Damping system, bearing and damping method

Abstract

To provide a vibration control system, a bearing and a vibration control method capable of reducing additional bending moment increased in proportion to a distance from a load action point, having a compact structure, and superior in workability.SOLUTION: The vibration control system includes a vibration damper for damping horizontal vibrations of the building. A vibration damping system includes a sway mechanism unit including sliding plates provided on front and back surfaces of a slidably supported intermediary member, and restraint plates of a first restraint member and a second restraint member that slidably press the sliding plates, respectively, and damps a reaction force of a vibration damper transmitted to a column of a structure via the intermediary member by relative sliding between the sliding plates and the restraint plates during vibration of the building.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to, for example, a vibration damping system, a bearing and a vibration damping method. [Background technology]

[0002] Generally, the bearings that support structures such as buildings and bridges include pin bearings that use ball seats, laminated rubber bearings that have low horizontal resistance, and sliding and rolling bearings that have extremely low (almost zero) horizontal resistance. These bearings are used according to their purpose and application.

[0003] For example, in the vibration control device described in Patent Document 1, a connecting material is bridged between vibration control structures installed on a pair of opposing columns that form a space between floors of a building. These vibration control structures are bonded to each other by sandwiching a vibration control material between a mounting member attached to the side of the column and a mounting member attached to the connecting material, with the mounting members being attached to the side of the column. This vibration-damping material is made of a viscoelastic material so that the connecting 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 torsional deformation associated with the relative rotation can absorb the vibration energy of the building.

[0004] In the vibration control device described in Patent Document 1, the vibration control material is a viscoelastic body, which causes relative rotation and torsional deformation. In this case, the vibration control material is bonded to the column-side mounting member and the connecting material-side mounting member, which results in high horizontal resistance. Generally, when horizontal resistance needs to be minimized, sliding or rolling bearings have been used. In a vibration control system using the vibration control device described above, excessive stress may be applied to the pillars of the building due to the energy generated during vibration control. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-64024 Summary of the Invention [Problem to be solved by the invention]

[0006] However, sliding bearings have the problem that when a large compressive force is applied, the area of ​​the sliding plate becomes large and there is no resistance to the separation (pulling) of the sliding plate.

[0007] The present invention has been made in consideration of such problems, and aims to provide a vibration control system, a support, and a vibration control method that reduce the stress applied to building columns during vibration control. [Means for solving the problem]

