with at least one of upper surface 17d and lower surface 17e in surface contact with the inner surface of long hole 16a. The load transmitted from the reinforcing member side support part 11 (see FIG. 4) to the movable plate 17 via the connecting shaft 14 is distributed and transmitted from the upper surface 17d of the movable plate 17 to the upper inner surface 16d of the long hole 16a, as shown by arrows A and B. The load is also distributed and transmitted from the lower surface 17e of the movable plate 17 to the lower inner surface 16e of the long hole 16a. The movable plate 17 described above functions as a support pressure distribution plate that distributes the load transmitted to the movable plate 17.

[0034] In this way, the upper surface 17d and the lower surface 17e of the movable plate 17 come into surface contact with the upper inner surface 16d and the lower inner surface 16e of the long hole 16a, respectively, so that the load is distributed and transmitted to the upper inner surface 16d and the lower inner surface 16e of the long hole 16a, and the surface pressure of each contact surface is kept low. This makes it possible to increase the vertical support force at the support S and reduce the resistance to the horizontal movement of the connecting shaft 14. In addition, the film thickness of the lubricant applied to each contact surface between the movable plate 17 and the long hole 16a is ensured, allowing the movable plate 17 to move smoothly in the horizontal direction relative to the long hole 16a, and reducing the horizontal resistance.

[0035] 1, a V-shaped brace 30 serving as a frame extending toward the second structural face 4 of the beam Q2 in the space 2 is connected to the underside of the reinforcing member 7. The V-shaped brace 30 includes a first vertical frame 31 and a second vertical frame 32 each extending diagonally downward from the reinforcing member 7, and is formed into a substantially V-shape by the first vertical frame 31 and the second vertical frame 32. The first vertical frame 31 is formed, for example, on a side longer than the second vertical frame 32.

[0036] Furthermore, the apex 30a of the lower end of the V-shaped brace 30 is located near the second structural face 4 of the beam Q2, and a lower support 34 fixed to the second structural face 4 of the beam Q2 is provided near the apex 30a. The lower support 34 is formed in a generally U-shape in cross section, and is fixed to the longitudinal middle part of the second structural face 4 of the beam Q2 with a fastening bolt or the like. A vibration damper 35 is connected to the lower support 34 and the apex 30a of the V-shaped brace 30. The vibration damper 35 is disposed above the longitudinal middle part of the second structural face 4.

[0037] The vibration damper 35 may be any damper, such as an oil damper, a friction damper, or a viscoelastic body (high damping rubber). The vibration damper 35 has, for example, one end of a cylinder 35a containing oil, a viscous body, or the like, fixed to a lower pin 36 provided on the lower support 34, and one end of a piston rod 35b that moves back and forth within the cylinder 35a to damp vibrations, fixed to the top 30a of the V-shaped brace 30. The vibration damper 35 is arranged horizontally between the top 30a of the V-shaped brace 30 and the lower pin 36 of the lower support 34, and the vibration damper 35 can damp horizontal vibrations occurring in the columns P1, P2 and the beams Q1, Q2.

[0038] The top 30a of the V-shaped brace 30 is swingable around the lower pin 36. When the columns P1 and P2 swing horizontally, the V-shaped brace 30 is swingable relative to the lower pin 36. The upper support 8 and the upper pin 10, and the lower support 34 and the lower pin 36 are preferably attached to the longitudinal center of the beams Q1 and Q2, for example, so that no reaction force is generated in a direction perpendicular to the longitudinal direction of the beams Q1 and Q2. In this embodiment, the lower pin 36, such as a fastening bolt, attached between both sides of the lower support 34 is slightly misaligned in the horizontal direction relative to the upper pin 10 of the upper support 8.

[0039] In the vibration control device 1 according to this embodiment, a reinforcing member 7 is attached to the upper portion between the columns P1, P2 and the beams Q1, Q2 that form the space 2 between the layers of the structure BL. The reinforcing member 7 forms a triangular frame shape by connecting a first vertical frame 31 and a second vertical frame 32 as the base of a V-shaped brace 30. Furthermore, the widened portion 7a of the reinforcing member 7 is supported by an upper pin 10 of an upper support portion 8, and a top portion 30a of the V-shaped brace 30 and a lower pin 36 of a lower support portion 34 are connected via a vibration control damper 35.

[0040] In this way, the upper pins 10 and lower pins 36 support the reinforcing members 7 and the V-shaped braces 30 via the vibration dampers 35, so the stress transmitted to the first structural face 6 and the second structural face 4 can be limited to the stress along the first structural face 6 and the second structural face 4 (the longitudinal axial force of beams Q1, Q2). Therefore, reinforcement work for beams Q1, Q2 on the upper and lower floors is not necessary, and reinforcement work for structure BL can be carried out only within space 2.

