JPH0660537B2 - Vibration control equipment for high-rise buildings - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a vibration control device for suppressing vibration of a high-rise building during an earthquake.

(Prior Art) Generally, a high-rise building is constructed in a structure having a soft structure in order to prevent collapse due to an earthquake.

That is, in a conventional high-rise building, as shown in FIGS. 5 (A) and 5 (B), a base b is laid on a bedrock a, and a multi-story high-rise building c with a soft structure is constructed on the base b. is doing.

Therefore, when an earthquake occurs, this high-rise building receives a seismic wave d as shown in FIG. 5 (B), as shown by a chain line C ′ with the base c ₁ of the multi-story high-rise building c as a fulcrum. To
It is largely curved and displaced to prevent collapse of the multi-storey high-rise building c itself.

(Problems to be Solved by the Invention) However, the above-described high-rise building is a multi-story high-rise building c.
Since it is designed to prevent its collapse, it suppresses the vibration received in the above high-rise buildings at the time of an earthquake,
No consideration has been given to the protection and safety of residents and various office automation equipment, and the safety of these residents is desired.

The present invention has been made in view of the above-mentioned circumstances, and not only prevents collapse in the event of an earthquake, but also actively suppresses vibrations received in the high-rise building to protect residents and various OA equipment. It is an object of the present invention to provide a vibration control device for a high-rise building that is designed to improve safety and safety.

[Structure of Invention]

(Means for Solving the Problem) According to the present invention, vertical vibration control means laid so as to support a high-rise building at each corner of a base and each corner of each floor of the high-rise building. Horizontal seismic control means attached to each of the above, and a seismograph for detecting seismic waves transmitted to the high-rise building,
Various vibration modes of the high-rise building, which are obtained by dynamic analysis method based on the waveforms of various types of seismic waves in advance, are set, and when the seismic wave from the seismograph is input, the vibration mode of the high-rise building is determined by high-speed calculation. A central controller to
A vibration sensor provided for each of the layers, based on a signal from the vibration sensor, a unit controller for performing feedback control so as to return or suppress the vibration of each layer by the reaction force using each of the vibration control means, A plurality of unit control devices for interlocking control of each of these unit controllers in units of each layer and units of vertical movement, and a hierarchy system including the central control device that controls these unit control devices, and the central controller The control device inputs and calculates the seismic waveform from the seismograph when an earthquake occurs, determines the vibration mode of the high-rise building corresponding to the seismic waveform, and generates a control output for seismic control based on this vibration mode, A function to activate each seismic control device via the hierarchy system in the opposite direction in which each floor of the high-rise building is expected to shake, and A vibration control device of the high-rise building and having a function of activating the vibration control direction corresponding vibration control means through the hierarchy system based on input signals from the respective vibration sensors.

(Operation) According to the present invention, each of the above-mentioned vibration control means is operated in advance in the opposite direction where each floor of the high-rise building is expected to shake, and is suppressed,
The vibration of each floor is reduced and the vibration received in the high-rise building is positively suppressed to protect the occupants and various OA equipment and improve safety.

(Example) The present invention will be described below with reference to an illustrated example.

In FIGS. 1 to 4, reference numeral 1 is a bedrock,
A foundation 2 is placed on the bedrock 1. At each corner of the foundation 2, each damping hydraulic device (damping means) 3a,
3b, 3c, and 3d are laid so as to support the vertical motion of the high-rise building 4, and each floor 4 of this high-rise building 4
a, 4b, 4c, ... 4n (in the example of FIG. 3, every 5th floor), each seismic control hydraulic device (vibration control device) is installed at each corner, as shown in FIG. 2 and FIG. Means) 5a, 5b, 5c,
5d is attached so as to suppress each vibration mode of horizontal motion, and each of the seismic control hydraulic devices 5a, 5b, 5c,
5d is independent so as to suppress various vibration modes due to horizontal motion of each floor 4a, 4b, 4c, ... 4n of the high-rise building 4 previously obtained by an experiment or simulation of seismic vibration against many types of seismic waves. Then, they are individually operated and controlled. The damping means is not limited to the damping hydraulic device, but a damping pneumatic device or an electromagnetic damping device may be used.

On the other hand, as shown in FIG. 4, in a part of the high-rise building 4, a central control unit (computer which inputs various vibration modes obtained in advance by an experiment or simulation of seismic vibration for many types of seismic waves) ) 6 is installed, and a seismometer (not shown) installed in the ground is connected to the central control unit 6. Further, each unit control device 7a, 7b, 7c, ... 7n by a hierarchy system is connected to the central control device 6, and the unit control device 7a, 7b, 7c ,.
In n, a plurality of unit controllers 8a, 8b, 8c, 8d and 9a, 9b, 9c, 9d are provided for the respective damping hydraulic devices 3a,
3b, 3c, 3d and each of the vibration damping hydraulic devices 5a, 5
It is connected so as to control b, 5c and 5d.

In addition, vibration sensors (vibration detectors) that detect vibrations in the east-west and north-south directions are installed for each floor, and each vibration sensor, each unit controller, and each seismic control hydraulic device Each of them constitutes a lower closed loop control system.
The signals of all the vibration sensors are connected to the central controller 6 through a unit controller and a unit controller.

That is, the four control loops 8a, 8b, 8c, 8 of each layer
d and 9a, 9b, 9c, 9d do not control independently, but act in cooperation with each other based on the signals from each vibration sensor and the control signal of the central control unit 6 to control the high-rise building. To do.

