JPH04285276A - Vibration-control building employing aseismic device - Google Patents

Abstract

PURPOSE:To apply an aseismic device to restrain oscillation of a multi-storied building due to an earthquake and wind. CONSTITUTION:The rooftop portion 2 or the tower portion 3 of a building 1 is supported by an aseismic device 4 comprising a movable support portion 4a and a damper 4b. Since the building is executed with application of the aseismic device whose degree of technical perfection is high, the technical reliability is high and the execution of the building is easy. Since the rooftop portion 2 or the tower 3 can be utilized directly for its proper purpose, the space can be used effectively and economy is high. As a result of high damping effects, the comfortability and usability of the building 1 are enhanced.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration-damping building that uses a seismic isolation device to suppress the shaking of high-rise buildings caused by earthquakes and wind.

0002

[Prior Art] Vibration control technology aims to improve daily livability and usability by suppressing the shaking of buildings caused by earthquakes and wind due to the rise in the height of buildings in recent years and the elongated pencil-shaped buildings built on narrow land. is attracting attention. Vibration damping technology can be broadly divided into passive methods and active methods, depending on the method used to suppress shaking. Passive methods that do not require external energy to suppress or control shaking are further classified into additional vibration types and energy absorption mechanism types. The additional vibration type is an auxiliary vibration body that is added to the main structure (building) to suppress shaking.
A typical system is a tuned mass damper. This tuned mass damper is
It is a system that suppresses shaking by matching the natural frequencies of the main structure (building) and the tuned mass damper, creating a so-called resonance phenomenon, and is used in tower-like structures such as Chiba Port Tower or Higashiyama Sky Tower in Nagoya City. There are already examples of this.

0003

[Problems to be solved by the present invention] The vibration damping system using the above-mentioned tuned mass damper installs a pendulum (automatic vibration device) with a natural period close to the first natural period of the building on the roof of a high-rise building, and This is done in a way that reduces the inertial force of the building that occurs when the building is inertia, but when implementing vibration damping buildings using conventional tuned mass dampers, a tuned mass (pendulum = free vibration device) is separately installed on the roof of the building. Therefore, there is a problem that the space on the roof floor is limited and the space cannot be used effectively, which is an issue that needs to be solved.

0004

[Means for Solving the Problems] As a means for solving the problems of the above-mentioned prior art, a vibration-damping building using a seismic isolation device according to the present invention is constructed on the roof floor of a building 1, as an example shown in the drawings. It is characterized in that the portion 2 or the tower portion 3 is supported by a seismic isolation device 4 comprising a movable support portion 4a and an attenuation damper 4b.

[0005]

[Operation] The roof floor portion 2 or tower portion 3 of the building 1 is used as a tuning mass. That is, regardless of its type or structure, the seismic isolation device 4 originally has a long natural period, and the building 1 also has a long natural period. Proper adjustment will produce a vibration damping effect for the entire building.

[0006] Moreover, since the roof floor portion 2 or the tower portion 3 can be used as is for its original purpose, the space on the roof of the building 1 can be used effectively.

[0007]

Embodiments Next, illustrated embodiments of the present invention will be described. FIG. 1 shows a vibration-damping building in which the roof floor 2 of a high-rise building 1 is structurally separated from the lower floor and is supported by a seismic isolation device 4. Reference numeral 5 in the figure indicates a support pile. The details of the support structure of the roof floor portion 2 by the seismic isolation device 4 are shown in FIG. That is, the roof floor part 2, which is separated from the lower floor part of the building 1 by securing a gap S as a maintenance space, is formed into a columnar shape by laminating donut-shaped steel plates and rubber sheets alternately and bonding them to each other. The movable support part 4a has a laminated rubber steel plate structure, and the attenuation damper 4b is made of a lead column arranged at the center of the movable support part 4a and whose upper and lower ends are connected to the roof floor part 2 and the lower floor part. It is supported by a seismic isolation device 4. The roof floor portion 2 is supported for free horizontal movement by a movable support portion 4a having a laminated rubber steel plate structure, and the horizontal movement of the roof floor portion 2 is attenuated by a damper 4b made of a lead column. Therefore, by adjusting the mass of the roof floor part 2 using a design method,
The roof floor portion 2 becomes a pendulum with a natural period close to the first natural period of the building 1, and the inertial force generated in the building 1 during an earthquake is reduced by the resonance of the roof floor portion 2, producing a vibration damping effect.

FIG. 3 shows that the tower part 3 of the building 1 is equipped with a seismic isolation device 4.
An example of a damped building supported by Note that the structure, type, function, etc. of the seismic isolation device 4 employed in the present invention are not limited to the illustrated example. For example, a seismic isolation device in which a movable support part 4a and a damping damper 4b are arranged separately, a seismic isolation device in which rolling steel balls are applied to the movable support part, and a seismic isolation device in which viscous resistance of liquid is applied to the damping damper 4b. It is possible to employ various well-known devices such as a seismic device, a seismic isolation device using a frictional resistance or a spring in combination with the attenuation damper 4b, and the like.

[0009]

[Effects achieved by the present invention] The vibration-damping building using a seismic isolation device according to the present invention has high technical reliability because it is implemented by applying a seismic isolation device that is already highly technically complete. Easy to implement. Further, since the roof floor portion 2 or the tower portion 3 can be used for its original purpose as is, the space can be used effectively and is highly economical. As a result of the high vibration damping effect, the livability and usability of the building 1 can be improved.

[Brief explanation of the drawing]

FIG. 1 is an elevational view of a vibration-damping building whose roof floor is supported by a seismic isolation device.

FIG. 2 is an enlarged view showing in detail the support structure of the roof floor portion using a seismic isolation device.

FIG. 3 is an elevational view of a vibration-damping building in which the tower portion is supported by a seismic isolation device.

[Explanation of symbols]

1 Building 2 Rooftop floor part 3 Tower part 4a Movable support part 4b Attenuation damper 4 Seismic isolation device

Claims (1)

[Claims] 1. A vibration-damping building to which a seismic isolation device is applied, characterized in that a roof floor portion or a tower portion of the building is supported by a seismic isolation device comprising a movable support portion and a damper.