[0008] (1) A first aspect of the present invention provides a vibration control system that includes a vibration damper that damps horizontal vibrations of a building. The vibration control system includes a sway mechanism that includes sliding plates provided on the front and back surfaces of a slidably supported intermediate member, and constraint plates of a first constraint member and a second constraint member that slidably press against the sliding plates. When the building vibrates, the sliding plate and the constraint plates slide relative to each other, thereby attenuating the reaction force of the vibration damper that is transmitted to the building's columns via the intermediate member. (2) In the above vibration control system, the restraint plate includes a first support portion restraint plate supported by a first support portion supported by the column, and the sway mechanism portion attenuates the reaction force of the vibration control damper transmitted via the intermediate member and the first support portion. (3) In the vibration damping system described above, the first support portion slidably supports the intermediate member via a first shaft provided in the first support portion. (4) The vibration control system includes a reinforcing member disposed parallel to the beams and floors of the building. The restraining plate includes a second support portion restraining plate supported by a second support portion supported by the reinforcing member. The sway mechanism attenuates the reaction force of the vibration control damper transmitted via the intermediate member and the second support portion. (5) In the vibration damping system described above, the second support portion slidably supports the intermediate member via a second shaft provided in the second support portion. (6) In the above vibration control system, the first support portion supports the first shaft by a first bearing having a first inner surface that is approximately spherical, and the second support portion supports the second shaft by a second bearing having a second inner surface that is approximately spherical. (7) In the above vibration control system, the first support member has a first inclined portion formed at a first end in a first direction among the vertical directions, and the second support member has a second inclined portion formed at a second end in a second direction among the vertical directions, and the first inclined portion and the second inclined portion are arranged opposite each other. When the first inclined portion and the second inclined portion are not vibrating, the first inclined portion and the second inclined portion are arranged with a gap between them, and the gap becomes the range of motion of the first inclined portion and the second inclined portion, and the intermediate member displaces within the range of the range of motion. (8) The vibration control system includes a V-shaped brace consisting of a first vertical frame and a second vertical frame extending downward from the reinforcing member, the vibration control damper arranged horizontally between the top of the V-shaped brace and the supporting portion of the beam, a first low-friction rotation mechanism that supports a first end of the reinforcing member, and a second low-friction rotation mechanism that supports a second end of the reinforcing member, and the V-shaped brace follows the horizontal inter-story displacement of the building, thereby attenuating vibration energy by the vibration control damper and the sway mechanism. (9) A second aspect of the bearing of the present invention is a bearing applicable to a vibration control system including a vibration control damper that attenuates horizontal vibrations of a building, and is equipped with a sway mechanism including sliding plates provided on the front and back surfaces of a slidably supported intermediate member, and constraint plates of a first constraint member and a second constraint member that slidably press against the sliding plates, respectively, and is characterized in that when the building vibrates, the sliding plate and the constraint plates slide relative to each other, thereby attenuating the reaction force of the vibration control damper that is transmitted to the columns of the building via the intermediate member. (10) A third aspect of the vibration control method of the present invention is a vibration control method that uses a vibration control damper that attenuates horizontal vibrations of a building, a sliding plate provided on the front and back surfaces of a slidably supported intermediate member, and a first restraint member and a second restraint member restraint plate that slidably press against the sliding plate, and includes attenuating the reaction force of the vibration control damper that is transmitted to the column of the building via the intermediate member by the sliding plate and the restraint plate sliding relative to each other when the building vibrates. The support related to the present invention is characterized by comprising an intermediate member that connects a first support portion provided on a first member of the structure and a second support portion provided on a second member of the structure so that they can swing relative to each other, a first shaft that is provided on the first support portion and supports one end of the intermediate member so that it can rotate relatively with low friction, a second shaft that is provided on the second support portion and supports the other end of the intermediate member so that it can rotate relatively with low friction, a first restraint member that is provided on the first support portion and presses the intermediate member slidably, and a second restraint member that is provided on the second support portion and presses the intermediate member slidably. When the structure vibrates due to an earthquake, strong winds, etc., even if the first and second members swing relative to each other via the intermediate member, the horizontal friction resistance between the first and second axes and the intermediate member is extremely small, preventing the swing of the first and second restraint members from being transmitted to the first member by slippage. Moreover, by shortening the distance from the first member to the first axis and the distance from the second member to the second axis, the additional bending moment can be reduced, allowing for a compact support.

[0009] Preferably, the first shaft has a first bearing that supports the intermediate member so as to be relatively rotatable, and the second shaft has a second bearing that supports the intermediate member so as to be relatively rotatable. The frictional resistance between the first and second shafts and the intermediate member is extremely small, so horizontal resistance is small.

[0010] It is also preferable that the first and second restraining members press the front and back surfaces of the intermediate member, respectively. The first restraint member provided on the first support section and the second restraint member provided on the second support section press the front and back surfaces of the intermediate member in a slidable manner, thereby reducing frictional resistance when the structure vibrates and allowing relative movement in the horizontal direction, thereby reducing horizontal resistance.

[0011] It is also preferable that low-friction sliding members be provided on the front and back surfaces of the intermediate member, which are pressed by the first and second restraint members, respectively. Even if the first member and the second member vibrate relative to each other via the intermediate member, the intermediate member and the first and second restraint members slide relative to each other, thereby further reducing horizontal resistance.

[0012] It is also preferable that the first restraint member and the second restraint member each have a position adjustment member that is screwed onto the first support portion and the second support portion, respectively, and is adjustable to move forward and backward, and a low-friction sliding portion that is pressed against the intermediate member. Even if the structure has dimensional errors or construction errors, the position of the intermediate member can be easily adjusted using the position adjustment members of the first and second restraint members, and the dimensional errors and construction errors can be absorbed, thereby suppressing deformation or buckling of the intermediate member.

