Synchronous mass damper device

Abstract

To provide a synchronous mass damper device that can be realized with a compact structure and reduce the size of a space required for installation.SOLUTION: A synchronous mass damper device 1A being the synchronous mass damper device 1A that is installed at the top of a building 100 and damps vibrations acting on the building 100, comprises: a weight body 2 which is provided in a manner of being relatively movable in the horizontal direction relative to the building 100 and has a polygonal shape in plan view; a plurality of first laminated rubber bearings 4 which are provided below vertices 2p forming the polygonal-shaped weight body 2, and support the weight body 2; a plurality of first oil dampers 5 which are arranged to extend on lines connecting a central portion 2c of the polygonal-shaped weight body 2 and the vertices 2p in plan view; and a first damper mounting member 8A which is provided below the central portion 2c of the weight body 2 in a manner of being unable to relatively move relative to the lower side of the first laminated rubber bearings 4. Each of the first oil dampers 5 has one end 5a connected to the first damper mounting member 8A and the other end 5b connected to the weight body 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tuned mass damper device that is installed at the top of a building to damp vibrations acting on the building. [Background technology]

[0002] Tuned Mass Damper (TMD) devices are sometimes installed in high-rise buildings to control vibrations. When vibrations occur in the building due to earthquakes, strong winds, etc., a Tuned Mass Damper device reduces the vibrations by applying a force to the building that tries to suppress the building's vibrations by vibrating a weight that is installed so as to be able to move relatively to the building at a period that is in tune with the period of the building's vibration. In this regard, Patent Document 1 discloses a configuration comprising a lower mass supported on a structure via a first laminated rubber bearing, an upper mass supported on the lower mass via a second laminated rubber bearing, a first oil damper provided between the structure and the lower mass, and a second oil damper provided between the lower mass and the upper mass. Patent Document 2 also discloses a configuration including a plurality of vibration-damping columns equipped with laminated rubber bearings as horizontal spring elements, a connecting beam connected to and erected above the laminated rubber bearings of the plurality of vibration-damping columns, a weight installed on the connecting beam, and an oil damper disposed with one end connected to the building and the other end connected to the connecting beam. In the configuration disclosed in Patent Document 2, the oil damper is provided so that one end is connected to a connecting part (steel frame) connected to the connecting beam and the other end is connected to a connecting part (concrete block) formed integrally with the building, and extends between adjacent laminated rubber bearings.

[0003] As in Patent Documents 1 and 2, a laminated rubber bearing as a spring that applies a restoring force to the weight when the weight moves horizontally relative to the building, and an oil damper for damping vibrations may be provided between the building and the weight. In such cases, as in Patent Document 2, for example, a pair of connecting parts are provided between adjacent laminated rubber bearings, fixed to the weight and the building, and an oil damper is disposed between the pair of connecting parts. However, when arranging the oil damper in this manner, it is necessary to provide a connecting portion at a position that does not come into contact with the deformed laminated rubber bearing even when the laminated rubber bearing is deformed by vibration, so a certain distance must be provided between the laminated rubber bearing and the connecting portion. In addition, since the oil damper is provided between the pair of connecting portions, the pair of connecting portions must be separated by the length of the oil damper. For this reason, the distance between adjacent laminated rubber bearings must be greater than the length of the oil damper plus twice the distance between the laminated rubber bearing and the connecting portion. Therefore, the configuration of Patent Document 2 may require a large space to install the tuned mass damper device.

[0004] In response to this, Patent Document 3 discloses a configuration in which a seismic isolation layer is provided between a lower structure and an upper structure, and a damper is installed between the seismic isolation bearings that support the upper structure of the seismic isolation layer, in which the pedestals provided above and below the seismic isolation bearings are formed in a staggered manner, one with the upper pedestal being higher and the other with the lower pedestal being higher, and a damper is installed between the adjacent pedestals with higher heights. In the configuration of Patent Document 3, one of the seismic isolation bearings is provided on a lower base formed with a high height. In addition, the other seismic isolation bearing is provided at a lower position than the other seismic isolation bearing, and the upper base is formed between the other seismic isolation bearing and the superstructure so as to overlap the lower base of the one seismic isolation bearing in the height direction. In this overlapping portion, a damper is provided so as to extend laterally between the lower base of the one seismic isolation bearing and the upper base of the other seismic isolation bearing. If such a configuration is applied to the configuration of Patent Document 2, the base portion of the laminated rubber bearing is used as a connecting portion for connecting the oil damper, so that it is not necessary to provide a connecting portion separately between the adjacent laminated rubber bearings. Therefore, the distance between the adjacent laminated rubber bearings only needs to be secured by the length of the oil damper, and can be made smaller than the cases of Patent Documents 1 and 2. For this reason, it is possible to reduce the space required to install the tuned mass damper device.

[0005] However, in the configuration in which Patent Document 3 is applied to Patent Document 2, when one oil damper is provided between adjacent laminated rubber bearings, the adjacent laminated rubber bearings are provided at different heights so that their bases overlap in the height direction. Therefore, when providing the laminated rubber bearings, the minimum height required is the sum of the height of these two laminated rubber bearings and the height of the overlapping bases. This results in a large height for the tuned mass damper device. This may make it impossible to install the tuned mass damper device inside a building. It is also possible to install the tuned mass damper device on the rooftop of a building, but in that case, the roof, privacy wall, and other enclosures that cover the tuned mass damper device will be larger than necessary. It is desirable to have a tuned mass damper device that can be implemented in a compact configuration, thereby reducing the amount of space required for installation. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2019-112797 A [Patent Document 2] JP 2015-227605 A [Patent Document 3] JP 2007-278340 A Summary of the Invention [Problem to be solved by the invention]

[0007] An object of the present invention is to provide a tuned mass damper device that can be realized with a compact configuration and that can reduce the amount of space required for installation. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention employs the following means. In other words, the tuned mass damper device of the present invention is a tuned mass damper device that is installed on the top of a building and damps vibrations acting on the building, and comprises: a cone that is polygonal in plan view and is arranged to be freely movable horizontally relative to the building, a plurality of first laminated rubber bearings that are arranged below the vertices of the polygon and support the cone, a plurality of first oil dampers that are arranged to extend on lines connecting the centre of the polygonal shape and the vertices when viewed in plan, and a first damper mounting member that is arranged below the position of the centre of the cone and is immovable relative to the underside of the first laminated rubber bearings, and each of the first oil dampers has one end connected to the first damper mounting member and the other end connected to the cone. According to the above-mentioned configuration, when the building vibrates due to an earthquake, strong wind, or the like, the weight tries to move horizontally relative to the building due to inertial force in response to the vibration of the building. The weight has a polygonal shape when viewed in a plan view, and is supported in a well-balanced manner by a plurality of first laminated rubber bearings provided below the vertices of the polygonal shape. When such a weight moves horizontally relative to the building, the first laminated rubber bearing deforms to allow the weight to move relative to the building, and then the restoring force of the first laminated rubber bearing acts on the weight as a force in a direction returning it to its original position. In this way, the weight vibrates horizontally. Such vibration is damped by a plurality of first oil dampers, one end of which is connected to the weight and the other end of the first damper mounting member provided on the underside of the first laminated rubber bearing so as not to move relative to the weight. Here, in plan view, the first damper mounting member to which one end of the first oil damper is connected is provided below the central position forming the polygonal shape of the cone. Also, in plan view, the first oil damper is arranged so as to extend on a line connecting the first damper mounting member provided at the central position of the polygonal shape and the vertices of the polygon forming the cone. By providing the first oil damper at a position different from the sides of the polygon in this way, it is possible to arrange the first oil damper even if the distance between the first laminated rubber bearings is short, compared to the conventional case in which a connecting portion is provided between adjacent laminated rubber bearings, i.e., at a position corresponding to the sides of the polygon, and an oil damper is provided between the connecting portions (for example, FIG. 2 of Patent Document 2). This makes it possible to reduce the space required to install the tuned mass damper device. Furthermore, by connecting one end of each of the multiple first oil dampers to a first damper mounting member provided at the center of the weight, the connection targets of the multiple first oil dampers can be consolidated into one member. In other words, there is no need to provide a mounting member for each of the multiple first oil dampers, resulting in a simpler configuration. Furthermore, as already explained, since the first oil damper is not provided between adjacent first laminated rubber bearings, there is no need to adjust the height of each of the adjacent first laminated rubber bearings, for example by placing one higher than the other, when installing the first oil damper. Therefore, there is no particular need to increase the height of the space in which the first laminated rubber bearings are provided in order to install the first oil damper. This prevents the height of the tuned mass damper device from becoming too large. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device that can be realized with a compact configuration and that can reduce the amount of space required for installation.

