JP6502116B2 - Vibration control device - Google Patents

Description

  The present invention relates to a damping device.

  In recent years, there has been known an example in which a tuned mass damper (TMD), which has been used to damp the vibration of a building due to wind sway, is used as a damping device for earthquakes. As such a damping device, Patent Literature 1 discloses a damping device configured by supporting a mass body with a plurality of laminated rubbers.

Japanese Patent Laid-Open No. 2002-48187

  However, in the invention of Patent Document 1, in order to slide the mass in two horizontal directions, a rotating body, a spring member, and the like are provided, and the structure is complicated. Also, it is difficult to tune in to the natural period of the building. As another damping device, there is known a structure in which a plurality of mass bodies are provided and displaced only in different directions so as to correspond to a building having different natural periods in two horizontal directions. It is difficult to secure the installation place.

  An object of the present invention is to provide a vibration control device that can be used in a building having different horizontal periods in two directions with a simple configuration in consideration of the above-mentioned facts.

The damping device according to the present invention according to claim 1 comprises a mass body, a laminated rubber disposed between the mass body and a pedestal, between the pedestal and the laminated rubber , or the laminated rubber And a one-way slider disposed between the mass body and slidably coupling the laminated rubber or the mass body in one horizontal direction.

According to the vibration damping device in accordance with the first aspect of the present invention, the laminated rubber is disposed between the mass body and the rack. In addition, a one-way slider is disposed between the mount and the laminated rubber or between the laminated rubber and the mass body. Here, the one-way slider slidably connects the laminated rubber or the mass in one horizontal direction. Thus, for example, if the natural period of a building placed the one-way slider to slide in the direction of longer, without function one direction slider even shaking buildings in a short direction of the natural period an earthquake or the like, the laminated rubber The vibration of the mass is synchronized with the vibration of the building to suppress vibration. On the other hand, when the building swings in the direction in which the natural period is long, the laminated rubber or the mass slides in one horizontal direction by the one-way slider, and the period of the mass can be lengthened. That is, the vibration control can be performed by tuning the period of the mass body in a building having different natural periods in two horizontal directions.

In addition, one mass can be used to synchronize the vibration of the mass to a building having different natural periods in two horizontal directions. Furthermore, the vibration of the mass body can be synchronized to a building having different natural periods in two horizontal directions by a simple configuration combining a laminated rubber and a one-way slider.

The vibration control device according to the present invention according to claim 2 is the vibration control device according to claim 1, which is disposed on the gantry, and the mass body can be relatively displaced in the horizontal direction with respect to the gantry. And the unidirectional slider is disposed between the mount and the laminated rubber, and the laminated rubber is disposed on the unidirectional slider and the mass body There is a gap between them and fitted in a fitting member attached to the lower surface of the mass body.

According to the vibration control device of the second aspect of the present invention, the mass body is horizontally displaceably supported by the support disposed on the rack. Further, the laminated rubber disposed on the one-way slider is fitted to the fitting member so that the load of the mass body does not act. This makes it possible to design without considering the load resistance of the laminated rubber .

  The vibration control device according to the present invention as set forth in claim 3 is the vibration control device according to claim 2, wherein the vibration control device according to the present invention is disposed on the gantry with a gap between the mass body and the mass A bi-directional slider is provided which supports the mass and allows it to slide horizontally in two directions during horizontal displacement of the body.

  According to the vibration control device in accordance with the third aspect of the present invention, even if the support is greatly deformed during a large earthquake, the load of the mass is received by the two-way slider, so an excessive load is applied to the support. Does not work, and can suppress buckling of the support. That is, the damping performance can be maintained well.

  As explained above, according to the vibration control device according to the present invention, it can be used for a building with different unique cycles in two horizontal directions with a simple configuration.

BRIEF DESCRIPTION OF THE DRAWINGS It is a top view which shows the whole structure of the damping device which concerns on embodiment, and is the figure which fractured | ruptured partially. It is the side view which looked at the damping device of FIG. 1 from the Y direction, and is the figure which fractured partially. It is a side view corresponding to Drawing 2 in the state where a building is vibrating in the direction of X. It is a principal part enlarged side view which expands and shows the side view which looked at the damping device of FIG. 1 from the X direction. It is a principal part enlarged side view corresponding to Drawing 4 in the state where a building is vibrating in the direction of Y.

