JP3684845B2 - Building - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to buildings, especially residential traffic vibration and earthquake, about the building including the construction Tsukibutsu vibration control device that be damped and the like due to vibration wind.
[0002]
[Prior art]
As this type of conventional building vibration control device, there is one described in JP-A-8-128229. In the building vibration control device of the same publication, base brackets are arranged at both ends of a long plate-like weight, and the weight can be reciprocated in the weight longitudinal direction with respect to each base bracket. In addition, a damping material and a tension coil spring are interposed. The coil springs are disposed at both ends of the weight, and apply a tensile force in a direction to return to the neutral position with respect to the weight when a longitudinal displacement occurs in the weight. By providing this coil spring, the natural frequency of the weight in the horizontal direction can be adjusted.
[0003]
[Problems to be solved by the invention]
The conventional building vibration control device can control vibration in the longitudinal direction of the weight, but cannot control vibration in a direction perpendicular to the weight.
[0004]
An object of this invention is to provide the building provided with the building damping device which can suppress the vibration with respect to all the directions of a horizontal direction.
[0005]
[Means for Solving the Problems]
The building of the present invention is a building in which the building vibration control device is installed on the back of the ceiling, and the building vibration control device has a weight horizontally with respect to the base via the laminated rubber and the vibration damping material. It is a building vibration control device provided with a spring that supports it displaceably and urges the weight toward a neutral position, makes the weight displaceable in two orthogonal X and Y directions, and A first spring that urges a weight in the X direction and a second spring that urges a weight in the Y direction are provided as springs. The base is plate-shaped, and the weight is made of plate-like body that is disposed above, the weight is a square having four sides, Ri building damping apparatus der coil spring as the spring along the outside of each side of the weight is located A rectangular trough parallel to the base above the base. A plate is disposed, the weight is attached to the top plate, the top plate is supported by the base via the laminated rubber and the vibration damping material, and each of the four sides of the top plate A pair of side brackets project outwardly from the side bracket, a center bracket is disposed at an intermediate position of the side bracket, the center bracket is fixed to the base, and the center bracket and each side bracket are in which the coil spring, each characterized that you have laid between.
[0006]
According to such a building vibration control device for a building, vibrations in the X direction and the Y direction can be suppressed, and therefore vibrations in all horizontal directions combined with the X direction and the Y direction can be suppressed.
[0007]
In the present invention, the base is a plate shape, and the weights ing from plate-like body disposed above the base. C Eito is a square having four sides, a coil spring as the spring along the outside of each side of the weights are located. Since this building vibration control device has a low device height, it can also be installed in a ceiling space with a small height.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. FIG. 1 is a perspective view showing a building vibration control device used for a building according to an embodiment, FIG. 2 (a) is a plan view of the building vibration control device, and FIG. 2 (b) is a side view.
[0009]
The building vibration control device 10 includes a base 12, a top plate 14 disposed on the upper side of the base 12 so as to face the base 12, and a weight 20 fixed on the top plate 14 by bolts 16. ing. A suspension fitting 18 is screwed to the weight 20.
[0010]
The building vibration control device 10 is further disposed between the top plate 14 and the base 12 and is interposed between the top plate 14 and the base 12 and a laminated rubber 30 that supports the top plate 14. A vibration damping member 40 joined to both of them, a coil spring 50 for adjusting the natural frequency of the weight 20 in the horizontal direction, and the like are provided.
[0011]
In this embodiment, the top plate 14 and the weight 20 are square. A pair of side brackets 52 project laterally from each of the four sides of the top plate 14, and a center bracket 54 is disposed at an intermediate position between the pair of side brackets 52, 52. The center bracket 54 is fixed to the base 12 with bolts 56.
[0012]
Two hook bolts 58 are attached to each side bracket 52 by a nut 60, and the coil spring 50 is bridged between each hook bolt 58 and the center bracket 54.
[0013]
The laminated rubber 30 includes an upper flange 32 fixed to the top plate 14 by bolts, a lower flange 34 fixed to the base 12, and a plurality of rubber layers and iron plate layers interposed between the flanges 32 and 34. And a laminated body 36. The laminated rubber 30 supports the weight 20 and the load of the top plate 14. The rubber layer of the laminated body is deformed in the horizontal direction when a horizontal stress is applied, and the horizontal displacement (vibration) of the weight 20 and the top plate 14 is allowed.