[0013] The vibration control system according to the present invention is a vibration control system for a building having multiple layers, and is characterized by comprising a first member provided between layers of the building, a second member connected to the first member, a brace member installed on the second member, a vibration control damper provided between the brace member and a beam facing the second member to attenuate horizontal vibrations, and a bearing described in any of the above. According to the vibration control system of the present invention, even if vibration occurs in the structure, the reaction force of the vibration control damper can be absorbed within the range of motion of the intermediate member, and the horizontal reaction force is not transmitted to the first member via the first support part and the second support part. [Effects of the Invention]

[0014] The bearing and vibration damping system of the present invention supports the intermediate member between the first and second members so that it can rotate relatively about the first and second axes, thereby providing a large vertical bearing force and extremely small horizontal resistance. Moreover, the distances from the first and second members to the first and second axes can be set short, thereby reducing the additional bending moment. In addition, since the intermediate member is pressed by the first restraint member and the second restraint member, it is possible to adjust the position of the structure and absorb construction errors, preventing buckling of the intermediate member and providing excellent construction properties. [Brief explanation of the drawings]

[0015] [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 floors of a building; [Figure 2] 2 is an enlarged cross-sectional view showing a bearing of the vibration damping system shown in FIG. 1. [Figure 3] 3 is a cross-sectional view of the bearing shown in FIG. 2 taken along line AA. [Figure 4] 3 is a cross-sectional view of the bearing shown in FIG. 2 along line BB. [Figure 5] FIG. 1 is a diagram showing the basic configuration of a bearing. [Figure 6] FIG. 10 is a diagram showing the horizontal displacement of the support. [Figure 7] FIG. 10 is a diagram showing the horizontal displacement of the support. [Figure 8] (a) and (b) are cross-sectional views showing the basic structure of the bearing. [Figure 9] 10(a) and 10(b) are cross-sectional views showing horizontal construction errors in the bearings. [Figure 10] 10(a) and 10(b) are cross-sectional views showing horizontal construction errors in the bearings. [Figure 11] FIG. 10 is a diagram showing an additional bending moment occurring around the support. [Figure 12] FIG. 2 is a diagram showing a modified example of the vibration control system shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] A vibration damping device 1 (vibration damping system) equipped with a bearing S according to an embodiment of the present invention will be described below with reference to the accompanying drawings. 1 to 4 show a vibration damping device 1 according to an embodiment. The vibration damping device 1 shown in FIG. 1 is attached to the inter-story frame of the lower story of a building BL made of reinforced concrete, for example. The installation location of the vibration damping device 1 is not limited to the lower story, but it may be installed on any story (floor), such as the upper story. The vibration damping device 1 is disposed in a space (opening) 2 between any two stories of the building BL, where relative displacement is possible in the frame of the building BL. This building BL has many spaces 2 on the top, bottom, left, and right sides, partitioned by, for example, left and right columns P1 and P2 and upper and lower beams Q1 and Q2 on one floor.

[0017] 1, for example, a first support portion 5 is fixed to the inner surface 3 of the upper end portion of opposing columns P1 and P2 with fastening bolts (not shown) or the like. The first support portion 5 is formed, for example, into a generally rectangular cylindrical cross section, and has an inclined portion 5b facing upward, which has a generally U-shaped cross section and is cut out obliquely toward the upper beam Q1 to form an opening 5a. Furthermore, the surface (lower surface) of the upper beam Q1 of the space 2 that faces the lower beam Q2 is the first structural surface 6, and the upper surface (upper surface) of the lower beam Q2 is the second structural surface 4. A reinforcing member 7 made of a rod-shaped steel material having, for example, a substantially square-shaped cross section is arranged on the first structural surface (lower surface) 6 side of the upper beam Q1. An upper support part 8 having a substantially square-shaped cross section is fixed to the longitudinal center of the first structural surface 6. A part of the reinforcing member 7 forms an expanded portion 7a that expands toward the first structural surface 6, and this expanded portion 7a is housed within the upper support part 8. The reinforcing member 7 is supported by the expanded portion 7a so that it can swing around an upper pin 10 provided on the upper support part 8.

[0018] Second support portions 11 are fixed to both ends of the reinforcing member 7 at positions facing the first support portions 5. The second support portion 11 is formed, for example, into a generally rectangular cylindrical cross section, and has a downwardly extending inclined portion 11b having a generally U-shaped cross section that is cut diagonally toward the lower beam Q2 to form an opening 11a. Moreover, the inclined portion 5b of the first support portion 5 and the inclined portion 11b of the second support portion 11 are arranged opposite each other with a predetermined gap k therebetween, thereby forming openings 5a and 11a, respectively. The first support portion 5 and the second support portion 11 have a generally π-shaped or U-shaped cross section with front surfaces 5c and 11c, back surfaces 5d and 11d, and side surfaces 5e and 11e. An intermediate member 13 is disposed through these openings 5a, 11a and extends into the first support portion 5 and the second support portion 11. The intermediate member 13 is formed in the shape of, for example, a rectangular plate.