[0009] In one aspect of the present invention, a first protrusion is formed on the underside of the weight where the first laminated rubber bearing is provided, so as to protrude downward toward the first laminated rubber bearing, and the other end of the first oil damper is joined to a side surface of the first protrusion. According to this configuration, each of the multiple first oil dampers has one end joined to the first damper mounting member, and the other end joined to a side surface of the first protruding portion that protrudes downward from a portion of the underside of the weight where the first laminated rubber bearing is provided. This gives the first protruding portion both a function of being joined to the first laminated rubber bearing and a function of having the other end of the first oil damper joined thereto. Furthermore, the multiple first oil dampers are accommodated inside the first protruding portion, which allows the first oil dampers to be accommodated neatly. The above-mentioned effects are multiplied, and the structure of the tuned mass damper device can be made more compact.

[0010] In one aspect of the present invention, the undersides of the multiple first laminated rubber bearings are fixed on a connecting frame arranged to connect the multiple first laminated rubber bearings laterally, the first damper mounting member is fixed to the connecting frame so as to protrude upward from the connecting frame, and the system further comprises a multiple number of second laminated rubber bearings, each of which is provided below the connecting frame at a position corresponding to each of the multiple first laminated rubber bearings, with an upper end fixed to the connecting frame and a lower end fixed to the building; a second damper mounting member fixed to the connecting frame so as to protrude downward from the connecting frame; and a multiple number of second oil dampers, each of which is connected at one end to the second damper mounting member and at the other end to the building. According to this configuration, when the building vibrates due to an earthquake, strong wind, or the like, the weight tries to move horizontally relative to the building due to inertial force in response to the vibration of the building. This relative movement is permitted by the deformation of the first laminated rubber bearing, and is transmitted as a horizontal force to the connecting frame to which the lower side of the first laminated rubber bearing is fixed, via the first laminated rubber bearing connected to the weight. The connecting frame is supported in a well-balanced manner by a plurality of second laminated rubber bearings provided at positions corresponding to each of the plurality of first laminated rubber bearings. When a horizontal force is transmitted to such a connecting frame as described above, the connecting frame tries to move horizontally relative to the building. This relative movement is permitted by the deformation of the second laminated rubber bearing. After that, the restoring forces of the second laminated rubber bearing and the first laminated rubber bearing act on the connecting frame and the weight as a force in a direction returning them to their original positions. In this way, the weight vibrates horizontally via the connecting frame. Here, the multiple second oil dampers protrude downward from the connecting frame, and one end and the other end are connected to the building and to a second damper mounting member fixed to the connecting frame. The above-mentioned vibrations are damped by both the multiple second oil dampers and the multiple first oil dampers. In this way, by providing the first and second laminated rubber bearings in two tiers, one above the other, the laminated rubber bearings are configured in two tiers, making it possible to tolerate large deformation even when small diameter first and second laminated rubber bearings are used. This makes it possible to accommodate large relative movement of the weight with respect to the building, and also reduces the cost required for the entire tuned mass damper device. Furthermore, one end of each of the second oil dampers is connected to a second damper mounting member that is provided so as to protrude downward from the connecting frame, so that the connection targets of the second oil dampers can be consolidated into one member. In other words, there is no need to provide a mounting member for each of the second oil dampers, making it possible to achieve a simpler configuration. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device that can be realized with a compact configuration and that can reduce the amount of space required for installation.

[0011] Moreover, the present invention provides a tuned mass damper device that is installed on the top of a building and damps vibrations acting on the building, comprising: a cone having a polygonal shape in plan view that is arranged to be freely movable horizontally relative to the building; a plurality of first laminated rubber bearings that are arranged below the vertices of the polygonal shape and support the cone; a plurality of first oil dampers that are arranged to extend on lines connecting the centre of the polygonal shape and the vertices when viewed in plan; and a first damper mounting member fixed to the underside of the cone at the position of the central part, wherein one end of the plurality of first oil dampers is connected to the first damper mounting member and the other end is connected to a base to which the underside of the first laminated rubber bearings is fixed. According to the above-mentioned configuration, when the building vibrates due to an earthquake, strong wind, or the like, the weight tries to move horizontally relative to the building due to inertial force in response to the vibration of the building. The weight has a polygonal shape when viewed in a plan view, and is supported in a well-balanced manner by a plurality of first laminated rubber bearings provided below the vertices of the polygonal shape. When such a weight moves horizontally relative to the building, the first laminated rubber bearing deforms to allow the weight to move relative to the building, and then the restoring force of the first laminated rubber bearing acts on the weight as a force in the direction of returning it to its original position. In this way, the weight vibrates horizontally. Such vibration is damped by a plurality of first oil dampers, one end of which is connected to a first damper mounting member provided so as not to move relative to the upper side of the first laminated rubber bearing, and a base to which the lower side of the first laminated rubber bearing is fixed. Here, the first damper mounting member to which one end of the first oil damper is connected is provided on the underside at the center of the polygonal shape of the cone when viewed in plan. Also, the first oil damper is arranged so as to extend on a line connecting the first damper mounting member provided at the center of the polygonal shape and the vertices of the polygon forming the cone when viewed in plan. By installing the first oil damper at a position different from the sides of the polygon in this way, it is possible to arrange the first oil damper even when the distance between the first laminated rubber bearings is short, compared to the conventional case in which a connecting portion is provided between adjacent laminated rubber bearings, i.e., at a position corresponding to the sides of the polygon, and an oil damper is provided between the connecting portions (for example, FIG. 2 of Patent Document 2). This makes it possible to reduce the space required to install the tuned mass damper device. Furthermore, by connecting one end of each of the multiple first oil dampers to a first damper mounting member provided at the center of the weight, the connection targets of the multiple first oil dampers can be consolidated into one member. In other words, there is no need to provide a mounting member for each of the multiple first oil dampers, resulting in a simpler configuration. Furthermore, as already explained, since the first oil damper is not provided between adjacent first laminated rubber bearings, there is no need to adjust the height of each of the adjacent first laminated rubber bearings, for example by placing one higher than the other, when installing the first oil damper. Therefore, there is no particular need to increase the height of the space in which the first laminated rubber bearings are provided in order to install the first oil damper. This prevents the height of the tuned mass damper device from becoming too large. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device that can be realized with a compact configuration and that can reduce the amount of space required for installation. Effect of the Invention

[0012] According to the present invention, it is possible to provide a tuned mass damper device that can be realized with a compact configuration and that can reduce the amount of space required for installation. [Brief description of the drawings]