[0041] In addition, the reinforcing member-side supporting parts 11 at both ends of the reinforcing member 7 are connected and supported by the column-side supporting parts 5 of the columns P1, P2 via the connecting shafts 14 and the movable plates 17, which increases the vertical supporting force of the reinforcing member 7. Furthermore, the horizontal vibrations of the columns P1, P2 are received by the connecting shafts 14 and the movable plates 17, which reduces horizontal resistance, and structurally reduces the number of parts, making it possible to obtain a small, compact support S.

[0042] In the above-mentioned support S, the column side support portion 5 of the columns P1, P2 is composed of a pair of shaft support portions 13 (including the long hole 16a and the movable plate 17), and a single reinforcing member side support portion 11 (including the bearing 22) of the reinforcing member 7 is arranged between this pair of shaft support portions 13. However, the reinforcing member side support portion 11 may be configured conversely as a pair of shaft support portions (including the long hole 16a and the movable plate 17), and a single column side support portion 5 (including the bearing 22) may be arranged between this pair of shaft support portions. As another form of the support S, the column side support portion (first support portion) 5 of the columns (first members) P1, P2 may be configured as a pair of support portions (including bearings 22), and a single reinforcing member side support portion (second support portion) 11 (including the long hole 16a and the movable plate 17) of the reinforcing member (second member) 7 may be arranged between the pair of support portions. Furthermore, the reinforcing member side support part 11 may be configured to be composed of a pair of support parts (including bearings 22), and a single column side support part 5 (including the long hole 16a and the movable plate 17) may be disposed between the pair of support parts.

[0043] Next, a method for damping vibrations of the structure BL caused by earthquakes, strong winds, etc. will be described. In FIG. 1, when a supporting structure such as a foundation vibrates horizontally due to an earthquake, strong wind, or the like, a structure BL supported by the supporting structure responds by vibrating horizontally. When the structure BL vibrates and deforms due to an earthquake or the like, horizontal inter-story displacement occurs between the upper and lower stories of each space 2 of the frame. That is, due to the vibration of the structure BL, the columns P1, P2 and the beams Q1, Q2 that constitute the space 2 each move back and forth in the horizontal direction. At this time, the reinforcing member 7 swings about the upper pin 10 of the upper receiving portion 8 of the first structural face 6 of the upper beam Q1.

[0044] When the structure BL vibrates in the horizontal direction, one end of the reinforcing member 7 (the reinforcing member support part 11 on the right side in Fig. 1) rotates relatively in one direction (clockwise) around the connecting shaft 14 as indicated by arrow C in Fig. 6, and also rotates relatively in the other direction (counterclockwise) around the connecting shaft 14 as indicated by arrow D in Fig. 7. At this time, the other end of the reinforcing member 7 (the reinforcing member support part 11 on the left side in Fig. 1) also rotates relatively in one direction (clockwise) around the connecting shaft 14, and also rotates relatively in the other direction (counterclockwise) around the connecting shaft 14. In this way, the connecting shafts 14 arranged on both sides of the reinforcing member 7 allow both ends of the reinforcing member 7 to rotate smoothly relative to the pillars P1, P2, and frictional resistance when the reinforcing member 7 swings is extremely small.

[0045] In addition, when the structure BL vibrates and deforms due to an earthquake or the like, and one end of the reinforcing member 7 (the reinforcing member support part 11 on the right side in FIG. 1) is displaced horizontally to the right as indicated by the arrow E in FIG. 8, the reinforcing member support part 11 on the right side approaches the column P2. In addition, the movable plate 17 connected to the reinforcing member support part 11 on the right side via the connecting shaft 14 moves horizontally to the right inside the long hole 16a of the column side support part 5 of the column P2. Furthermore, the other end of the reinforcing member 7 (the reinforcing member support part 11 on the left side in FIG. 1) is also displaced horizontally to the right, and the reinforcing member support part 11 on the left side moves away from the column P1. In addition, the movable plate 17 connected to the reinforcing member support part 11 on the left side via the connecting shaft 14 moves horizontally to the right inside the long hole 16a of the column side support part 5 of the column P1.

[0046] Furthermore, when one end of the reinforcing member 7 (the reinforcing member support part 11 on the right side in FIG. 1) is displaced horizontally to the left as indicated by the arrow F in FIG. 9 due to vibration of the structure BL, the reinforcing member support part 11 on the right side moves away from the column P2. The movable plate 17 connected to the reinforcing member support part 11 on the right side via the connecting shaft 14 moves horizontally to the left inside the long hole 16a of the column support part 5 of the column P2. Furthermore, the other end of the reinforcing member 7 (the reinforcing member support part 11 on the left side in FIG. 1) also moves horizontally to the left, and the reinforcing member support part 11 on the left side approaches the column P1. The movable plate 17 connected to the reinforcing member support part 11 on the left side via the connecting shaft 14 moves horizontally to the left inside the long hole 16a of the column support part 5 of the column P1. In this way, the movable plates 17 of the column side support parts 5 of the columns P1, P2 allow smooth horizontal displacement of both ends of the reinforcing member 7 relative to the columns P1, P2, and frictional resistance during horizontal movement of the reinforcing member 7 is extremely small.