A seismometer installed in the ground of a high-rise building is connected to the central control unit 6, and various vibration modes are calculated at high speed by a method such as a dynamic analysis method based on the seismic waveform of the seismometer. As a result, the shaking of a high-rise building can be predicted in advance, and thus balanced seismic isolation and vibration control can be performed so that an excessive force is not applied to the entire structure or locally.

In this way, the present invention is such that the central control device 6 and the unit control devices 7a, 7b, 7c, ... 7n for each layer and the unit controllers 8a, 8b, 8c, 8d and 9a, 9 are provided.
Each of the seismic control hydraulic devices 3a, 3b, 3c, 3d, 5a, 5 by the hierarchy system consisting of b, 9c, 9d.
b, 5c, 5d suppress and reduce the vibration of each layer,
The residents and various office automation equipment in the high-rise building 4 are protected and secured.

As a modification of the embodiment, if signals from three or more seismic stations near the high-rise building are connected to the central control unit 6, the epicenter, epicenter, and seismic wave type are high-rise earthquakes. Since it is possible to calculate before reaching the building and various vibration modes of a high-rise building can be obtained faster, Feed Forward control enables more accurate seismic isolation and vibration control.

In general, seismic waves are propagated in the ground as longitudinal waves (P waves) and transverse waves (S waves). Since the longitudinal wave speed is faster than the transverse wave speed, the longitudinal wave ( Vertical movement)
Only transmitted. During this period, it is said to be an initial tremor.

Therefore, according to the present invention, when an earthquake occurs, the seismograph buried in the ground detects the vibration caused by the initial microtremor at the time of the earthquake occurrence, and when this detection signal is transmitted to the central control device 6 and input, a large number of signals are stored in advance. The central controller 6 which inputs various vibration modes obtained by an experiment or simulation of seismic vibration for the type of seismic wave calculates the output signal from the vibration sensor and the waveform signal from the seismograph, and further,
Based on the output signal from the central control device 6, the unit controllers 8a, 8b, 8c, 8d ... And the unit control devices 7a, 7b, 7c, 7d vertically control the seismic control hydraulic devices 3a, 3b, respectively. 3c, 3d and horizontal motions of the seismic control hydraulic devices 5a, 5b, 5c, 5d are respectively actuated to cause vibrations of vertical motion and horizontal motion. The vibration suppression devices are operated and suppressed in the opposite direction expected to reduce the vibration of each floor.

Although the above-mentioned embodiment relates to a vibration control device for a high-rise building at the time of occurrence of an earthquake, the present invention is a slight modification to a general structure (for example, in the case of a non-high-rise building, the number of system components is reduced). ) Is clearly applicable.

〔The invention's effect〕

As described above, according to the present invention, when an earthquake occurs, the output signal from the vibration sensor and the waveform signal of the seismic wave from the seismograph are calculated by the central control device, and based on the output signal from the central control device. , Each unit controller and each unit controller actuate the respective vertical vibration control means and the horizontal vibration control means respectively to set the vertical and horizontal vibration modes at the same time or immediately before the seismic wave arrives. Since each of the above-mentioned high-rise buildings is actively restrained by operating each of the above-mentioned vibration control means in the opposite direction expected to shake, not only can the vibration during an earthquake be significantly reduced, but also inside the above-mentioned high-rise building. It has excellent effects such as protection and safety of residents and various office automation equipment.

[Brief description of drawings]

FIG. 1 is an explanatory view of a vibration control device for a lower part of a high-rise building according to the present invention, FIG. 2 is a cross-sectional view of a vibration control device for a high-rise building according to the present invention, and FIG. 3 is a vibration control device for a high-rise building according to the present invention. FIG. 4 is a longitudinal sectional view of the seismic device, FIG. 4 is a diagram showing a hierarchy system incorporated in the present invention, and FIGS. 5 (A) and 5 (B) are views for explaining a conventional earthquake-resistant structure of a high-rise building. Is. 2 ... Base, 3a, 3b, 3c, 3d ... Seismic control hydraulic device, 4 ... High-rise building, 5a, 5b, 5c, 5d ... Seismic control hydraulic device, 6 ... Central control device, 7a, 7b , 7c, ...
7n ... Unit controller, 8a, 8b, 8c, 8d and 9a, 9b, 9c, 9d ... Unit controller.

Claims (1)

[Claims] 1. A vertical motion control means laid to support a high-rise building at each corner of the base, and a horizontal motion attached to each corner of each floor of the high-rise building. Seismic control means, seismograph for detecting seismic waves transmitted to the above high-rise building,
Various vibration modes of the high-rise building that have been obtained in advance by a dynamic analysis method based on the waveforms of various types of seismic waves are set, and when the seismic wave from the seismometer is input, the vibration mode of the high-rise building is determined by high-speed calculation. A central controller to
A vibration sensor provided for each of the floors, based on a signal from the vibration sensor, a unit controller for performing feedback control so that the vibration of each floor is returned or suppressed by a reaction force using each of the vibration control means, A plurality of unit control devices for interlocking control of each of these unit controllers in units of each layer and units of vertical movement, and a hierarchy system including the central control device that controls these unit control devices, and the central controller The control device inputs and calculates the seismic waveform from the seismograph when an earthquake occurs, determines the vibration mode of the high-rise building corresponding to the seismic waveform, and generates a control output for seismic control based on this vibration mode, A function to activate each seismic control device via the hierarchy system in the opposite direction in which each floor of the high-rise building is expected to shake, and Damping device high-rise building and having a function of activating the vibration control direction corresponding vibration control means through the hierarchy system based on input signals from the respective vibration sensors.