[0019] 3, one end of the intermediate member 13 is rotatably supported by the first support portion 5 via a first shaft 14, and the other end is rotatably supported by the second support portion 11 via a second shaft 15. A substantially spherical first bearing 16 is provided in the longitudinal center of the first shaft 14, and one end of the intermediate member 13 is supported by the first bearing 16 so as to be able to swing relative to the first shaft 14. A substantially spherical second bearing 17 is provided in the longitudinal center of the second shaft 15, and the other end of the intermediate member 13 is supported by the second bearing 17 so as to be able to swing relative to the second shaft 15. The spherical first bearing 16 and second bearing 17 make it possible to set extremely small frictional resistance between the first shaft 14, the second shaft 15 and the intermediate member 13. Therefore, the intermediate member 13 supported by the first bearing 16 and the second bearing 17 can swing with low friction in response to relative displacement of the first support portion 5 and the second support portion 11, and the horizontal resistance in the H1 direction is extremely small.

[0020] 2 and 4, the intermediate member 13 is composed of a rectangular plate-shaped substrate 19 and sliding plates 20 (sliding members) made of Teflon (registered trademark) or the like adhered to the front and back surfaces of the center of the longitudinal direction of the substrate 19. The intermediate member 13 is pressed from both the front and back surfaces by a first constraint member 22 screwed onto the front surface 5c and back surface 5d of the first support part 5 and a second constraint member 23 screwed onto the front surface 11c and back surface 11d of the second support part 11. First restraint member 22 includes position adjustment member 25A having a male thread portion that screws into threaded holes 24 formed in the front surface 5c and back surface 5d of first support portion 5, and restraint plate 26A with a low coefficient of friction that is provided at the tip of position adjustment member 25A. Similarly, second restraint member 23 includes position adjustment member 25B having a male thread portion that screws into threaded holes 24 formed in the front surface 11c and back surface 11d of second support portion 11, and restraint plate 26B with a low coefficient of friction that is provided at the tip of position adjustment member 25B. These restraint plates 26A and 26B (sliding portions) are also preferably made of a low-friction material such as Teflon.

[0021] Furthermore, a sway mechanism is formed by the respective constraining plates 26A, 26B of the first constraining member 22 and the second constraining member 23 and the sliding plate 20 of the intermediate member 13. When vibrations are transmitted to the first constraining member 22, the second constraining member 23 and the intermediate member 13 via the first support portion 5 and the second support portion 11, the constraining plates 26A, 26B and the sliding plate 20 have low friction with each other, so the vibrations can be absorbed by sliding relative to each other. Furthermore, even if manufacturing errors or construction errors occur in the columns P1, P2, beams Q1, Q2, first support portion 5, second support portion 11, etc., the intermediate member 13 can be held flat by adjusting the screw-in positions of the position adjustment members 25A and 25B, and buckling during swinging can be prevented. Furthermore, with the screw-in positions of the position adjustment members 25A and 25B of the first restraint member 22 and the second restraint member 23 adjusted, the position adjustment members 25A and 25B can be fixed in an appropriate position by tightening the locking nuts 28.

[0022] 1, a V-shaped brace 30, for example, is connected to the underside of the reinforcing member 7 as a frame extending in the direction of the second structural face 4 of the beam Q2 in the space 2. The V-shaped brace 30 is formed in a substantially V-shape by a first vertical frame 31 and a second vertical frame 32 extending downward from the reinforcing member 7, and the first vertical frame 31 forms a side that is longer than, for example, the second vertical frame 32. Furthermore, the apex 30a of the lower end of the V-shaped brace 30 extends near the second structural face 4 of the lower beam Q2, and a lower support 34 fixed to the second structural face 4 of the beam Q2 is provided nearby. The lower support 34 is formed in a roughly U-shape in cross section, and is fixed to the longitudinal center of the second structural face 4 of the lower beam Q2 with a fastening bolt or the like. A vibration damper 35 is connected between the lower support 34 and the apex 30a of the V-shaped brace 30. The vibration damper 35 is disposed in the longitudinal center of the second structural face 4.