[0047] The support S can simultaneously allow the above-mentioned rotation and horizontal displacement. As shown in Fig. 10, one end of the reinforcing member 7 (the reinforcing member support part 11 on the right side in Fig. 1) rotates relatively in the other direction (counterclockwise) around the connecting shaft 14 as indicated by arrow G in the figure, and is displaced horizontally to the left as indicated by arrow H. As a result, the reinforcing member support part 11 on the right side moves away from the pillar P2. In addition, the movable plate 17 connected to the reinforcing member support part 11 on the right side via the connecting shaft 14 moves horizontally to the left inside the long hole 16a of the pillar support part 5.

[0048] Furthermore, the other end of the reinforcing member 7 (the left reinforcing member support part 11 in FIG. 1) also rotates relatively in the other direction (counterclockwise) around the connecting shaft 14 and displaces horizontally to the left. As a result, the left reinforcing member support part 11 approaches the pillar P1. In addition, the movable plate 17 connected to the left reinforcing member support part 11 via the connecting shaft 14 moves horizontally to the left inside the long hole 16a of the pillar support part 5.

[0049] In this way, the connecting shafts 14 arranged on both sides of the reinforcing member 7 allow both ends of the reinforcing member 7 to rotate smoothly relative to the pillars P1, P2 and to displace horizontally at the same time, making the frictional resistance when the reinforcing member 7 sways extremely small. In addition, in Figure 10, the rotation and displacement of one end of the reinforcing member 7 in one direction has been explained as an example, but the same effect can be obtained by rotating and displacing one end of the reinforcing member 7 in the opposite direction to the one direction.

[0050] 6 to 10, the sliding plates 28b (see FIG. 3) of the multiple restraining members 26 slide relatively on both sides of the reinforcing member side support plate 21 of the reinforcing member side support portion 11 with a small frictional force, while pressing the reinforcing member side support plate 21 in the axial direction of the connecting shaft 14 (thickness direction of the reinforcing member side support plate 21). The vibration damper 35 strokes due to the reinforcing member 7 that displaces while swinging in the horizontal direction. Specifically, in the state shown in FIG. 6 and FIG. 9, the piston rod 35b of the vibration damper 35 is pushed into the cylinder 35a, and in the state shown in FIG. 7 and FIG. 8, the piston rod 35b is pulled out from the cylinder 35a. At this time, the reaction force (damping force) of the vibration damper 35 acts, and the vibration of the structure BL is suppressed.

[0051] Next, a method of adjusting the position of the structure BL and the reinforcing member 7 in the direction perpendicular to the reinforcing member support plate 21 of the reinforcing member support portion 11 will be described with reference to Figures 3, 11 and 12. 3, the reinforcing-member-side supporting plate 21 of the reinforcing-member-side supporting part 11 is pressed from both sides by position adjustment members 27 of a plurality of restraining members 26 so as to be position-adjustable. Therefore, even if there are dimensional errors or construction errors of the column-side supporting part 5 and the reinforcing-member-side supporting part 11, these can be absorbed by adjusting the amount of screwing of the position adjustment members 27 into the screw holes 16g of the column-side supporting part 5.

[0052] For example, as shown in Figures 11 and 12, when the reinforcing-member-side support plate 21 of the reinforcing member 7 has a horizontal relative error from the specified installation position (position indicated by the two-dot chain line) with respect to the columns P1, P2, the position of the restraining portion 28 is adjusted by the position adjustment member 27 of each restraining member 26 in the direction indicated by the arrow H1 in Figure 11 or the arrow H2 in Figure 12, and the front and back surfaces of the reinforcing-member-side support plate 21 are pressed at the actual installation position of the reinforcing-member-side support plate 21. After adjustment by the position adjustment member 27, the lock nut 29 is tightened to fix the position adjustment member 27. This adjustment makes it possible to prevent tilting, bending, etc. from occurring at the fixing position of the reinforcing member side support plate 21.

[0053] As shown in Figure 13, if the load due to the weight of the structure BL or external disturbances such as earthquakes is N, the load acting from the column side support part 5 to the connecting shaft 14 is N1, and the load acting in the opposite direction from the reinforcing member side support part 11 to the connecting shaft 14 is N2, and N1 = N2 = N. Furthermore, the distance from the load application point (connecting shaft 14) of the column-side support part 5 to the columns P1, P2 (see Figure 1 for column P1) is defined as L1, and the distance from the load application point (connecting shaft 14) of the reinforcing member-side support part 11 to the reinforcing member 7 is defined as L2. The additional bending moment M1 generated around the connecting shaft 14 in the columns P1, P2 and the additional bending moment M2 generated around the connecting shaft 14 in the reinforcing member 7 are as follows. M1 = N1 × L1 M2 = N2 × L2 That is, by setting the distances L1, L2 short for the predetermined loads N1, N2, the additional bending moments M1, M2 can be reduced.