  Hereinafter, the damping device 10 according to the embodiment of the present invention will be described with reference to the drawings. For example, a building to which the damping device 10 of the present embodiment is applied is a high-rise tenant building of 50 floors or more, and the damping device 10 of the present embodiment is disposed in a tower of this building. In addition, you may apply not only to a high-rise tenant building, but to a high-rise apartment building or another building, for example, you may apply to the building of the middle or lower class. Moreover, you may arrange | position not only in a tower but in other places, for example, you may arrange | position the damping apparatus 10 on the roof of a building. Moreover, you may arrange the damping device 10 inside the middle floor of a building.

  Furthermore, the building in which the damping device 10 is disposed has a structure in which the natural period differs in two horizontal directions. In this embodiment, as an example, the natural period of the building becomes longer in the Y direction than in the X direction. ing. Moreover, the arrow Z suitably shown in each figure has shown the height direction (up-down direction) of the building, and the arrow X and the arrow Y suitably shown in each figure have shown two horizontal directions orthogonal to each other.

  As shown in FIG. 1, the vibration damping device 10 of the present embodiment is a TMD disposed on a gantry 100, and mainly includes a mass body 12, a laminated rubber 14 as a support, and a one-way slider 18. It is configured to include a cycle adjustment device 16 configured by a laminated rubber 20 as a seismic isolation device, a two-way slider 24, and a damper 30.

  The mass body 12 is formed in a substantially rectangular shape in plan view, and the four corners are supported by a laminated rubber 14 described later. The mass (weight) of the mass body 12 is appropriately set according to the period of the building to be damped and the like, and is set to 750 t as an example in the present embodiment. Further, the material and the shape of the mass body 12 are not particularly limited, and may be determined according to the installation place of the damping device 10 or the like. Therefore, for example, the mass body 12 may be formed in a substantially polygonal shape in plan view.

  The laminated rubbers 14 supporting the four corners of the mass body 12 are installed on the gantry 100 as shown in FIG. 2 and support the mass body 12 so as to be horizontally displaceable relative to the gantry 100. . Specifically, the laminated rubber 14 includes a lower flange 14B, an upper flange 14C, and a main body portion 14A provided between the lower flange 14B and the upper flange 14C. The lower flange 14B is fixed to the gantry 100 by a bolt or the like (not shown), and the upper flange 14C is fixed to the lower surface side of the mass 12 by a bolt or the like (not shown). Further, the main body portion 14A is formed by laminating a rubber plate and a steel plate in the vertical direction, and is configured to be horizontally deformable.

  In the present embodiment, the laminated rubber 14 is provided as a support, but the present invention is not limited to this, as long as the mass body 12 can be supported relative to the gantry 100 in the horizontal direction so as to be relatively displaceable. The support of may be used. For example, instead of the laminated rubber 14, an elastically deformable elastic body may be used as a support. Further, the number and size of the laminated rubber 14 are not particularly limited. For example, five or more laminated rubbers 14 may be disposed. Moreover, the structure supported by three or less laminated rubber 14 may be sufficient. Furthermore, according to the height which supports the mass body 12, you may arrange | position the laminated rubber 14 two steps or more up and down.

  As shown in FIG. 1, a period adjustment device 16 is disposed between the laminated rubbers 14 in the X direction. The cycle adjusting device 16 is provided at both ends of the damping device 10 in the Y direction, and the cycle adjusting device 16 is configured to include a one-way slider 18 and a laminated rubber 20. The laminated rubber 20 is disposed between the mass body 12 and the rack 100 as shown in FIG. 2 and is disposed on the one-way slider 18 in the present embodiment. Further, the laminated rubber 20 includes the lower flange 20B, the upper flange 20C, and the main body 20A as the laminated rubber 14, and the lower flange 20B is fixed to the one-way slider 18 by a bolt or the like not shown. There is.