[0013] [Figure 1] 1A and 1B are schematic plan and front views showing the configuration of a tuned mass damper device according to a first embodiment of the present invention; [Diagram 2] 2 is a cross-sectional view of the portion viewed from the arrow II in FIG. 1. [Diagram 3] 2 is a cross-sectional view taken along the line II-II of FIG. 1. [Figure 4] FIG. 3 is a cross-sectional view taken along the line III-III in FIG. [Diagram 5] 5A and 5B are a schematic plan view and a front view showing a configuration of a modified example of the first embodiment. [Figure 6] FIG. 6 is a front view showing the configuration of a tuned mass damper device according to a second embodiment of the present invention. [Figure 7] FIG. 11 is a front view showing a configuration of a modified example of the second embodiment. [Figure 8] 11A and 11B are a plan view and a front view of a tuned mass damper device according to another modified example of the above embodiments and the modified examples. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] The present invention is a tuned mass damper device that is installed on the top of a building and damps vibrations acting on the building, and is composed of a cone having a polygonal shape (e.g., a rectangular shape) in a plan view, a plurality of first laminated rubber bearings supporting the vertices of the cone that form the polygonal shape, and a first oil damper positioned on a line between the first damper mounting member provided in the center of the cone and the first laminated rubber bearings (e.g., on a diagonal in the case of a rectangular cone). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a tuned mass damper device according to the present invention will be described with reference to the accompanying drawings. [First embodiment] Fig. 1 shows a schematic plan view and a front view illustrating the configuration of a tuned mass damper device according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view taken along the line II in Fig. 1. Fig. 3 is a cross-sectional view taken along the line II-II in Fig. 1. Fig. 4 is a cross-sectional view taken along the line III-III in Fig. 1. The tuned mass damper device 1A is provided, for example, on the top of a mid-rise or high-rise building 100. The tuned mass damper device 1A may be provided on a slab 100a constituting the roof of the building 100. Alternatively, the tuned mass damper device 1A may be provided on a story located at the top of the building 100, for example, indoors on the top floor below the roof, on the slab 100a constituting the top floor. When vibrations occur in the building due to an earthquake, strong winds, or the like, the tuned mass damper device 1A reduces the vibrations by applying a force to the building that suppresses the vibrations of the building by vibrating a weight provided to be movable relative to the building with a period tuned to the period of the vibrations of the building. The tuned mass damper device 1A comprises a weight 2, a connecting frame 3, a plurality of first laminated rubber bearings 4, a plurality of first oil dampers 5, a plurality of second laminated rubber bearings 6, and a plurality of second oil dampers 7.

[0015] The weight 2 is provided at the top of the tuned mass damper device 1 A. The weight 2 is provided above a slab 100 a of a building 100 and spaced apart from the slab 100 a. The weight 2 is mounted on a slab 100a of the building 100 via a plurality of first laminated rubber bearings 4 and a plurality of second laminated rubber bearings 6, and is thus provided so as to be movable horizontally relative to the building 100. The mass of the weight 2 is set so as to effectively damp vibrations acting on the building 100 when an earthquake occurs. The weight 2 is formed so as to have a mass that is, for example, about 1 / 100 of the total weight of the building 100. 2, the cone 2 has a polygonal shape in a plan view. In this embodiment, the cone 2 has a rectangular shape in a plan view, and has vertices 2p at its four corners. The shape of the cone 2 is not limited to a rectangular shape, and may have a number of vertices 2p other than four. The cone 2 may be made of metal, concrete, or the like, and may be a hollow container filled with a liquid such as water.

[0016] The weight 2 integrally comprises a main body 21 having a predetermined thickness in the vertical direction, first protrusions 22 provided at the four corners of the main body 21, i.e., at the vertices 2p, and a wall portion 23. As shown in FIG. 1, each of the first protrusions 22 is provided so as to protrude downward from the lower surface 21b of the main body 21 of the weight 2 at the portion of the apex 2p. The wall portion 23 is provided to protrude downward from the lower surface 21b of the main body 21 of the weight 2 in a portion that forms a side of the quadrangle between adjacent vertices 2p. The wall portion 23 connects adjacent first protrusions 22. The wall portion 23 is formed so that the lower surface of the wall portion 23 is at the same height as the lower surfaces of the first protrusions 22. In this manner, below the weight 2, a space S is formed which is surrounded above and laterally by the lower surface 21b of the main body 21, the first protruding portion 22, and the wall portion .

[0017] The connecting pedestal 3 is provided below the weight body 2 with a gap therebetween. As shown in FIG. 3, the connecting pedestal 3 is integrally provided with a plurality of intermediate supports 31, a connection member 32, and an attachment member support portion 33. The connecting pedestal 3 is formed so that its outer shape in plan view is generally the same as that of the weight body 2. In this embodiment, the connecting pedestal 3 is rectangular in plan view. In this embodiment, the weight body 2 and the connecting pedestal 3 are positioned so that the central portion 3c of the connecting pedestal 3 is in the same position as the central portion 2c of the weight body 2 in plan view. The intermediate supports 31 are provided at the four corners of the connecting frame 3. Each intermediate support 31 is provided vertically below the first protruding portion 22 at a distance from the first protruding portion 22. Each intermediate support 31 is made of, for example, concrete or metal. The connecting members 32 connect the intermediate supports 31 at the four corners. The connecting members 32 have a pair of first connecting members 32A that connect adjacent intermediate supports 31 in a first direction in the horizontal plane, and a pair of second connecting members 32B that connect adjacent intermediate supports 31 in a second direction that intersects with the first direction in the horizontal plane. The mounting member support part 33 is provided to support a first damper mounting member 8A and a second damper mounting member 9A described below. The mounting member support part 33 includes two support members 33A and 33B. When the connecting frame 3 is viewed in plan, the two support members 33A and 33B connect the intermediate support bases 31 located on diagonal corners of a quadrangle and are provided so as to intersect in an X-shape at the center 3c of the connecting frame 3. The connection member 32 and the mounting member support portion 33 are made of, for example, H-beam.

[0018] 1 and 2, the multiple first laminated rubber bearings 4 are provided below vertices 2p that form the polygonal weight body 2. The multiple first laminated rubber bearings 4 are provided below the vertices 2p at the four corners of the weight body 2. That is, in this embodiment, four first laminated rubber bearings 4 are provided. Each of the multiple first laminated rubber bearings 4 is provided between a first protruding portion 22 provided so as to protrude downward from the lower surface 21b of the weight body 2 and the intermediate support base 31 of the connecting frame 3.

[0019] Each first laminated rubber bearing 4 includes a lower flange plate 41, an upper flange plate 42, and a laminated rubber portion 43. The lower flange plate 41 is provided on the underside of the first laminated rubber bearing 4. The lower flange plate 41 is fixed to the upper surface of the intermediate support base 31 with bolts or the like. The upper flange plate 42 is provided on the upper side of the first laminated rubber bearing 4. The upper flange plate 42 is fixed to the underside of the first protruding portion 22 with bolts or the like. In this way, each first laminated rubber bearing 4 is provided with its upper end fixed to the weight body 2 and its lower end fixed to the connecting frame 3. The laminated rubber portion 43 is formed by laminating metal plates and viscoelastic layers (rubber layers) alternately in the vertical direction. Each of the first laminated rubber bearings 4 is connected laterally by the connecting frame 3 by fixing the lower flange plate 41 on the lower side to the connecting frame 3. The first laminated rubber bearings 4 support the weight 2 from below. The weight 2 is movable horizontally relative to the connecting frame 3 via the first laminated rubber bearings 4. The first laminated rubber bearings 4 attenuate the horizontal relative displacement between the intermediate support 31, i.e., the lower flange plate 41 that displaces integrally with the connecting frame 3, and the upper flange plate 42 that displaces integrally with the weight 2 having the first protrusion 22, by the laminated rubber part 43. When the weight 2 moves horizontally relative to the connecting frame 3, the viscoelastic layer of the laminated rubber part 43 of the first laminated rubber bearing 4 elastically deforms, and the restoring force of the viscoelastic layer applies a force to the weight 2 in a direction returning it to its original position.

[0020] The second laminated rubber bearings 6 are provided below the connecting frame 3 at positions corresponding to the first laminated rubber bearings 4. The second laminated rubber bearings 6 are provided directly below the first laminated rubber bearings 4. The second laminated rubber bearings 6 are provided below the vertices 2p that form the polygonal cone body 2. That is, in this embodiment, four second laminated rubber bearings 6 are provided. Each of the second laminated rubber bearings 6 is provided between the intermediate support 31 of the connecting frame 3 and a second protruding portion 102 formed to protrude upward from the slab 100a of the building 100 toward the second laminated rubber bearing 6.