[0054] <Modification of the long hole> As shown in Fig. 14, the column side support plate 16A of the column side support part (first support part) 5A has a long hole forming part 16b in its approximate center, and a long hole 46a is formed in this long hole forming part 16b. The column side support part 5A differs from the above-mentioned column side support part 5 (see Fig. 3) only in the shape of the long hole 46a of the column side support plate 16A. The support SA includes a spherical plain bearing 22 (see Figure 3) of the reinforcing member side support part 11 (see Figure 3), a long hole forming part 16b of the column side support part 5A, a movable plate 17 movably arranged within the long hole 46a, and a connecting shaft 14.

[0055] The long hole 46a has an inner peripheral surface 46c that is generally rectangular in front view, and the longitudinal direction of the long hole 46a is oriented in the horizontal direction. The inner peripheral surface 46c has an upper inner surface 46d, a lower inner surface 46e, and a pair of side inner surfaces 46f, as well as a plurality of arc-shaped inner surfaces 46g that extend in a curved manner from both ends of the upper inner surface 46d and the lower inner surface 46e toward the side inner surface 46f. The upper inner surface 46d and the lower inner surface 46e are parallel to each other and both extend in the horizontal direction. As described above, by providing the arc-shaped inner surfaces 46g at the four corners of the long hole 46a, stress concentration on the inner circumferential surface 46c can be suppressed.

[0056] In the movable plate 17, an upper surface 17d abuts against or is close to an upper inner surface 46d of the elongated hole 46a, and a lower surface 17e abuts against a lower inner surface 46e of the elongated hole 46a. The movable plate 17 is movable within the elongated hole 46a in the longitudinal direction of the elongated hole 46a, that is, in the horizontal direction, along an upper inner surface 46d and a lower inner surface 46e of the elongated hole 46a.

[0057] As shown in Fig. 15, the column side support plate 16B of the column side support part (first support part) 5B has a long hole forming part 16b in its approximate center, and a long hole 56a is formed in this long hole forming part 16b. The column side support part 5B differs from the above-mentioned column side support part 5 (see Fig. 3) only in the shape of the long hole 56a of the column side support plate 16B. The support SA includes a spherical plain bearing 22 (see Figure 3) of the reinforcing member side support part 11 (see Figure 3), a long hole forming part 16b of the column side support part 5B, a movable plate 17 movably arranged within the long hole 56a, and a connecting shaft 14.

[0058] The long hole 56a has an inner peripheral surface 56c that is elliptical when viewed from the front, and the longitudinal direction of the long hole 56a is oriented horizontally. The inner peripheral surface 56c has an upper inner surface 56d, a lower inner surface 56e, and a pair of arcuate inner side surfaces 56f. The upper inner surface 56d and the lower inner surface 56e are parallel to each other and both extend horizontally. As described above, by forming the inner peripheral surface 56c of the elongated hole 56a in an elliptical shape, it is possible to suppress stress concentration on the inner peripheral surface 56c, and the elongated hole 56a can be easily formed by a cutting tool or the like.

[0059] In the movable plate 17, the upper surface 17d abuts against or is close to the upper inner surface 56d of the elongated hole 56a, and the lower surface 17e abuts against the lower inner surface 56e of the elongated hole 56a. The upper surface 17d of the movable plate 17 and the upper inner surface 56d of the slot 56a are formed, for example, as a smooth plane, but are not limited thereto. For example, at least one of the upper surface 17d and the upper inner surface 56d may be provided with a recess such as a groove or a depression for retaining a lubricant. This allows the lubricant to be retained for a long period of time, and the movable plate 17 can maintain good lubrication. Similarly, the upper surface 17d of the movable plate 17 may be provided with recesses such as grooves or depressions for retaining a lubricant, or may be provided with a plurality of protrusions for achieving a plurality of point contacts.

[0060] The movable plate 17 is movable within the elongated hole 56a in the longitudinal direction of the elongated hole 56a, that is, in the horizontal direction, along an upper inner surface 56d and a lower inner surface 56e of the elongated hole 56a. The lower surface 17e of the movable plate 17 and the lower inner surface 56e of the slot 56a are formed, for example, as a smooth plane, but are not limited thereto. For example, at least one of the lower surface 17e and the lower inner surface 56e may be provided with a recess such as a groove or a depression for retaining a lubricant. This allows the lubricant to be retained for a long period of time, and the movable plate 17 can maintain good lubrication. Similarly, the lower surface 17e of the movable plate 17 may be provided with recesses such as grooves or depressions for retaining a lubricant, or may be provided with a plurality of protrusions for achieving a plurality of point contacts.