  Here, the upper flange 20C is fitted to a base plate 38 as a fitting member attached to the lower surface of the mass body 12, and a gap 36 is provided between the upper flange 20C and the mass body 12 . In detail, the base plate 38 is formed to have a diameter larger than that of the upper flange 20C, and in the central portion of the lower surface of the base plate 38, a recess 38A having a shape obtained by hollowing out a cylindrical body is formed. The recess 38A is formed to be slightly larger in diameter than the upper flange 20C, and the upper flange 20C is fitted to the recess 38A. The term "fitting" used herein is not limited to the configuration in which the upper flange 20C is fitted to the base plate 38 without a gap, but broadly includes a configuration in which a gap due to a design error or the like is present. Therefore, when the laminated rubber 20 can be deformed via the base plate 38 when the building (the gantry 100) and the mass body 12 move relative to each other in the horizontal direction, a gap (the upper flange 20C and the base plate 38) There may be play.

  The one-way slider 18 below the laminated rubber 20 is disposed between the rack 100 and the laminated rubber 20, and slidably couples the laminated rubber 20 in one horizontal direction. Specifically, as shown in FIG. 1, in the one-way slider 18, rails extend along the Y direction, and the laminated rubber 20 is fixed on the rails. For this reason, the laminated rubber 20 is slidable only in the Y direction by the one-way slider 18 as shown by the arrow P in the figure.

  Since the cycle adjustment device 16 is configured as described above, when the building (mount 100) sways in the Y direction, the building (mount 100) and the laminated rubber 20 (mass 12) with the one-way slider 18 Move relative to each other. On the other hand, when the building (challenge 100) sways in the X direction, the laminated rubber 20 does not slide, so the main body 20A of the laminated rubber 20 together with the main body 14A of the laminated rubber 14 moves in the X direction as shown in FIG. Transform into

  Although the laminated rubber 20 is disposed on the one-way slider 18 in the present embodiment, the present invention is not limited to this. For example, the laminated rubber 20 may be disposed on the pedestal 100, and the one-way slider 18 may be disposed on the laminated rubber 20. In this case, the one-way slider 18 slidably connects the mass body 12 in one horizontal direction with respect to the gantry 100 (laminated rubber 20). Moreover, in this embodiment, although the period adjustment apparatus 16 was arrange | positioned at the both ends of the Y direction of the damping device 10, it does not limit about the number and the position of the period adjustment apparatus 16. FIG.

  Further, in the present embodiment, as shown in FIG. 1, the lower flange 20B of the laminated rubber 20 is substantially rectangular in plan view, but the present invention is not limited to this. For example, you may form circularly similarly to the laminated rubber 14. Furthermore, a pedestal having a substantially rectangular shape in plan view may be provided on the one-way slider 18, and the lower flange 20B may be fixed on the pedestal.

  A two-way slider 24 is disposed between the laminated rubbers 14 in the Y direction. The bi-directional slider 24 is provided at both ends of the damping device 10 in the X direction, and includes a lower rail portion 28, an upper rail portion 26, and a block 40, as shown in FIG. It is done.

  The lower rail portion 28 is disposed on the gantry 100 and extends in the Y direction, and a groove 28A extending in the Y direction is formed at the central portion in the width direction of the lower rail portion 28. Also, a block 40 is disposed on the lower rail portion 28, and the block 40 is in the groove 28A. For this reason, the block 40 is slidable in the Y direction along the groove 28A. Further, the upper rail portion 26 extended in the X direction is disposed above the block 40, and the block 40 enters a groove 26A formed in the widthwise central portion of the upper rail portion 26. For this reason, the block 40 is slidable in the X direction along the groove 26A.

  Since the two-way slider 24 is configured as described above, it can slide in two horizontal directions (X direction, Y direction). Here, a gap 42 is provided between the upper rail portion 26 and the mass body 12. The size of the gap 42 is appropriately set according to the size of the mass body 12 and the like, and is set to 2 to 3 mm as an example in the present embodiment.

  Further, as shown in FIG. 5, when the mass body 12 is horizontally displaced, the bi-directional slider 24 supports the mass body 12 so that it can be slid in the horizontal direction. The configuration of the two-direction slider 24 is not particularly limited, and another configuration may be adopted as long as it can slide in two horizontal directions.

  As shown in FIG. 1, four dampers 30 are disposed in the damping device 10. Each of the dampers 30 connects the mass body 12 and the gantry 100, and is configured to attenuate relative displacement between the gantry 100 and the mass body 12. In detail, the mounting bracket 34 is provided on the pedestal 100 in the vicinity of the lower flange 14 B of the laminated rubber 14 disposed at the four corners of the damping device 10, and one end of the damper 30 is attached to the mounting bracket 34. ing. On the other hand, the other end of the damper 30 is attached to a mounting plate 32 fixed to the lower surface of the mass body 12, and the gantry 100 and the mass body 12 are connected by the damper 30. In the present embodiment, an oil damper is used as the damper 30. However, the present invention is not limited to this, and another damper may be used.