[0021] Each second laminated rubber bearing 6 includes a lower flange plate 61, an upper flange plate 62, and a laminated rubber portion 63. The lower flange plate 61 is provided on the underside of the second laminated rubber bearing 6. The lower flange plate 61 is fixed to the upper surface of the second protruding portion 102 with bolts or the like. The upper flange plate 62 is provided on the upper side of the second laminated rubber bearing 6. The upper flange plate 62 is fixed to the lower surface of the intermediate support base 31 with bolts or the like. In this way, each second laminated rubber bearing 6 is provided with its upper end fixed to the connecting frame 3 and its lower end fixed to the building 100. The laminated rubber portion 63 is formed by laminating metal plates and viscoelastic layers alternately in the vertical direction. Each of the second laminated rubber bearings 6 is connected laterally by the connecting frame 3 by fixing the upper flange plate 62 on the upper side to the connecting frame 3. The second laminated rubber bearings 6 support the connecting frame 3 and the weight body 2 from below. The connecting frame 3 is movable horizontally relative to the building 100 via the second laminated rubber bearings 6. The second laminated rubber bearing 6 attenuates the horizontal relative displacement between the second protrusion 102, i.e., the lower flange plate 61 that displaces integrally with the building 100, and the upper flange plate 62 that displaces integrally with the connecting frame 3 having the intermediate support 31, by the laminated rubber part 63. When the connecting frame 3 moves horizontally relative to the building 100, the viscoelastic layer of the laminated rubber part 63 of the second laminated rubber bearing 6 elastically deforms, and the restoring force of the viscoelastic layer applies a force to the connecting frame 3 in a direction returning to the original position.

[0022] In this embodiment, the connection frame 3 is provided with a first damper mounting member 8A and a second damper mounting member 9A. As shown in FIG. 2, the first damper mounting member 8A is provided at the position of the center 2c of the weight body 2, that is, at the position of the center 3c of the connecting frame 3, when viewed from above. The first damper mounting member 8A is provided below the position of the center 2c of the weight body 2. The first damper mounting member 8A is fixed to the connecting frame 3 so as to protrude upward from the connecting frame 3. The first damper mounting member 8A is provided at the center 3c of the connecting frame 3 so as to protrude upward from a portion where the two support members 33A and 33B constituting the mounting member support part 33 intersect. The first damper mounting member 8A is fixed to the connecting frame 3 so as to be immovable relative to the lower flange plate 41 on the lower side of the first laminated rubber bearing 4.

[0023] The second damper mounting member 9A is fixed to the connecting frame 3 so as to protrude downward from the connecting frame 3. As shown in FIG. 3, in this embodiment, the second damper mounting member 9A is provided at the position of the center 2c of the weight body 2, that is, at the position of the center 3c of the connecting frame 3, when viewed in a plan view. In other words, the first damper mounting member 8A and the second damper mounting member 9A are provided at positions where they overlap when viewed in a plan view. The second damper mounting member 9A is provided at the center 3c of the connecting frame 3 so as to protrude downward from a portion where the two support members 33A and 33B constituting the mounting member support part 33 intersect. The second damper mounting member 9A is fixed to the connecting frame 3 so as to be immovable relative to the upper flange plate 62 on the upper side of the second laminated rubber bearing 6. 2 and 3, the first damper mounting member 8A and the second damper mounting member 9A are formed to have a rectangular shape in a plan view. The first damper mounting member 8A and the second damper mounting member 9A are provided so that their side surfaces 8s, 9s face the apexes 2p of the four corners of the weight body 2 in a plan view.

[0024] As shown in Fig. 1 and Fig. 2, the multiple first oil dampers 5 are provided between the cone 2 and the connecting frame 3. As shown in Fig. 2, the multiple first oil dampers 5 are arranged so as to extend on a line connecting the central portion 2c of the polygonal cone 2 and the vertices 2p when viewed in a plane. In this embodiment, for example, two multiple first oil dampers 5 are provided. The two first oil dampers 5 are arranged so as to extend on a line connecting the central portion 2c of the polygonal cone 2 and each of the adjacent vertices 2p1 and 2p2 drawn on the upper side in Fig. 2 among the vertices 2p at the four corners when viewed in a plane.

[0025] One end 5a of each first oil damper 5 is connected to a side surface 8s of the first damper mounting member 8A. One end 5a of each first oil damper 5 is connected to the side surface 8s of the first damper mounting member 8A via a pin 5p so as to be rotatable within a horizontal plane. The other end 5b of each first oil damper 5 is connected to the weight 2. In this embodiment, the other end 5b of each first oil damper 5 is joined to a side surface 22s formed to face the central portion 2c of the first protruding portion 22. The other end 5b of each first oil damper 5 is connected to the side surface 22s of the first protruding portion 22 via a pin 5q so as to be rotatable within a horizontal plane. In this manner, the first oil damper 5 is provided inside the space S formed below the weight body 2 . The first oil damper 5 expands and contracts along its extending direction, thereby damping the relative displacement energy between the first damper mounting member 8A (connecting frame 3) to which one end 5a is connected, and the weight 2 to which the other end 5b is connected.

[0026] As shown in FIG. 1, the second oil dampers 7 are provided between the connecting frame 3 and the building 100. As shown in FIG. 4, the second oil dampers 7 are arranged so as to extend on a line connecting the central portion 2c of the weight body 2 and the apex 2p in a plan view. In this embodiment, for example, two second oil dampers 7 are provided. The two second oil dampers 7 are provided at positions that do not overlap with the first oil dampers 5 in a plan view. The two second oil dampers 7 are provided at positions on the opposite side of the two first oil dampers 5 across the second damper mounting member 9A provided at the central portion 3c of the connecting frame 3 in a plan view. When viewed in a plan view, the two second oil dampers 7 are arranged so as to extend on lines connecting the second damper mounting member 9A provided in the central portion 3c of the connecting frame 3 and each of the second protrusions 102C, 102D provided at positions corresponding to adjacent vertices 2p3, 2p4, which are depicted on the lower side of Figure 2, among the four corner vertices 2p of the weight body 2. In this way, the first oil damper 5 and the second oil damper 7 are arranged as a whole to extend radially outward from the center 3c of the connecting frame 3, at a predetermined angle in the circumferential direction.

[0027] One end 7a of each second oil damper 7 is connected to a side surface 9s of a second damper mounting member 9A provided in the center portion 3c of the connecting frame 3. One end 7a of each second oil damper 7 is connected to the side surface 9s of the second damper mounting member 9A via a pin 7p so as to be rotatable within a horizontal plane. The other end 7b of each second oil damper 7 is connected to second protruding portions 102C, 102D provided on the building 100. In this embodiment, the other end 7b of each second oil damper 7 is joined to a side surface 102s formed to face the second damper mounting member 9A at the second protruding portions 102C, 102D. The other end 7b of each second oil damper 7 is connected to the side surface 102s of the second protruding portion 102 via a pin 7q so as to be rotatable within a horizontal plane. The second oil damper 7 expands and contracts along its extension direction, thereby damping the relative displacement energy between the second damper mounting member 9A (connecting frame 3) to which one end 7a is connected, and the building 100 to which the other end 7b is connected.

[0028] In the above-described configuration, when the building vibrates due to an earthquake, strong wind, or the like, the inertial force that tries to keep weight 2 in place causes weight 2 to move horizontally relative to building 100. This relative movement is permitted by the deformation of first laminated rubber bearing 4, but is transmitted as a horizontal force via first laminated rubber bearing 4 connected to weight 2 to connecting frame 3 to which the underside of first laminated rubber bearing 4 is fixed. When a horizontal force is transmitted to the connecting frame 3 as described above, the connecting frame 3 tries to move horizontally relative to the building 100. This relative movement is permitted by the deformation of the second laminated rubber bearing 6. Thereafter, the restoring forces of the second laminated rubber bearing 6 and the first laminated rubber bearing 4 act on the connecting frame 3 and the weight 2 as forces in a direction returning them to their original positions. In this way, the weight 2 vibrates in the horizontal direction via the connecting frame 3. Such vibrations are damped by the first oil damper 5 and the second oil damper 7.