[0061] <Modifications of Restraint Member> As shown in Fig. 16, the reinforcing member side support part (second support part) 11C includes a reinforcing member side support plate 21C, a spherical plain bearing 22 provided in the approximate center of the reinforcing member side support plate 21C and fitted into the bearing fitting hole 21a, and a restraining member 61 that restrains a pair of shaft support parts 13C of the column side support part (first support part) 5C. The reinforcing member side support part 11C is particularly different from the reinforcing member side support part 11 in that the restraining member 61 is added. Also, the reinforcing member side support plate 21C is additionally provided with a pair of bolt fixing holes 21e through which the through bolts 62 of the restraining member 61 pass and are fixed. Specifically, the restraining member 61 presses and restrains a column side support plate (pressed portion) 16C provided on the shaft support portion 13C. Note that the shaft support portion 13C does not have a pair of screw holes 16g with respect to the shaft support portion 13.

[0062] The restraining member 61 comprises a through bolt 62 that penetrates the reinforcing member side support plate 21C and is fixed to this reinforcing member side support plate 21C, a pair of position adjustment members 63 screwed to both end sides of the through bolt 62, a restraining portion (pressing portion) 64 provided on each position adjustment member 63, and a lock nut 65 that fixes the position adjustment member 63 to the through bolt 62.

[0063] The through bolt 62 has a pair of threaded portions 62a protruding from both sides of the reinforcing member side support plate 21C. The position adjustment member 63 is formed in a nut shape and is screwed to each of the pair of threaded portions 62a of the through bolt 62. The restraining portion 64 has a restraining portion base 64a supported on the outer periphery of the position adjustment member 63, and a sliding plate 64b attached to the restraining portion base 64a and slidably pressing the column side support plate 16C of the column side support portion 5C.

[0064] A low-friction material such as fluororesin is suitable as the material of the sliding plate 64b. A low-friction material may also be provided on the surface of the column side support plate 16C that is pressed against the sliding plate 64b. That is, it is sufficient that a low-friction material is provided on at least one of the surfaces of the sliding plate 64b and the column side support plate 16C. The low-friction material may be a coating.

[0065] As described above, the support S in the above embodiment comprises: a long hole forming portion 16b provided in a first support portion (e.g., the column side support portion 5) of one of the structure BL and the reinforcing member 7 (e.g., the structure BL); a spherical plain bearing 22 provided in a second support portion (e.g., the reinforcing member side support portion 11) of the other of the structure BL and the reinforcing member 7 (e.g., the reinforcing member 7); a movable plate 17 inserted into the long hole 16a formed by the long hole forming portion 16b and movable within the long hole 16a in the longitudinal direction of the long hole 16a; and a connecting shaft 14 supported so as to be movable together with the movable plate 17 relative to the column side support portion 5 and rotatably supported via the spherical plain bearing 22 relative to the reinforcing member side support portion 11, connecting the column side support portion 5 and the reinforcing member side support portion 11.

[0066] According to this configuration, even if the reinforcing member side support part 11 and the column side support part 5 are displaced relative to each other when the structure BL vibrates due to an earthquake, strong wind, or the like, the connecting shaft 14 connecting the two support parts moves in the long hole 16a together with the movable plate 17 relative to the column side support part 5, so that the relative displacement of the reinforcing member side support part 11 and the column side support part 5 in the longitudinal direction of the long hole 16a is permitted. At this time, even if the relative rotation of the reinforcing member side support part 11 and the column side support part 5 occurs due to the relative displacement of the reinforcing member side support part 11 and the column side support part 5, the connecting shaft 14 rotates smoothly via the spherical plain bearing 22, so that the relative displacement including the rotation is well permitted. In addition, by configuring the movable plate 17 to contact the inner surface of the long hole 16a at a surface or multiple points, the load acting on the inner surface of the long hole 16a from the movable plate 17 is dispersed to suppress the contact pressure, and the relative displacement of the reinforcing member side support part 11 and the column side support part 5 can be well permitted. On the other hand, in the direction intersecting the longitudinal direction of the long hole 16a, a sufficient support load can be received via the movable plate 17 and the spherical plain bearing 22.

[0067] In addition, in the above-mentioned support S, the spherical plain bearing 22 supports the connecting shaft 14 rotatably and also swingably, so that even when the relative swing occurs due to the relative displacement of the column-side support part 5 and the reinforcing-member-side support part 11, the connecting shaft 14 can swing via the spherical plain bearing 22, so that the relative displacement including the swing is well tolerated. The movement of the connecting shaft 14 in the longitudinal direction of the long hole 16a and the rotation and swing of the connecting shaft 14 by the spherical plain bearing 22 are performed separately, so that the former movement and the latter rotation and swing are less likely to affect each other. Therefore, the relative displacement of the column-side support part 5 and the reinforcing-member-side support part 11 can be tolerated even better.