[0023] Any type of damper can be used as the vibration damper 35, such as an oil damper, a friction damper, or a viscoelastic material (high-damping rubber). The vibration damper 35 has a cylinder 35a containing, for example, oil or a viscous material, fixed to a lower pin 36 provided on the lower support 34, and a piston rod 35b that moves back and forth within the cylinder 35a to damp vibrations is 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 attenuate horizontal vibrations that occur between the columns P1, P2 and the beams Q1, Q2.

[0024] The top 30a of the V-shaped brace 30 is able to swing relative to the lower pin 36. When the columns P1 and P2 swing horizontally, the V-shaped brace 30 is able to swing relative to the lower pin 36. Note that the attachment positions of the upper support 8 and upper pin 10 and the lower support 34 and lower pin 36 are preferably set at the longitudinal center of the beams Q1 and Q2, for example, so as not to generate a reaction force in a direction perpendicular to the material axis 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 horizontally relative to the upper pin 10 of the upper support 8.

[0025] In the vibration control device 1 according to this embodiment, a reinforcing member 7 is attached to the upper portion between the columns P1 and P2 and the beams Q1 and Q2 that make up the space 2 between the floors of the building BL. The reinforcing member 7 serves as the base of a V-shaped brace 30, connecting a first vertical frame 31 and a second vertical frame 32 to form a triangular frame. Furthermore, the widened portion 7a of the reinforcing member 7 is supported by the upper pin 10 of the upper support portion 8, and the top portion 30a of the V-shaped brace 30 is connected to the lower pin 36 of the lower support portion 34 via a vibration damper 35. Therefore, even if vibrations occur in the horizontal directions H1 and H2 during an earthquake or strong winds, the reaction force of the vibration damper 35 is not transmitted to the columns P1 and P2 via the reinforcing member 7 because the first restraint member 22 and the second restraint member 23 press the intermediate member 13 from the front and back sides due to bottom friction.

[0026] In this way, the upper pins 10 and lower pins 36 support the reinforcing members 7 and V-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 each structural face (axial force in the material axis direction of beams Q1 and Q2).As a result, reinforcement work for beams Q1 and Q2 on the upper and lower floors is not required, and reinforcement work for building BL can be carried out only within space 2. Furthermore, the first support parts 5 of the columns P1 and P2 and the second support parts 11 at both ends of the reinforcing member 7 are connected and supported via the first shaft 14 and the second shaft 15, so the vertical support force of the reinforcing member 7 is large. Moreover, horizontal vibrations are received by the first bearing 16 of the first shaft 14 and the second bearing 17 of the second shaft 15, so horizontal resistance is extremely small, and a compact support S can be obtained.

[0027] The vibration damping device 1 equipped with the bearing S according to this embodiment has the above-described configuration. Next, a method for damping vibrations of a building BL caused by earthquakes, strong winds, etc. will be described. When a supporting structure such as a foundation vibrates horizontally during an earthquake or strong wind, the building BL supported by the supporting structure responds by vibrating horizontally. When the building BL vibrates and deforms due to an earthquake or other event, horizontal inter-story displacement occurs between the upper and lower stories of each space 2 of the frame. In other words, the vibration of the building BL causes the columns P1 and P2 and beams Q1 and Q2 that make up the space 2 to move back and forth horizontally.

[0028] In Figure 5, the second support portions 11 at both ends of the reinforcing member 7 are supported by the first support portions 5 of each of the columns P1 and P2 via intermediate members 13 at a first axis 14 and a second axis 15. When an earthquake, strong wind, or the like occurs, the building BL swings horizontally, causing the reinforcing member 7 to swing around the upper pin 10 of the upper support portion 8 of the first structural face 6 of the upper beam Q1. Also, in Figures 6 and 7, the range of motion of the reinforcing member 7 due to the intermediate member 13 and the first axis 14 and second axis 15 at both ends thereof is t1 in the region where the first support portion 5 and the second support portion 11 on one side approach each other, and t2 in the region where they are separated on the other side.

[0029] 6, when the reinforcing member 7 swings in the horizontal direction H1 during an earthquake or the like and one of the second support portions 11 approaches the column P2 side, the second support portion 11 and the first support portion 5 at one end of the reinforcing member 7 approach each other within a movable range t1, and at the other end, the second support portion 11 moves away from the first support portion 5 within a movable range t2. This causes the intermediate member 13 to rotate clockwise around the first shaft 14 and the second shaft 15. The first shaft 14 and the second shaft 15 support both ends of the intermediate member 13 via the first bearing 16 and the second bearing 17, so the frictional resistance in these areas is extremely small.