[0029] The tuned mass damper device 1A as described above is installed on the top of a building 100 and damps vibrations acting on the building 100. The tuned mass damper device 1A comprises a cone 2 having a polygonal shape in a plan view and arranged to be movable horizontally relative to the building 100, a plurality of first laminated rubber bearings 4 arranged below an apex 2p forming the polygonal shape (of the cone 2) and supporting the cone 2, a plurality of first oil dampers 5 arranged to extend on a line connecting a central part 2c of the polygonal shape (of the cone 2) and the apex 2p when viewed in a plan view, and a first damper mounting member 8A arranged below the position of the central part 2c of the cone 2 so as to be immovable relative to the underside of the first laminated rubber bearing 4, and one end 5a of the plurality of first oil dampers 5 is connected to the first damper mounting member 8A and the other end 5b is connected to the cone 2. According to the above-mentioned configuration, when the building 100 vibrates due to an earthquake, strong wind, or the like, the weight 2 tends to move horizontally relative to the building 100 due to inertial force in association with the vibration of the building 100. The weight 2 has a polygonal shape when viewed in a plan view, and is supported in a well-balanced manner by a plurality of first laminated rubber bearings 4 provided below the vertices 2p forming the polygonal weight 2. When such a weight 2 moves horizontally relative to the building 100, the first laminated rubber bearings 4 deform to allow the weight 2 to move relative to the building 100, and then the restoring force of the first laminated rubber bearings 4 acts on the weight 2 as a force in the direction of returning it to its original position. In this way, the weight 2 vibrates horizontally. Such vibration is damped by a plurality of first oil dampers 5, one end 5a and the other end 5b of which are connected to the weight 2 and the first damper mounting member 8A provided on the underside of the first laminated rubber bearing 4 so as not to move relative to it. Here, in plan view, the first damper mounting member 8A to which one end 5a of the first oil damper 5 is connected is provided below the position of the central part 2c forming the polygonal shape of the cone body 2. Also, in plan view, the first oil damper 5 is arranged so as to extend on a line connecting the first damper mounting member 8A provided at the position of the central part 2c of the polygonal shape and the vertices 2p of the polygon forming the cone body 2. By providing the first oil damper 5 at a position different from the sides of the polygon in this way, it is possible to provide the first oil damper 5 even when the distance between the first laminated rubber bearings 4 is short, compared to the conventional case in which a connecting part is provided between adjacent laminated rubber bearings, i.e., at a position corresponding to the sides of the polygon, and an oil damper is provided between the connecting parts. This makes it possible to reduce the space required to install the tuned mass damper device 1A. Furthermore, one end 5a of each of the multiple first oil dampers 5 is connected to a first damper mounting member 8A provided at the center 2c of the weight body 2, so that the connection targets of the multiple first oil dampers 5 can be consolidated into one member. In other words, there is no need to provide a mounting member for each of the multiple first oil dampers 5, making it possible to achieve a simpler configuration. Furthermore, as already explained, the first oil damper 5 is not provided between adjacent first laminated rubber bearings 4, so when installing the first oil damper 5, there is no need to adjust the height of each of the adjacent first laminated rubber bearings 4, for example by placing one higher than the other. Therefore, there is no particular need to increase the height of the space in which the first laminated rubber bearings 4 are provided in order to install the first oil damper 5. This prevents the height of the tuned mass damper device 1A from becoming too large. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device 1A that can be realized with a compact configuration and that can reduce the amount of space required for installation.

[0030] In addition, a first protrusion 22 is formed on the lower surface 21b of the weight 2 at the portion where the first laminated rubber bearing 4 is provided, so as to protrude downward toward the first laminated rubber bearing 4, and the other end 5b of the first oil damper 5 is joined to the side surface 22s of the first protrusion 22. According to this configuration, each of the multiple first oil dampers 5, one end 5a of which is joined to the first damper mounting member 8A, has the other end 5b joined to the side surface 22s of the first protruding portion 22 that protrudes downward from the portion of the lower surface 21b of the weight 2, where the first laminated rubber bearing 4 is provided. As a result, the first protruding portion 22 has both a function of being joined to the first laminated rubber bearing 4 and a function of having the other end 5b of the first oil damper 5 joined thereto. Furthermore, the multiple first oil dampers 5 are housed inside the first protruding portion 22, and the first oil dampers 5 can be housed well. The above-mentioned effects are multiplied, and the configuration of the tuned mass damper device 1A can be made more compact.

[0031] In addition, the undersides of the multiple first laminated rubber bearings 4 are fixed onto a connecting frame 3 that is arranged to connect the multiple first laminated rubber bearings 4 laterally, and the first damper mounting member 8A is fixed to the connecting frame 3 so as to protrude upward from the connecting frame 3. The system further includes a multiple number of second laminated rubber bearings 6 that are provided below the connecting frame 3 at positions corresponding to each of the multiple first laminated rubber bearings 4, with their upper ends fixed to the connecting frame 3 and their lower ends fixed to the building 100; a second damper mounting member 9A fixed to the connecting frame 3 so as to protrude downward from the connecting frame 3; and a multiple number of second oil dampers 7 that have one end 7a connected to the second damper mounting member 9A and the other end 7b connected to the building 100. According to this configuration, when the building 100 vibrates due to an earthquake, strong wind, or the like, the weight 2 tends to move horizontally relative to the building 100 due to inertial force in response to the vibration of the building 100. This relative movement is permitted by the deformation of the first laminated rubber bearing 4, and is transmitted as a horizontal force to the connecting frame 3 to which the lower side of the first laminated rubber bearing 4 is fixed, via the first laminated rubber bearing 4 connected to the weight 2. The connecting frame 3 is supported in a well-balanced manner by a plurality of second laminated rubber bearings 6 provided at positions corresponding to each of the plurality of first laminated rubber bearings 4. When a horizontal force is transmitted to such a connecting frame 3 as described above, the connecting frame 3 tends to move horizontally relative to the building 100. This relative movement is permitted by the deformation of the second laminated rubber bearing 6. After that, the restoring forces of the second laminated rubber bearing 6 and the first laminated rubber bearing 4 act on the connecting frame 3 and the weight 2 as a force in a direction returning them to their original positions. In this way, the weight 2 vibrates in the horizontal direction via the connecting frame 3. Here, a plurality of second oil dampers 7 protrude downward from the connecting frame 3, and are provided with one end 7a and the other end 7b connected to a second damper mounting member 9A fixed to the connecting frame 3 and to the building 100. The above-mentioned vibrations are damped by both the plurality of second oil dampers 7 and the plurality of first oil dampers 5. In this way, by providing the first laminated rubber bearing 4 and the second laminated rubber bearing 6 in two tiers, one above the other, the laminated rubber bearing is configured in two tiers, which makes it possible to tolerate large deformation even when small diameters are used for the first laminated rubber bearing 4 and the second laminated rubber bearing 6. This makes it possible to accommodate even large relative movements of the building 100, and also reduces the cost required for the entire tuned mass damper device 1A. Furthermore, one end 7a of each of the multiple second oil dampers 7 is connected to a second damper mounting member 9A that is provided so as to protrude downward from the connecting frame 3, so that the connection targets of the multiple second oil dampers 7 can be consolidated into one member. In other words, since there is no need to provide a mounting member for each of the multiple second oil dampers 7, a simpler configuration can be achieved. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device 1A that can be realized with a compact configuration and that can reduce the amount of space required for installation.

[0032] In addition, in the portion of the building 100 where the second laminated rubber bearing 6 is provided, a second protrusion 102 is formed so as to protrude upward toward the second laminated rubber bearing 6, and the other end 7b of the second oil damper 7 is joined to the side surface 102s of the second protrusion 102. According to the above-mentioned configuration, the tuned mass damper device 1A can be appropriately realized.

[0033] [Modification of the first embodiment] The tuned mass damper device of the present invention is not limited to the above-described embodiment explained with reference to the drawings, and various modifications are possible within the technical scope of the present invention. For example, in the above embodiment, the second damper mounting member 9A to which the one end 7a of the second oil damper 7 is connected is provided on the connection frame 3, but this is not limiting. FIG. 5 is a schematic plan view and a front view showing the configuration of a modified example of the tuned mass damper device according to the first embodiment of the present invention. This modified example differs from the first embodiment in that the second damper mounting member 9B is fixed to the building 100, rather than being provided on the connection frame 3B.