[0068] Furthermore, in the above-mentioned support S, the longitudinal direction of the long hole 16a is oriented horizontally, so that even when the structure BL vibrates horizontally due to an earthquake, strong winds, etc., the horizontal relative displacement of the column side support portion 5 and the reinforcing member side support portion 11 can be well tolerated.

[0069] In the above-mentioned support S, the long hole 16a has upper and lower inner surfaces 16d and 16e which face each other in parallel, and the movable plate 17 moves within the long hole 16a while being inscribed in or in close proximity to the upper and lower inner surfaces 16d and 16e, respectively, thereby restricting the movement of the movable plate 17 in a direction intersecting with each inner surface of the long hole 16a and realizing smooth movement of the movable plate 17. By forming the long hole 16a into a simple shape such as a rectangle, it is possible to easily process the long hole forming portion 16b.

[0070] Furthermore, in the above-mentioned support S, the movable plate 17 moves within the long hole 16a while in contact with at least one of the upper inner surface 16d and the lower inner surface 16e by a surface or multiple points, thereby dispersing the load transmitted from the movable plate 17 to the inner surface of the long hole 16a, suppressing the contact pressure, and better tolerating the relative displacement of the column side support part 5 and the reinforcing member side support part 11.

[0071] In addition, in the above-mentioned support S, a lubricant is applied to the contact portion between the long hole 16a and the movable plate 17, thereby further reducing the resistance when the movable plate 17 moves within the long hole 16a, and the relative displacement of the column side support portion 5 and the reinforcing member side support portion 11 can be better tolerated.

[0072] In addition, the above-mentioned support S is provided with a restraining member 26 which is provided on at least one of the reinforcing member side support part 11 and the column side support part 5 and slidably presses the other of the reinforcing member side support part 11 and the column side support part 5 in the axial direction of the connecting shaft 14.The restraining member 26 restrains the relative axial positions of the reinforcing member side support part 11 and the column side support part 5.Therefore, by providing the restraining member 26, it is possible to adjust the position of the reinforcing member side support part 11 and the column side support part 5 and absorb construction errors while suppressing the effect on the movement of the connecting shaft 14 within the long hole 16a.

[0073] Furthermore, in the above-mentioned support S, at least one of the reinforcing member side support plate 21, which is pressed by the restraining member 26 in at least one of the reinforcing member side support part 11 and the column side support part 5, and the restraining part 28 of the restraining member 26, is provided with a low-friction part. Therefore, while the restraining member 26 applies a pressing force to at least one of the reinforcing member side support part 11 and the column side support part 5, the effect on the relative displacement of the reinforcing member side support part 11 and the column side support part 5 can be suppressed.

[0074] The vibration control system 1 in the above embodiment is a vibration control system for a layered structure BL, and includes columns P1, P2 provided between layers of the structure BL and provided with a column side support portion 5 which is one of the first support portion and the second support portion, a reinforcing member 7 connected to the columns P1, P2 and provided with a reinforcing member side support portion 11 which is the other of the first support portion and the second support portion, a V-shaped brace 30 installed on the reinforcing member 7, a vibration control damper 35 provided between the beam Q2 facing the reinforcing member 7 and the V-shaped brace 30 to damp horizontal vibrations, and a support S as described above.

[0075] According to this configuration, even if horizontal vibrations occur in the structure BL, the vibrations can be damped by the vibration damper 35, and the reaction force of the vibration damper 35 can be absorbed within the range of relative displacement between the reinforcing member side support part 11 and the column side support part 5, making it difficult for the reaction force to be transmitted to the columns P1, P2 between the layers of the structure BL.

[0076] Here, a modified example of the vibration control system 1 of the above embodiment will be described with reference to Fig. 17. The same components as those of the above embodiment will be given the same reference numerals and detailed description will be omitted. Similar to the vibration control system 1, the vibration control system 101 of the modified example is disposed in the space 2 between two stories of the structure BL. A reinforcing member (second member) 7 is disposed on the first structural face 6 side of the upper beam (first member) Q1. A beam-side supporting portion (first supporting portion) 105 is fixed to the longitudinal middle portion of the first structural face 6. The beam-side supporting portion 105 is formed, for example, of a pair of plate members parallel to each other.

[0077] A reinforcing member upper support portion (second support portion) 111 arranged inside the beam side support portion 105 is fixed to the reinforcing member 7. The reinforcing member upper support portion 111 is formed, for example, in a plate shape parallel to each plate material of the beam side support portion 105. The reinforcing member upper support part 111, and therefore the reinforcing member 7, are supported by the beam side support part 105, and therefore the upper beam Q1, via a bearing S'. The bearing S' is formed by rotating the bearing S shown in Fig. 2 by 90 degrees around the connecting shaft 14. The bearing S' supports the reinforcing member upper support part 111 relative to the beam side support part 105 so that it can swing up and down and left and right, and also supports it so that it can move in the vertical direction.