[0030] The oscillation of the intermediate member 13 is caused by the relative rotation of the first shaft 14 held by the first support portion 5 and the second shaft 15 held by the second support portion 11 with respect to the intermediate member 13. Furthermore, the constraint plates 26A, 26B of the first constraint member 22 and the second constraint member 23 slide relatively on the sliding plates 20 on the front and back surfaces of the intermediate member 13 with a small coefficient of friction, causing the intermediate member 13 to move. As shown in Figure 1, the reinforcing member 7, which oscillates in the horizontal direction H1, generates a reaction force when the piston rod 35b of the vibration damper 35 is pulled out from the cylinder 35a, thereby suppressing vibration. Moreover, a variable range of motion is provided between the first support part 5 and the second support part 11, ranging from t1 to t2, so the reinforcing member 7 follows and displaces within the range of motion. The horizontal reaction force of the reinforcing member 7 is prevented from being transmitted to the columns P1 and P2 by the intermediate member 13 and the first and second axes 14 and 15.

[0031] Next, when the reinforcing member 7 swings reversely from horizontal direction H1 to horizontal direction H2 and approaches column P1, the second support portion 11 and the first support portion 5 approach each other at one end of the reinforcing member 7, and at the other end, the second support portion 11 moves away from the first support portion 5, as shown in Fig. 7. This causes the intermediate member 13 to rotate counterclockwise around the first shaft 14 and the second shaft 15. The first shaft 14 and the second shaft 15 support both ends of the intermediate member 13 via the first bearing 16 and the second bearing 17, so the frictional resistance in these areas is extremely small.

[0032] The oscillation of the intermediate member 13 is achieved by the relative rotation of the first shaft 14 of the first support portion 5 and the second shaft 15 of the second support portion 11 with respect to the intermediate member 13, and the restraint plates 26A, 26B of the first restraint member 22 and the second restraint member 23 slide relatively on the sliding plates 20 on the front and back surfaces of the intermediate member 13 with a small coefficient of friction, thereby moving the intermediate member 13. As shown in Figure 1, the reinforcing member 7 oscillates in the horizontal direction H2, and a reaction force acts when the piston rod 35b of the vibration damper 35 is pressed into the cylinder 35a, thereby suppressing vibration. Moreover, a variable range of motion t1-t2 is provided between the first support part 5 and the second support part 11, so the reinforcing member 7 follows and displaces within the range of the range of motion. The horizontal reaction force of the reinforcing member 7 is prevented from being transmitted to the pillars P1 and P2 by the intermediate member 13, the first axis 14, and the second axis 15.

[0033] 8 to 10, a method of adjusting the positions of the building structure BL and the reinforcing member 7 in the horizontal directions V1 and V2 perpendicular to the horizontal directions H1 and H2 to accommodate dimensional errors and construction errors will be described. 8(a) and 8(b), the intermediate member 13 is supported by the first support portion 5 and the second support portion 11 via a first bearing 16 provided on the first shaft 14 and a second bearing 17 provided on the second shaft 15. Moreover, the intermediate member 13 is pressed and supported from the front and back sides by position adjustment members 25A and 25B of the first restraint member 22 and the second restraint member 23 so that its position can be adjusted. Therefore, even if there are dimensional errors or construction errors in the first support portion 5, the second support portion 11, and the intermediate member 13, these can be absorbed by adjusting the amount of screwing of the position adjustment members 25A and 25B into the threaded holes 24 of the first support portion 5 and the second support portion 11.

[0034] 9(a) and 9(b), even if there is a relative error in the horizontal direction V1 in the installation position of the reinforcing member 7 with respect to the pillars P1 and P2, the tightening positions of the position adjustment members 25A and 25B of the first restraint member 22 and the second restraint member 23 with respect to the intermediate member 13 can be adjusted forward and backward in the horizontal direction V1. This allows the intermediate member 13 to be fixed to the first support part 5 and the second support part 11 without tilting or bending at the fixed position. In this state, the nuts 28 can be tightened and fixed to the position adjustment members 25A and 25B.