(Action and effect)
Next, the operation and effects of the vibration damping device 10 of the present embodiment will be described. First, the case where the vibration energy input to the building due to wind sway, earthquake or the like is relatively small will be described. In such a case, when the building sways in the X direction having a short natural period, the main body portion 14A of the laminated rubber 14 supporting the mass body 12 is deformed, and the mass body 12 is X with respect to the building (mount 100). Move relative to the direction.

  Here, as shown in FIG. 3, since the one-way slider 18 of the period adjustment device 16 extends in the Y direction, it does not function against swing in the X direction. Therefore, the main body portion 20A of the laminated rubber 20 deforms in the same manner as the laminated rubber 14. And the cycle of the X direction of the mass body 12 is adjusted to be synchronized with the cycle of the X direction of the building by the laminated rubber 14 and the laminated rubber 20, and the laminated rubber 14 and the laminated rubber 20 are deformed to make the building It is damped.

  On the other hand, when the building sways in the Y direction having a long natural period, the laminated rubber 14 supporting the mass body 12 is deformed, and the mass body 12 moves relative to the building (the gantry 100) in the Y direction. On the other hand, in the period adjustment device 16, the laminated rubber 20 slides along with the mass 12 in the direction of the arrow P along the one-way slider 18 as shown in FIG. 1. For this reason, the laminated rubber 20 hardly deforms in the Y direction, and the cycle of the mass body 12 can be made longer than in the X direction. As a result, even when the building shakes in the long Y direction of the natural period, the damping device 10 can be similarly tuned, and the building can be damped. In particular, in the present embodiment, the upper flange 20C of the laminated rubber 20 of the period adjustment device 16 is fitted to the base plate 38 so that the load of the mass body 12 does not act on the laminated rubber 20. Thereby, it is possible to design without considering the load resistance of the laminated rubber 20. That is, the period can be adjusted using a small-diameter laminated rubber not suitable for supporting the mass body 12.

  Further, in the present embodiment, since the cycle adjustment device 16 is configured by the one-way slider 18 and the laminated rubber 14, the vibration of the mass body 12 is applied to a building having different natural cycles in two horizontal directions with a simple configuration. It can be synchronized. Furthermore, if the unidirectional slider 18 and the laminated rubber 14 use existing ones, it is possible to save labor and cost for newly designing.

  Further, in the present embodiment, since the laminated rubber 14 is disposed on the one-way slider 18, better damping performance is maintained as compared with the structure in which the one-way slider 18 is disposed on the laminated rubber 14. can do. That is, in the structure in which the one-way slider 18 is disposed on the laminated rubber 14, when the mass body 12 slides, the positional relationship with the laminated rubber 14 may be shifted, but the laminated rubber on the one-way slider 18 When 14 is arranged, the positional relationship between the laminated rubber 14 and the mass body 12 does not change, and the damping performance can be maintained well.

  In the above description, the case where the building sways in the X direction and the case where the building sways in the Y direction is described. However, when the building sways in both the X direction and the Y direction, vibration is controlled in both directions. That is, the laminated rubber 20 of the period adjustment device 16 is deformed in the X direction while sliding in the Y direction by the one-way slider 18. Further, when the vibrational energy is relatively small, the gap 42 between the two-way slider 24 and the mass body 12 is in a state of being present.

  Next, the case where the vibrational energy input to the building is relatively large as in the case of a large earthquake or the like will be described. In the following description, although the case of swinging largely in the Y direction is described, the same applies to the case of swinging largely in the X direction. In this case, the laminated rubber 14 supporting the mass body 12 is largely deformed in the Y direction, and the mass body 12 moves relative to the building (the gantry 100) in the Y direction.