[0078] 2 and 3, the beam-side support part 105 is composed of a pair of shaft support parts 13, similar to the column-side support part 5, and a reinforcing member upper support part 111 is disposed between the pair of shaft support parts 13. A connecting shaft 114 similar to the connecting shaft 14 penetrates the pair of shaft support parts 13 and the reinforcing member upper support part 111, and the pair of shaft support parts 13 and the reinforcing member upper support part 111 are connected to each other via the connecting shaft 114. The shaft support part 13 of the beam-side support part 105 has a long hole 16a whose longitudinal direction is oriented in the vertical direction in a support plate similar to the column-side support plate 16, and a movable plate 17 is movably disposed in the long hole 16a. The long hole 16a of the beam-side support part 105 has side inner surfaces extending in the vertical direction parallel to each other, and the movable plate 17 is vertically movable along the pair of side inner surfaces. It should be noted that the term "oriented in the vertical direction" does not necessarily mean coinciding with the vertical direction, but includes, for example, a range of about ±30 degrees with respect to the vertical direction.

[0079] The reinforcing member upper support part 111 has a spherical plain bearing (bearing) 22 fitted to a support plate similar to the reinforcing member side support plate 21. A connecting shaft 114 is fitted to the inner ring of the spherical plain bearing 22. The connecting shaft 114 and the support plate of the reinforcing member upper support part 111 can swing relatively in the vertical and horizontal directions, and can rotate relatively around the axis of the connecting shaft 114. The pair of shaft support parts 13 of the beam side support part 105 are provided with a plurality of restraining members 26 that restrain the support plates of the reinforcing member upper support parts 111, respectively.

[0080] In the vibration damping device 101 according to this embodiment, when the structure BL vibrates and deforms due to an earthquake or the like, the columns P1, P2 and the beams Q1, Q2 that constitute the space 2 each perform a reciprocating motion in the horizontal direction. At this time, the reinforcing member 7 swings around the connecting shaft 114 of the support S' of the first structural face 6 of the upper beam Q1. At both ends of the reinforcing member 7, it rotates around the connecting shaft 114 of the support S, and the movable plate 17 connected via the connecting shaft 114 moves horizontally within the long hole 16a. As a result, at the supports S at both ends of the reinforcing member 7, it is possible to simultaneously allow the above-mentioned rotation and horizontal displacement while ensuring the vertical supporting force of the reinforcing member 7.

[0081] Furthermore, in the modified example, in the support S' supporting the longitudinal middle part of the reinforcing member 7 from above, the movable plate 17 moves vertically in the long hole 16a whose longitudinal direction faces the vertical direction. As a result, even if the structure BL vibrates in the horizontal direction and the interval between the reinforcing member 7 and the beam Q1 changes, the vertical movement of the reinforcing member 7 relative to the beam Q1 can be permitted. Also, not only in the case of the horizontal vibration of the structure BL, but also in the case of the interval between the reinforcing member 7 and the beam Q1 changing due to the change in the live load acting on the beam Q1, the vertical movement of the beam Q1 relative to the reinforcing member 7 can be permitted. As a result, in the support S' at the upper part of the reinforcing member 7, the horizontal supporting force of the reinforcing member 7 can be secured while simultaneously permitting the above-mentioned rocking and vertical displacement.

[0082] In the above modified example, the longitudinal middle part of the reinforcing member 7 is supported from above by the support S', the V-shaped brace 30 is installed below the reinforcing member 7, and the vibration damper 35 is provided between the lower beam Q2 facing the reinforcing member 7 and the V-shaped brace 30, but the configuration is not limited to this, and a configuration in which the configuration in Fig. 17 is inverted upside down may also be used. In other words, a configuration in which the longitudinal middle part of the reinforcing member 7 is supported from below by the support S', the V-shaped brace 30 is installed above the reinforcing member 7, and the vibration damper 35 is provided between the upper beam Q1 facing the reinforcing member 7 and the V-shaped brace 30 may also be used.

[0083] In the above-mentioned support S', the beam side support portion (first support portion) 105 of the beam (first member) Q1 is composed of a pair of shaft support portions 13 (including the long hole 16a and the movable plate 17), and a single reinforcing member upper support portion (second support portion) 111 (including the bearing 22) of the reinforcing member (second member) 7 is arranged between this pair of shaft support portions 13. However, conversely, the reinforcing member upper support portion 111 may be composed of a pair of shaft support portions (including the long hole 16a and the movable plate 17), and a single beam side support portion 105 (including the bearing 22) may be arranged between this pair of shaft support portions. As another form of the support S', the beam side support portion (first support portion) 105 of the beam (first member) Q1 may be composed of a pair of support portions (including bearings 22), and a single reinforcing member upper support portion (second support portion) 111 (including the long hole 16a and the movable plate 17) of the reinforcing member (second member) 7 may be arranged between the pair of support portions. Furthermore, the reinforcing member upper support portion 111 may be configured to be composed of a pair of support portions (including bearings 22), and a single beam side support portion 105 (including the long hole 16a and the movable plate 17) may be disposed between the pair of support portions.

