JP2722993B2 - Vibration control structure of middle-rise building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides an anti-seismic element such as a brace in a structure composed of columns and beams, and a vibration control device between the column or beams and the brace. It relates to the vibration control structure of middle- and high-rise buildings.

[0002]

2. Description of the Related Art Conventionally, as a vibration control structure of a building, for example, a seismic element such as a brace is installed on the surface of a frame composed of columns and beams, and a vibration control is provided between the brace and the beam or column. A hydraulic cylinder was installed as a device, and the hydraulic cylinder was controlled to adjust the degree of rigidity contribution of the brace to the frame to change the rigidity of the entire building, thereby reducing the response of the building to seismic force. Things are generally known. Also, a vibration damping structure in which a passive oil damper is installed instead of a hydraulic cylinder is known.

[0003]

However, in many of the conventional vibration damping structures of this type of building, since the vibration damping devices are installed on all floors, the number of vibration damping devices installed is greatly increased. It was extremely uneconomical. In addition, there is another problem that simply installing the vibration control device may cause the entire building to be twisted due to an uneven rigidity of the frame (an eccentric distance between the rigidity and the center of gravity increases).

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a vibration control structure of a middle-to-high-rise building in which the response of the building to seismic force can be reduced with a particularly small vibration control device. And

[0005]

According to a vibration control structure for a building according to the present invention, a seismic element such as a brace is installed on the surface of a frame composed of columns and beams, and the columns or beams are connected to the columns or beams. When installing a vibration damping device that changes the rigidity of the frame between the seismic elements, install the vibration damping device on each floor in two-way structures, and on different floors on the upper and lower floors. It is configured by installation.

[0006]

[Embodiment 1] 1 to 4 show an embodiment of a vibration control structure for a middle- and high-rise building according to the present invention. In the drawings, reference numeral 1 denotes a column of a building, 2 denotes a beam, and 3 denotes a column and a beam 2. An inverted V-shaped brace as an anti-seismic element installed in the structure surface of the frame, and reference numeral 4 denotes a vibration control device installed between the beam 2 and the inverted V-shaped brace 3. The inverted V-shaped brace 3 is installed on each of the building surfaces in the girder direction and the beam-to-beam direction of each floor of the building.

[0007] The vibration damping device 4 is installed on each floor in a lower floor portion of a building, and is installed every other floor in a middle floor portion and an upper floor portion. In addition, the vibration damping device 4 is installed in at least two directions in the girder direction and the beam-to-beam direction of the building, and in the middle floor portion and the upper floor portion, alternately in the adjacent structures (staggered). ) Is installed.

The rigidity of the vibration control device 4 can be changed by controlling the contribution of the inverted V-shaped brace 3 to the frame composed of the column 1 and the beam 2 by adjusting the hydraulic pressure, for example. A hydraulic cylinder or the like is used. Further, a passive oil damper may be installed as the vibration damping device 4 instead of the hydraulic cylinder as described above.

Further, the vibration damping device 4 is arranged so that each floor is twisted in the middle floor and the high floor, however, the directions of the twist are reversed in the upper and lower floors and are offset. There is no harmful twist on the whole.

[0010]

According to the present invention, the vibration control structure of a middle-to-high-rise building has the above-described structure. In particular, the vibration control device is installed on each floor in each of the two directions, and in the different floors on the upper and lower floors. , The response of the whole building can be reduced without causing torsional vibration in the building, and the whole building can be prevented from being twisted.

In addition, as compared with a building in which, for example, the vibration control devices are installed on all two floors (refer to FIG. 5), the number of vibration control devices to be installed can be reduced in the upper floors where the vibration control devices are generally small. Also, compared to a building without a vibration control device in the upper layer (see Fig. 6), it is possible to reduce the local response increase at the top of the building with the same number of installations. There is an effect that can be used economically.

[Brief description of the drawings]

FIG. 1 is a plan view of a lower floor portion showing an arrangement of a vibration control device of a building having a vibration control structure according to the present invention.

FIGS. 2 (a) and (b) are plan views of a middle floor portion and an upper floor portion showing an arrangement of a vibration control device of a building having a vibration control structure according to the present invention.

FIG. 3 is a vertical sectional view of all floors showing an arrangement of a vibration control device for a building having a vibration control structure according to the present invention.

FIG. 4 is a vertical sectional view of all floors showing an arrangement of a vibration control device for a building having a vibration control structure according to the present invention.

FIG. 5 is a vertical cross-sectional view showing all floors of a building having a conventional vibration control structure, showing the arrangement of the vibration control device.

FIG. 6 is a vertical sectional view showing all floors of a building having a conventional vibration control structure, showing an arrangement of the vibration control device.

[Explanation of symbols]

1 ... pillar, 2 ... beam, 3 ... inverted V-shaped brace, 4 ... vibration control device.

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Tomohiko Hatada 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Haruhiko Kurino 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (56) References JP-A-62-148775 (JP, A) JP-A-3-55366 (JP, A)

Claims (1)

(57) [Claims] 1. An anti-seismic element such as a brace is installed on the surface of a frame composed of columns and beams, and the rigidity of the frame is changed between the column or beam and the anti-seismic element. In a vibration control structure of a middle-high-rise building in which the devices are installed, the vibration control device is installed on a floor in two directions for each floor and on different floors on the upper and lower floors. Building damping structure.