[0035] 10(a) and 10(b), even if there is a relative error in the horizontal direction V2 in the installation position of the reinforcing member 7 with respect to the pillars P1 and P2, the tightening amounts of the position adjustment members 25A and 25B of the first restraint member 22 and the second restraint member 23 relative to the intermediate member 13 can be adjusted back and forth in the horizontal direction V2. This allows the intermediate member 13 to be fixed to the first support part 5 and the second support part 11 without tilting or bending at the fixed position. In this state, the nuts 28 can be tightened and fixed to the position adjustment members 25A and 25B.

[0036] 11, the load due to the weight of the structure BL or an external disturbance such as an earthquake is N, the load acting on the first axis 14 of the first support part 5 is N1, and the load acting in the opposite direction on the second axis 15 of the second support part 11 is N2, where N1 = N2 = N. Furthermore, the distance from the load application point (first axis 14) of the first support part 5 to the columns P1 and P2 (structure BL) is L1, and the distance from the load application point (second axis 15) of the second support part 11 to the reinforcing member 7 (structure BL) is L2. The additional bending moment M1 generated around the first axis 14 (bearing S) of the columns P1 and P2 and the additional bending moment M2 generated around the second axis 15 (bearing S) of the reinforcing member 7 are as follows: M1=N1×L1 M2=N2×L2 Therefore, by setting the distances L1 and L2 short for the predetermined loads N1 and N2, the additional bending moments M1 and M2 can be reduced.

[0037] As described above, according to the bearing S and vibration control device 1 of this embodiment, the intermediate member 13 that connects the first support portions 5 of the existing columns P1 and P2 of the building BL to the second support portion 11 of the reinforcing member 7 provided on the beam Q1 is supported by the first bearing 16 provided on the first shaft 14 and the second bearing 17 provided on the second shaft 15. Therefore, a compact bearing S with large vertical bearing force and extremely small horizontal resistance can be obtained. Furthermore, since both ends of the intermediate member 13 are supported by the first bearing 16 and the second bearing 17 provided respectively on the first shaft 14 and the second shaft 15 that support the intermediate member 13, the frictional resistance and horizontal resistance of the intermediate member 13 are extremely small. Therefore, the reinforcing member 7 can follow the horizontal displacement within the movable range t1 to t2 provided between the first support portion 5 and the second support portion 11.

[0038] Furthermore, the sliding plates 20 on the front and back surfaces of the intermediate member 13 are pressed with low friction by the restraint plates 26A and 26B of the first restraint member 22 and the second restraint member 23, providing a sway mechanism that allows smooth sliding. Therefore, the reaction force of the vibration dampers 35 is not transmitted from the reinforcing member 7 to the columns P1 and P2 during vibrations caused by earthquakes, strong winds, etc. First and second restraint members 22 and 23, which have low frictional resistance, are provided on the first and second support parts 5 and 11 to press and support the intermediate member 13, and the clamping position of the intermediate member 13 can be adjusted within the adjustment range of the position adjustment members 25A and 25B, preventing buckling. Moreover, by adjusting the position of the intermediate member 13, dimensional errors and construction errors of the building BL can be absorbed.

[0039] 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. Modifications of the present invention will be described below, but parts and members that are the same as or similar to those in the above-described embodiment will be designated by the same reference numerals and will not be described again.

[0040] For example, in the embodiment described above, the reinforcing member 7 is supported on the upper pin 10 of the upper support 8 of the upper beam Q1 in the space 2 of each floor of the building BL, and the first support parts 5 of the existing columns P1 and P2 are connected to the second support parts 11 on both ends of the reinforcing member 7 via intermediate members 13. Then, a vibration damper 35 is provided on the lower pin 36 of the lower support part 34 provided on the beam Q2, and the vibration damper 35 is connected to the top part 30a of the V-shaped brace 30 provided on the reinforcing member 7. However, the present invention is not limited to the above-mentioned configuration. As a modified example, as shown in Fig. 12, a reinforcing member 7 may be provided on the lower beam Q2, and second support portions 11 at both ends of the reinforcing member 7 may be connected via intermediate members 13 to first support portions 5 provided at the bottom of columns P1 and P2. In this case, a vibration damper 35 may be connected between a V-shaped brace 30 provided on the reinforcing member 7 and an upper pin 10 of an upper support portion 8 provided on the beam Q1.