[0084] The present invention is not limited to the above embodiment. For example, the bearing is not limited to a spherical plain bearing, but may be another type of bearing that is rotatable around the axis of the shaft and capable of swinging up and down and left and right. The present invention is not limited to the bearing S and vibration damping device 1 according to the above-described embodiment, and appropriate modifications and substitutions are possible without departing from the spirit of the present invention, and all of these are included in the present invention.

[0085] Instead of the V-shaped brace 30 connected between the reinforcing member 7 and the vibration damper 35, a brace having a substantially rectangular frame shape or the like may be connected. The vibration damping device 1 and the bearings S can be installed at any location on the structure BL, and the number of installations can be selected appropriately. In the above-mentioned embodiment, the bearings S and the vibration damping device 1 mounted on the structure BL are described, but the present invention is not limited to the structure BL, and can be applied to structures including various facilities and equipment other than the structure BL. [Explanation of symbols]

[0086] 1,101 Vibration control device (vibration control system) 5,5A,5B,5C Pillar side support part (second or first support part) 7 Reinforcing member (second member) 11, 11C Reinforcing member side support portion (first or second support portion) 14,114 Connecting shaft (shaft) 16C Pillar side support plate (pressure receiving part) 16a,46a,56a long hole 16b Long hole forming part 16d, 46d, 56d Upper inner surface 16e, 46e, 56e Lower inner surface 17 Movable plate 17d Top 17e Bottom 21 Reinforcing member side support plate (pressed portion) 22 Spherical plain bearing (bearing) 26,61 Restraining member 28,64 Restraint section (pressure section) 30 V-shaped brace (brace member) 35 Vibration damper 105 Beam side support part (second or first support part) 111 Reinforcement member upper support portion (first or second support portion) BL structure P1, P2 Column (first member) Q1,Q2 Beam (first member) S,SA,S' bearing

Claims

1. A long hole forming portion provided in a first support portion of one of a structure and a member connected to the structure; a bearing provided in a second support portion on the other of the structure and the member; a movable plate that is inserted into a long hole formed by the long hole forming portion and is movable within the long hole in a longitudinal direction of the long hole; a shaft supported by the first support portion so as to be movable together with the movable plate in the longitudinal direction of the long hole and supported by the second support portion so as to be rotatable via the bearing, the shaft connecting the first support portion and the second support portion; Equipped with A bearing characterized in that a lubricant is applied to a contact portion between the long hole and the movable plate.

2. A long hole forming portion provided in a first support portion of one of a structure and a member connected to the structure; a bearing provided in a second support portion on the other of the structure and the member; a movable plate that is inserted into a long hole formed by the long hole forming portion and is movable within the long hole in a longitudinal direction of the long hole; a shaft supported by the first support portion so as to be movable together with the movable plate in the longitudinal direction of the long hole and supported by the second support portion so as to be rotatable via the bearing, the shaft connecting the first support portion and the second support portion; a restraining member provided on at least one of the first support portion and the second support portion and configured to slidably press the other of the first support portion and the second support portion in an axial direction of the shaft; A support characterized in that the restraining member restrains the relative positions of the first support portion and the second support portion in the axial direction.

3. The support according to claim 2, characterized in that at least one of the pressed portion pressed by the restraining member in at least one of the first support portion and the second support portion and the pressing portion of the restraining member is provided with a low friction portion.

4. A vibration control system for a multi-storey building, comprising: a slot forming portion provided in a first support portion of one of the structure and a member connected to the structure; a bearing provided in a second support portion on the other of the structure and the member; a movable plate that is inserted into a long hole formed by the long hole forming portion and is movable within the long hole in a longitudinal direction of the long hole; a shaft supported by the first support portion so as to be movable together with the movable plate in the longitudinal direction of the long hole and supported by the second support portion so as to be rotatable via the bearing, the shaft connecting the first support portion and the second support portion; A bearing comprising: A first member provided between layers of the building and provided with one of the first support portion and the second support portion; a second member connected to the first member and provided with the other of the first support portion and the second support portion; A brace member installed on the second member; A vibration damper provided between a beam facing the second member and the brace member to attenuate horizontal vibrations; Equipped with The second member is a reinforcing member extending horizontally and connected to the structure, Both ends of the reinforcing member in the longitudinal direction are connected to the structure via the support in which the longitudinal direction of the long hole is oriented horizontally, A vibration control system, characterized in that the longitudinal intermediate portion of the reinforcing member is connected to the structure via the support, the longitudinal direction of the long hole of which is oriented vertically.

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