[0034] As shown in FIG. 5, in a tuned mass damper device 1B in this modified example, a first damper mounting member 8A is provided on a connecting frame 3B, similarly to the first embodiment. The first damper mounting member 8A is provided below the position of the center portion 2c of the weight body 2 in a plan view. The first damper mounting member 8A is fixed to the connecting frame 3B so as to protrude upward from the connecting frame 3B. The first damper mounting member 8A is provided so as to be immovable relative to the lower flange plate 41 on the lower side of the first laminated rubber bearing 4. In this modification, laminated rubber bearing mounting parts 37 to which the upper side of the second laminated rubber bearing 6 is attached are provided at the four corners of the connecting frame 3B so as to protrude downward from the connecting frame 3B. The laminated rubber bearing mounting parts 37 are provided in the portion where the second laminated rubber bearing 6 is provided.

[0035] In this modified example, the second damper mounting member 9B is fixed to the building 100 so as to protrude upward from the slab 100a of the building 100. In this embodiment, the second damper mounting member 9B is provided at the position of the center 2c of the weight body 2 in a plan view. In other words, the first damper mounting member 8A and the second damper mounting member 9B are provided at positions where they overlap in a plan view.

[0036] The multiple second oil dampers 7 are provided between the connecting frame 3B and the building 100. When viewed in plan, each second oil damper 7 is disposed so as to extend on a line connecting a second damper mounting member 9B provided on the slab 100a of the building 100 and laminated rubber bearing mounting parts 37 provided on the connecting frame 3B on all four sides of the second damper mounting member 9B. One end 7 a of each second oil damper 7 is connected to a side surface of a second damper mounting member 9 B provided on a slab 100 a of the building 100 . The other end 7b of each second oil damper 7 is joined to a side surface 37s of the laminated rubber bearing mounting portion 37 provided on the connecting frame 3B. The second oil damper 7 expands and contracts along its extending direction, thereby attenuating the relative displacement energy between the building 100 to which one end 7a is connected and the connecting frame 3B to which the other end 7b is connected.

[0037] According to the above-mentioned configuration, the lower sides of the plurality of first laminated rubber bearings 4 are fixed onto the connecting frame 3B that is provided so as to connect the plurality of first laminated rubber bearings 4 in the horizontal direction, the first damper mounting member 8A is provided so as to be fixed to the connecting frame 3B so as to protrude upward from the connecting frame 3B, and the plurality of second laminated rubber bearings 6 are provided below the connecting frame 3B at positions corresponding to each of the plurality of first laminated rubber bearings 4, with their upper ends fixed to the connecting frame 3B and their lower ends fixed to the building 100. 00, and a plurality of second oil dampers 7, one end 7a of which is connected to the second damper mounting member 9B and the other end 7b of which is connected to the connecting frame 3B. A laminated rubber bearing mounting portion 37 is formed in the portion of the connecting frame 3B where the second laminated rubber bearing 6 is provided, so as to protrude downward toward the second laminated rubber bearing 6, and the other end 7b of the second oil damper 7 is joined to the side surface 37s of the laminated rubber bearing mounting portion 37. It goes without saying that this modified example provides the same effects as the above embodiment.

[0038] [Second embodiment] Next, a second embodiment of the present invention will be described. In this second embodiment, the description of the parts having the same configuration as the first embodiment will be omitted. FIG. 6 is a front view showing the configuration of a tuned mass damper device according to a second embodiment of the present invention. As shown in FIG. 6, the tuned mass damper device 1C comprises a weight 2C, a connecting frame 3C, a plurality of first laminated rubber bearings 4, a plurality of first oil dampers 5, a plurality of second laminated rubber bearings 6, and a plurality of second oil dampers 7.

[0039] The weight 2C is provided at the top of the tuned mass damper device 1C. The weight 2C of this embodiment has a constant thickness in the vertical direction, and does not include the first protrusion 22 as in the first embodiment. The connecting frame 3C is provided below the weight body 2C with a gap therebetween. The connecting frame 3C integrally includes a plurality of base portions 39A, laminated rubber bearing mounting portions 39B, and a connecting member 32. The connecting frame 3C has an outer shape that is rectangular in a plan view. The bases 39A are provided at the four corners of the connection stand 3 C. The bases 39A are formed relative to the connection member 32 so as to protrude upward. The laminated rubber bearing mounting portions 39B are provided at the four corners of the connecting frame 3 C. The laminated rubber bearing mounting portions 39B are formed relative to the connecting member 32 so as to protrude downward.

[0040] The first laminated rubber bearings 4 are provided below the vertices 2p that form the polygonal cone body 2C. The first laminated rubber bearings 4 are provided below the vertices 2p at the four corners of the cone body 2C. The first laminated rubber bearings 4 are provided between the lower surface of the cone body 2C and the base 39A of the connecting frame 3C. A lower flange plate 41 provided on the lower side of the first laminated rubber bearing 4 is fixed to the upper surface of the base 39A with bolts, etc. An upper flange plate 42 is fixed to the lower surface of the weight body 2C with bolts, etc. The first laminated rubber bearings 4 support the weight 2C from below. The weight 2C is movable horizontally relative to the connecting frame 3C via the first laminated rubber bearings 4. The first laminated rubber bearing 4 damps the horizontal relative displacement between the base 39A, i.e., the lower flange plate 41 that displaces integrally with the connecting frame 3C, and the upper flange plate 42 that displaces integrally with the weight 2C, by means of the laminated rubber portion 43. When the weight 2C moves horizontally relative to the connecting frame 3, the viscoelastic layer of the laminated rubber portion 43 of the first laminated rubber bearing 4 elastically deforms, and the restoring force of the viscoelastic layer applies a force to the weight 2C in a direction returning it to its original position.

[0041] The second laminated rubber bearings 6 are provided below the connecting frame 3C at positions corresponding to the first laminated rubber bearings 4. The second laminated rubber bearings 6 are provided directly below the first laminated rubber bearings 4. The second laminated rubber bearings 6 are provided below the vertices 2p that form the polygonal cone body 2C. Each of the second laminated rubber bearings 6 is provided between the laminated rubber bearing mounting portion 39B of the connecting frame 3C and the slab 100a of the building 100. The lower flange plate 61 provided on the underside of the second laminated rubber bearing 6 is fixed to the slab 100a of the building 100 with bolts or the like. The upper flange plate 62 is fixed to the underside of the laminated rubber bearing mounting portion 39B with bolts or the like. In this way, each second laminated rubber bearing 6 is provided with its upper end fixed to the connecting frame 3C and its lower end fixed to the building 100. The multiple second laminated rubber bearings 6 support the connecting frame 3C and the weight 2C from below. The connecting frame 3C is movable horizontally relative to the building 100 via the multiple second laminated rubber bearings 6. When the connecting frame 3C moves horizontally relative to the building 100, the viscoelastic layer of the laminated rubber part 63 of the second laminated rubber bearing 6 elastically deforms, and the restoring force of the viscoelastic layer applies a force to the connecting frame 3C in a direction returning it to its original position.

[0042] In this embodiment, the first damper mounting member 8C is provided on the underside 21b at the position of the center 2c of the weight 2C in a plan view. The first damper mounting member 8C is fixed to the weight 2C so as to protrude downward from the underside 21b of the weight 2C. By being fixed to the weight 2C, the first damper mounting member 8C is provided so as to be immovable relative to the upper flange plate 42 on the upper side of the first laminated rubber bearing 4. The second damper mounting member 9C is fixed to the building 100 so as to protrude upward from the slab 100a of the building 100. The second damper mounting member 9C is provided at a position corresponding to the center part 2c of the weight body 2C in a plan view. In other words, the first damper mounting member 8C and the second damper mounting member 9C are provided at positions where they overlap in a plan view.