  At this time, as shown in FIG. 5, the main body portion 14A of the laminated rubber 14 is largely deformed, so that the area of the mass body 12 which receives the vertical load is reduced. That is, the vertical supporting force of the laminated rubber 14 is temporarily reduced. As a result, when the mass body 12 is lowered, the lower surface of the mass body 12 contacts the upper surface of the upper rail portion 26 constituting the two-way slider 24 and at least a part of the load of the mass body 12 transfers to the two-way slider 24. Also, the two-way slider 24 slides in the Y direction in accordance with the displacement of the mass body 12. As described above, when the two-way slider 24 bears the load of the mass body 12, an excessive load does not act on the laminated rubber 14, and buckling of the laminated rubber 14 can be suppressed. That is, the damping performance of damping device 10 can be maintained satisfactorily.

  Further, as in the present embodiment, the laminated rubber 14 is disposed on the outer peripheral portion of the mass body 12, and the two-direction slider 24 is disposed between the laminated rubber 14, so that the load of the mass body 12 can be made smooth smoothly. Can be transferred to That is, in the case of the structure in which the two-way slider 24 is disposed on the outer peripheral portion of the mass body 12, the end of the mass body 12 jumps out, so there is a possibility of bending downward, and the load of the mass body 12 is two-way It becomes difficult to move to the slider 24. On the other hand, in the present embodiment, the end portion of the mass body 12 is supported by the laminated rubber 14, and the two-way slider 24 is disposed on the center side of the mass body 12 to make the load of the mass body 12 smooth. Can be transferred to the two-way slider 24 to reduce the load of the laminated rubber 14 at the time of large deformation.

  In the present embodiment, the gap 36 is provided between the laminated rubber 20 of the period adjustment device 16 and the mass body 12 so as not to bear the load of the mass body 12. However, the present invention is not limited thereto. The upper flange 20C may be fixed to the mass body 12 to support the mass body 12. In this case, since the load that the laminated rubber 14 bears is reduced, a laminated rubber with a smaller diameter can be used.

  Further, separately from the cycle adjusting device 16, a laminated rubber for rigidity adjustment (rubber for rigidity adjustment) may be separately disposed. For example, by fixing the lower flange of the rigidity adjusting rubber to the pedestal 100 and fitting the upper flange to the base plate fixed to the lower surface of the mass 12, the load of the mass 12 is loaded similarly to the cycle adjusting device 16. Stiffness adjustment can be performed without.

  Further, in the present embodiment, the configuration in which the damping is performed by the TMD is not limited thereto, and may be an AMD (Active Mass Damper) in which the mass body 12 is actively moved for damping. As an example of this AMD, there is a method of attaching the actuator and the sensor to the mass body 12 and operating the actuator according to the magnitude of the vibration energy input to the building, thereby moving the mass body 12 relative to the mount 100 is there.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such embodiment, Of course in the range which does not deviate from the summary of this invention, it can implement in a various aspect. For example, in the present embodiment, as shown in FIG. 2, the upper flange 20C of the laminated rubber 20 is fitted in the recess 38A of the base plate 38 as the fitting member, but the present invention is not limited to this. For example, instead of the base plate 38, a pin may be protruded downward from the mass 12 and a fitting hole in which the pin is fitted may be formed on the upper flange 20C side. In this case, the pin is the fitting member of the present invention. Further, by providing a gap between the lower end of the pin and the bottom of the fitting hole formed in the upper flange 20C, the load of the mass body 12 does not act on the laminated rubber 20 as in the present embodiment. .

10 Damping device 12 Mass 14 Laminated rubber (support)
18 One-way Slider 20 Laminated Rubber (Base Isolation Device)
24 Two-way slider 36 Clearance (clearance between seismic isolation device and fitting member)
38 Base plate (fitting member)
42 Gap (gap between mass and two-way slider)
100 mounts

Claims (3)

Mass body,
Laminated rubber disposed between the mass body and the pedestal;
A one-way slider disposed between the rack and the laminated rubber or between the laminated rubber and the mass body, and slidably connecting the laminated rubber or the mass body in one horizontal direction;
Vibration damping device. A support disposed on the rack and supporting the mass relative to the rack in a horizontally displaceable manner;
The one-way slider is disposed between the mount and the laminated rubber,
The laminated rubber according to claim 1, wherein the laminated rubber is disposed on the one-way slider and fitted to a fitting member attached to the lower surface of the mass with a gap between the laminated rubber and the mass. Vibration control device.   A two-way slider is provided which is disposed on the rack with a gap between the mass body and the mass body, and which supports the mass body in the horizontal displacement of the mass body so as to be slidable in two horizontal directions. The damping device as described in 2.

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