[0041] 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 may be connected. The V-shaped brace 30 and the substantially rectangular frame-shaped brace are included in the brace members. The columns P1 and P2 are included in the first member. The reinforcing member 7 is included in the second member. Furthermore, the vibration control device 1 and the bearing S can be installed at any location on the building BL, and the number of installations can be selected as appropriate. Furthermore, in the above-described embodiment, the bearing S and the vibration control device 1 attached to the building BL are described, but the present invention is not limited to the building BL, and can also be applied to structures other than the building BL, including various facilities and equipment. [Explanation of symbols]

[0042] 1. Vibration control device 4 Second structural face 5 First support part 6 First structural face 7 Reinforcement members 8 Upper receiving part 10 Upper Pin 11 Second support part 13 Intermediate parts 14 First axis 15 Second axis 16 First bearing 17 Second bearing 20 Slide 22 First restraining member 23 Second restraining member 24 screw holes 25A, 25B position adjustment member 26A, 26B restraint plate 28 Nut 30 V-brace 34 Lower support 35 Vibration damper 36 Lower Pin P1, P2 pillar Q1, Q2 beam

Claims

1. A vibration control system including a vibration control damper that attenuates horizontal vibrations of a building, a sway mechanism including: a sliding plate provided on the front and rear surfaces of the intermediate member slidably supported; and a first restraining member and a second restraining member that slidably press the sliding plate, respectively; Equipped with When the building vibrates, the sliding plate and the restraining plate slide relative to each other, thereby attenuating the reaction force of the vibration damper that is transmitted to the pillar of the building via the intermediate member. A vibration control system characterized by:

2. The restraint plate is a first support portion restraining plate supported by the first support portion supported by the pillar; Including, The sway mechanism includes: Attenuating the reaction force of the vibration damper transmitted via the intermediate member and the first support portion The vibration control system of claim 1 .

3. The first support portion is The intermediate member is slidably supported via a first shaft provided in the first support portion. The vibration control system of claim 2 .

4. Reinforcement members installed parallel to the beams and floors of the building Equipped with The restraint plate is a second support portion restraining plate supported by the second support portion supported by the reinforcing member; Including, The sway mechanism includes: Attenuating the reaction force of the vibration damper transmitted via the intermediate member and the second support portion The vibration control system of claim 3.

5. The second support portion is The intermediate member is slidably supported via a second shaft provided in the second support portion. The vibration control system of claim 4 .

6. the first support portion supports the first shaft by a first bearing having a first inner surface that is substantially spherical; The second support portion supports the second shaft by a second bearing having a second inner surface that is substantially spherical. The vibration control system of claim 5 .

7. the first support portion includes a first inclined portion formed at a first end portion in a first direction in the up-down direction, the second support portion includes a second inclined portion formed at a second end portion in a second direction in the up-down direction, the first inclined portion and the second inclined portion are disposed opposite to each other, When in a non-vibrating state, the first inclined portion and the second inclined portion are spaced apart, The space between the first inclined portion and the second inclined portion is a movable range, The intermediate member is displaced accordingly within the range of the movable range. The vibration control system of claim 6.

8. A V-shaped brace composed of a first vertical frame and a second vertical frame extending downward from the reinforcing member; The vibration damper is disposed horizontally between the top of the V-shaped brace and the bottom support of the beam; a first low-friction rotation mechanism that supports a first end of the reinforcing member; a second low-friction rotation mechanism supporting a second end of the reinforcing member; Equipped with The V-shaped brace follows the horizontal inter-story displacement of the building, and the vibration energy is attenuated by the vibration damper and the sway mechanism. The vibration control system of claim 6.

9. A bearing applicable to a vibration control system including a vibration control damper that attenuates horizontal vibrations of a building, a sway mechanism including: a sliding plate provided on the front and rear surfaces of the intermediate member slidably supported; and a first restraining member and a second restraining member that slidably press the sliding plate, respectively; Equipped with When the building vibrates, the sliding plate and the restraining plate slide relative to each other, thereby attenuating the reaction force of the vibration damper that is transmitted to the pillar of the building via the intermediate member. A bearing characterized by:

10. a vibration damper that attenuates horizontal vibrations of the building; A vibration damping method using a sliding plate provided on the front and rear surfaces of a slidably supported intermediate member, and a first constraining member and a second constraining member that slidably press the sliding plate, When the building vibrates, the sliding plate and the restraining plate slide relative to each other, thereby attenuating the reaction force of the vibration damper that is transmitted to the pillar of the building via the intermediate member. A vibration damping method comprising:

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