[0043] The multiple first oil dampers 5 are provided between the weight body 2C and the connecting frame 3C. The multiple first oil dampers 5 are arranged so as to extend on a line connecting the central portion 2c and the vertex 2p of the polygonal weight body 2C in a plan view. One end 5a of each first oil damper 5 is connected to a side surface of a first damper mounting member 8C fixed to the weight body 2C. The other end 5b of each first oil damper 5 is connected to a side surface of a base 39A of the connecting frame 3C to which the underside of the first laminated rubber bearing 4 is fixed.

[0044] The second oil dampers 7 are provided between the connecting frame 3C and the building 100. The second oil dampers 7 are arranged so as to extend on a line connecting the second damper mounting member 9C provided at a position corresponding to the center 2c of the weight body 2C and the laminated rubber bearing mounting portion 39B provided at a position corresponding to the apex 2p when viewed in a plan view. One end 7a of each second oil damper 7 is connected to a side surface of the second damper mounting member 9C provided on the slab 100a of the building 100. The other end 7b of each second oil damper 7 is joined to a side surface of the laminated rubber bearing mounting portion 39B provided on the connecting frame 3C.

[0045] The tuned mass damper device 1C as described above is installed on the top of a building 100 and damps vibrations acting on the building 100. The tuned mass damper device 1C comprises a cone 2C having a polygonal shape in a plan view and arranged to be movable horizontally relative to the building 100, a plurality of first laminated rubber bearings 4 arranged below an apex 2p forming the polygonal shape (of the cone 2C) and supporting the cone 2C, a plurality of first oil dampers 5 arranged to extend on a line connecting a central part 2c of the polygonal shape (of the cone 2C) and the apex 2p when viewed in a plan view, and a first damper mounting member 8C provided on an underside 21b of the cone 2C at the position of the central part 2c and fixed to the cone 2C, one end 5a of the plurality of first oil dampers 5 is connected to the first damper mounting member 8C and the other end 5b is connected to a base 39A to which the underside of the first laminated rubber bearing 4 is fixed. According to the above-mentioned configuration, when the building 100 vibrates due to an earthquake, strong wind, or the like, the weight 2C tries to move horizontally relative to the building 100 due to inertial force in association with the vibration of the building 100. The weight 2C has a polygonal shape when viewed in a plan view, and is supported in a well-balanced manner by a plurality of first laminated rubber bearings 4 provided below the vertices 2p forming the polygonal shape. When such a weight 2C moves horizontally relative to the building 100, the first laminated rubber bearings 4 deform to allow the weight 2C to move relative to the building 100, and then the restoring force of the first laminated rubber bearings 4 acts on the weight 2C as a force in the direction returning it to its original position. In this way, the weight 2C vibrates horizontally. Such vibrations are damped by a plurality of first oil dampers 5, each having one end 5a and the other end 5b connected to a first damper mounting member 8C that is mounted so as to be immovable relative to the upper side of the first laminated rubber bearing 4, and to a base 39A to which the lower side of the first laminated rubber bearing 4 is fixed. Here, in plan view, the first damper mounting member 8C to which one end 5a of the first oil damper 5 is connected is provided on the underside 21b at the position of the center 2c forming the polygonal shape of the cone 2C. Also, in plan view, the first oil damper 5 is arranged so as to extend on a line connecting the first damper mounting member 8C provided at the position of the center 2c of the polygonal shape and the vertex 2p of the polygon forming the cone 2C. By installing the first oil damper 5 at a position different from the side of the polygon in this way, it is possible to install the first oil damper 5 even if the distance between the first laminated rubber bearings 4 is short, compared to the conventional case in which a connecting portion is provided between adjacent laminated rubber bearings, i.e., at a position corresponding to the side of the polygon, and an oil damper is provided between the connecting portions. This makes it possible to reduce the space required to install the tuned mass damper device 1C. Furthermore, one end 5a of each of the multiple first oil dampers 5 is connected to a first damper mounting member 8C provided at the position of the central portion 2c that forms the polygonal shape of the weight body 2C, so that the connection targets of the multiple first oil dampers 5 can be consolidated into one member. In other words, since there is no need to provide a mounting member for each of the multiple first oil dampers 5, a simpler configuration can be achieved. Furthermore, as already explained, since the first oil damper 5 is not provided between adjacent first laminated rubber bearings 4, there is no need to adjust the height of each of the adjacent first laminated rubber bearings 4, for example by placing one higher than the other, when installing the first oil damper 5. Therefore, there is no particular need to increase the height of the space in which the first laminated rubber bearings 4 are provided in order to install the first oil damper 5. This prevents the height of the tuned mass damper device 1C from becoming too large. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device 1C that can be realized with a compact configuration and that can reduce the amount of space required for installation.

[0046] In addition, the base 39A to which the lower sides of the multiple first laminated rubber bearings 4 are fixed is provided on a connecting frame 3C that is provided to connect the multiple first laminated rubber bearings 4 in the horizontal direction, and multiple second laminated rubber bearings 6 are provided below the connecting frame 3C at positions corresponding to each of the multiple first laminated rubber bearings 4, with their upper ends fixed to the connecting frame 3C and their lower ends fixed to the building 100, and are provided fixed to the building 100 so as to protrude upward from the building 100. The device further comprises a second damper mounting member 9C and a plurality of second oil dampers 7, each having one end 7a connected to the second damper mounting member 9C and the other end 7b connected to the connecting frame 3C. A laminated rubber bearing mounting portion 39B is formed in the portion of the connecting frame 3C where the second laminated rubber bearing 6 is provided, so as to protrude downwardly toward the second laminated rubber bearing 6, and the other end 7b of the second oil damper 7 is joined to the side of the laminated rubber bearing mounting portion 39B. According to this configuration, when the building 100 vibrates due to an earthquake, strong wind, or the like, the weight 2C tends to move horizontally relative to the building 100 due to inertial force in response to the vibration of the building 100. This relative movement is permitted by the deformation of the first laminated rubber bearing 4, and is transmitted as a horizontal force to the connecting frame 3C to which the lower side of the first laminated rubber bearing 4 is fixed, via the first laminated rubber bearing 4 connected to the weight 2C. The connecting frame 3C is supported in a well-balanced manner by a plurality of second laminated rubber bearings 6 provided at positions corresponding to the respective first laminated rubber bearings 4. When a horizontal force is transmitted to such a connecting frame 3C as described above, the connecting frame 3C tends to move horizontally relative to the building 100. This relative movement is permitted by the deformation of the second laminated rubber bearing 6. After that, the restoring forces of the second laminated rubber bearing 6 and the first laminated rubber bearing 4 act on the connecting frame 3C and the weight 2C as forces in the direction of returning them to their original positions. In this way, the weight 2C vibrates in the horizontal direction via the connecting frame 3C. Here, the multiple second oil dampers 7 are provided with one end 7a and the other end 7b connected to the second damper mounting member 9C that protrudes upward from the building 100 and is fixed to the building 100, and to the laminated rubber bearing mounting part 39B of the connecting frame 3C. The multiple second oil dampers 7 and the multiple first oil dampers 5 both damp the vibrations as described above. In this way, by providing the first laminated rubber bearing 4 and the second laminated rubber bearing 6 in two tiers, one above the other, the laminated rubber bearing is configured in two tiers, which makes it possible to tolerate large deformation even when small diameter first laminated rubber bearings 4 and second laminated rubber bearings 6 are used. This makes it possible to accommodate large relative movement of the weight body 2C with respect to the building 100, and also reduces the cost required for the entire tuned mass damper device 1C. Furthermore, one end 7a of each of the multiple second oil dampers 7 is connected to a second damper mounting member 9C that is provided so as to protrude upward from the building 100, so that the connection targets of the multiple second oil dampers 7 can be consolidated into one member. In other words, since there is no need to provide a mounting member for each of the multiple second oil dampers 7, a simpler configuration can be achieved. The above-mentioned effects are multiplied, making it possible to provide a tuned mass damper device 1C that can be realized with a compact configuration and that can reduce the amount of space required for installation.