[0014]
The vibration damping material 40 is for dampening horizontal vibration of the top plate 14 and the weight 20, and the upper and lower surfaces thereof are fixed to the top plate 14 and the base 12 by bonding or the like.
[0015]
As the vibration damping material 40, a gel-like material having small rigidity and large damping is preferable. With this gel-like vibration damping material, there is no risk of liquid leakage unlike a liquid damper. This vibration damping material preferably has a damping amount of about 5 to 20%. When the amount of attenuation is less than 5%, the attenuation effect is poor, and when it exceeds 20%, the weight 20 is difficult to move and the attenuation effect is also poor.
[0016]
Although not shown, a stopper mechanism for preventing an excessive displacement of the weight 20 may be provided.
[0017]
The building vibration control device 10 configured in this way is fixedly installed by bolts on a horizontal angle 72 laid between, for example, the beams 70 of the building. Since the weight 20 of the building vibration control device has a disk shape, and the device height of the building vibration control device is low, the building vibration control device can be installed in a ceiling space with a small height.
[0018]
When vibrations such as traffic vibrations, winds, and earthquake vibrations act on the building, the weight 20 vibrates in a direction opposite to the vibration relative to the base 12, thereby reducing the vibration of the building. can do.
[0019]
In this embodiment, the weight 20 is displaceable in all directions in the horizontal direction, and the coil spring 50 is in the horizontal X direction (left and right direction in FIG. 2A) and the horizontal Y direction (FIG. 2A). Since it is arranged in two orthogonal directions, the vibration in all horizontal directions generated in the building can be attenuated.
[0020]
In this case, the natural frequency of the weight 20 can be adjusted by changing the coil spring 50 to one having a different spring constant or changing the number of the coil springs 50. In addition, the natural frequencies in the X direction and the Y direction can be adjusted separately. For example, when the building vibration control device is installed in a building having a rectangular shape in plan view, the natural frequency in the longitudinal direction of the rectangle can be made larger than the natural frequency in the short direction.
[0021]
In construction Tsukibutsu of the present invention, it is preferable to set the weight of the weight 20 0.5 to 2% of the building weight. If the weight is less than 0.5% of the weight of the building, the vibration damping effect is poor, and if it exceeds 2%, the weight is too heavy and the installation of the building vibration control device is likely to be hindered.
[0022]
The illustrated weight 20, that have a plan view shape is a square.
[0023]
【The invention's effect】
As described above, the building vibration control device provided in the building of the present invention can attenuate vibrations in all horizontal directions. In addition, the natural frequency can be adjusted in each direction.
[Brief description of the drawings]
FIG. 1 is a perspective view of a building vibration control device for a building according to an embodiment.
FIG. 2 is a plan view and a side view of a building vibration control device for a building according to an embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Building damping device 12 Base 14 Top plate 20 Weight 30 Laminated rubber 40 Vibration damping material 50 Coil spring 52 Side bracket 54 Center bracket

Claims (2)

A building with a building damping device installed behind the ceiling,
The building vibration control device
It is a building vibration control device provided with a spring for supporting a weight displaceably in a horizontal direction via a laminated rubber and a vibration damping material with respect to a base, and urging the weight toward a neutral position.
The weight can be displaced in two directions, the X direction and the Y direction perpendicular to each other, and
As the spring, a first spring that biases a weight in the X direction and a second spring that biases a weight in the Y direction are provided.
The base is plate-shaped, and the weight is a disk-shaped body disposed above the base,
The weight is a square having four sides, Ri building damping apparatus der coil spring as the spring along the outside of each side of the weights are arranged,
A rectangular top plate is arranged on the upper side of the base in parallel with the base,
The weight is attached to the top plate,
The top plate is supported on the base via the laminated rubber and the vibration damping material,
A pair of side brackets project outwardly from each of the four sides of the top plate,
A center bracket is disposed in the middle of the side bracket,
The center bracket building characterized that you have the coil spring each bridged between the base being fixed to, said center bracket and the side bracket. Oite to claim 1, building, wherein the weight of the weight is from 0.5 to 2% of the building weight.

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