[0047] [Modification of the second embodiment] The tuned mass damper device of the present invention is not limited to the above-described embodiment explained with reference to the drawings, and various modifications are possible within the technical scope of the present invention. For example, in the second embodiment, the second damper mounting member 9C to which the one end 7a of the second oil damper 7 is connected is provided on the slab 100a of the building 100, but the present invention is not limited to this. FIG. 7 is a front view showing the configuration of a modified example of the tuned mass damper device according to the second embodiment of the present invention. This modified example differs from the first embodiment in that a second damper mounting member 9D is not provided on the building 100, but is fixed to a connection frame 3D.

[0048] As shown in FIG. 7, in a tuned mass damper device 1D in this modified example, a first damper mounting member 8C is provided on a weight body 2C, similarly to the second embodiment. In this modification, the second damper mounting member 9D is fixed to the connecting frame 3D so as to protrude downward from the connecting frame 3D. In this embodiment, the second damper mounting member 9D is provided at the center 2c of the weight body 2C in plan view. In other words, the first damper mounting member 8C and the second damper mounting member 9D are provided at positions where they overlap in plan view.

[0049] The second oil dampers 7 are provided between the connecting frame 3D and the building 100. When viewed in plan, each second oil damper 7 is disposed so as to extend on a line connecting a second damper mounting member 9D provided on the connecting frame 3D and a second protruding portion 102 provided on a slab 100a of the building 100 on all four sides of the second damper mounting member 9D. One end 7a of each second oil damper 7 is connected to a side surface of a second damper mounting member 9D provided on the connecting frame 3D. The other end 7b of each second oil damper 7 is joined to a side surface of a second protrusion 102 provided on a slab 100a of the building 100. The second oil dampers 7 expand and contract along the extending direction, thereby attenuating the relative displacement energy between the connecting frame 3D to which one end 7a is connected, and the building 100 to which the other end 7b is connected.

[0050] According to the above-mentioned configuration, the lower sides of the multiple first laminated rubber bearings 4 are fixed on a connecting frame 3D that is arranged to connect the multiple first laminated rubber bearings 4 laterally, and the multiple second laminated rubber bearings 6 are arranged below the connecting frame 3D at positions corresponding to each of the multiple first laminated rubber bearings 4, with their upper ends fixed to the connecting frame 3D and their lower ends fixed to the building 100; a second damper mounting member 9D that is fixed to the connecting frame 3D so as to protrude downward from the connecting frame 3D; and a multiple number of second oil dampers 7 that have one end 7a connected to the second damper mounting member 9D and the other end 7b connected to the building 100, and a second protruding portion 102 is formed in the portion of the building 100 where the second laminated rubber bearings 6 are arranged so as to protrude upward toward the second laminated rubber bearing 6, and the other end 7b of the second oil damper 7 is joined to a side surface 102s of the second protruding portion 102. It goes without saying that this modified example provides the same effects as the above embodiment.

[0051] The tuned mass damper device of the present invention is not limited to the above-described embodiments and modifications, which have been described with reference to the drawings, and various other modifications are possible within the technical scope of the present invention. For example, in the first modified example, the first oil damper 5 was arranged so as to extend, in a plan view, on a line connecting the central portion 2c of the polygonal cone 2 and adjacent vertices 2p1, 2p2, which are drawn on the upper side in Fig. 2, of the vertices 2p at the four corners of the cone 2. The second oil damper 7 was arranged so as to extend, in a plan view, on a line connecting the central portion 2c of the polygonal cone 2 and adjacent vertices 2p3, 2p4, which are drawn on the lower side in Fig. 2, of the vertices 2p at the four corners of the cone 2. Instead of such a configuration, for example, a total of four first oil dampers 5 may be arranged so as to extend between the central portion 2c of the polygonal cone 2 and all of the vertices 2p of the cone 2. Also, a total of four second oil dampers 7 may be arranged so as to extend between the central portion 2c of the polygonal cone 2 and all of the vertices 2p of the cone 2. It goes without saying that the same applies to the modified example of the first embodiment, the second embodiment, and the modified example of the second embodiment.

[0052] In addition, in each of the above embodiments and modified examples, the weight 2 is provided above the slab 100a of the building 100 and spaced apart from the slab 100a, and is made of metal, concrete, or a hollow container filled with liquid, but this is not limited to this. FIG. 8 is a plan view and a front view of the tuned mass damper device in this modified example. 8, a part of a slab (e.g., a floor slab) 100b constituting a building may be cut in the vertical direction so as to have a rectangular shape in a plan view, and a part of the cut rectangular prism-shaped slab 100b may be used as the weight 2. In this case, a tuned mass damper device 1E is installed between a lower slab (e.g., a floor slab) 100a and the cut slab 100b located above. In this case, it is preferable to create a gap S1 between the weight 2 and the slab 100b by locating the weight 2 horizontally away from the surrounding slab 100b by the amount of expected relative movement of the weight 2. It is also preferable to install an expansion joint 110 between the surrounding slab 100b and the rectangular parallelepiped slab, i.e., the weight 2, so as to span the gap S1 across the upper surfaces of the weight 2 and the slab 100b. In addition, it is possible to select and discard the configurations given in the above embodiments and modifications, or to change them to other configurations as appropriate. [Explanation of symbols]

[0053] 1A~1E Tuned mass damper device 7a One end 2, 2C Cone 7b Other end 2c Center 8A, 8C First damper mounting member 2p, 2p1~2p4 Vertex 9A~9D Second damper mounting member 3, 3B, 3C, 3D connection frame 21b (weight body) bottom surface 4 First laminated rubber bearing 22 First protrusion 5. First oil damper 22s (first protrusion) side 5a One end 102s (of the second protrusion) side 5b Other end 39A Base 6 Second laminated rubber bearing 100 Building 7 Second oil damper 102, 102C, 102D Second protrusion

Claims

1. A tuned mass damper device installed at the top of a building to damp vibrations acting on the building, comprising: A cone body having a polygonal shape in a plan view, the cone body being provided so as to be movable relative to the building in a horizontal direction; a plurality of first laminated rubber bearings provided below vertices of the polygonal shape and supporting the weight body; a plurality of first oil dampers arranged so as to extend on a line connecting a central portion of the polygonal shape and the vertices when viewed in a plan view; a first damper mounting member provided below the central portion of the weight body so as to be immovable relative to a lower side of the first laminated rubber bearing; Equipped with A tuned mass damper device, characterized in that each of the multiple first oil dampers has one end connected to the first damper mounting member and the other end connected to the weight.

2. a first protruding portion is formed on a lower surface of the weight body at a portion where the first laminated rubber bearing is provided so as to protrude downward toward the first laminated rubber bearing; The other end of the first oil damper is joined to a side surface of the first protruding portion.

2. The tuned mass damper device of claim 1.

3. The lower sides of the first laminated rubber bearings are fixed onto a connecting frame provided so as to connect the first laminated rubber bearings in a lateral direction, The first damper mounting member is fixed to the connecting frame so as to protrude upward from the connecting frame, a plurality of second laminated rubber bearings, each of which is provided below the connecting frame at a position corresponding to each of the plurality of first laminated rubber bearings, and each of which has an upper end fixed to the connecting frame and a lower end fixed to the building; a second damper mounting member fixed to the connecting frame so as to protrude downward from the connecting frame; a plurality of second oil dampers, each having one end connected to the second damper mounting member and the other end connected to the building; 3. The tuned mass damper device of claim 1 or 2, further comprising:

4. A tuned mass damper device installed at the top of a building to damp vibrations acting on the building, comprising: A cone body having a polygonal shape in a plan view, the cone body being provided so as to be movable relative to the building in a horizontal direction; a plurality of first laminated rubber bearings provided below vertices of the polygonal shape and supporting the weight body; a plurality of first oil dampers arranged so as to extend on a line connecting a central portion of the polygonal shape and the vertices when viewed in a plan view; a first damper mounting member fixed to a lower surface of the weight at a position of the central portion; Equipped with A tuned mass damper device characterized in that one end of each of the multiple first oil dampers is connected to the first damper mounting member and the other end is connected to a base to which the underside of the first laminated rubber bearing is fixed.

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