JP2644536B2 - Vibration control structure of building structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a building structure for suppressing a building or other building from vibrating or a floor from vibrating due to an earthquake or the like. About the vibration control structure.

<Conventional technology> Conventionally, as a vibration control structure for a building structure, a water tank has been installed above the building structure, and a wave generator has been installed to make the water stored there wave in a specific direction at a specific period. Then, when a heavy object is added,
The direction and period of the seismic wave are immediately analyzed, and the analyzed period activates a wave generator to generate a wave in the direction to cancel the seismic wave, or displaces a heavy object, such as an earthquake. In this way, the building structure was prevented from vibrating.

<Problems to be Solved by the Invention> However, according to such a conventional configuration, since a large-capacity water tank or heavy object is installed on the construction structure, the installation of the water tank or heavy object is costly. In addition, the strength of the building structure must be increased to support the load of the water tank and heavy objects, and the power consumption for driving the wave generator and displacing the heavy objects increases. And the initial cost and the running cost are both high.

The present invention has been made in view of such circumstances, and a vibration damping structure of a first building structure according to the present invention has a structure in which a vibration caused by an earthquake propagates to the building structure. When a floor or floor vibrates, the vibration is attenuated early with a simple configuration, and the damping is adjusted according to the vibration, so that the vibration of building structures and floors can be reduced at a low cost and suppressed well. The vibration control structure of the second building structure according to the present invention aims to provide the vibration control structure of the first building structure according to the present invention at a lower cost. .

<Means for Solving the Problems> The vibration damping structure of the first building structure according to the present invention has a structure in which some walls or floors of the structure are attached to the structure in order to achieve the above object. A movable damper mechanism is provided between the movable wall or the movable floor and the structure, and a damper mechanism is provided between the movable wall or the movable floor and the structural body. Along with a resistance adjustment mechanism that adjusts the resistance applied to the relative displacement with the structure, a vibration sensor that detects the behavior of the structure is provided, and based on the behavior detection by the vibration sensor, the resistance adjustment mechanism is operated, A controller is provided for controlling a resistance applied to a relative displacement between the movable wall or the movable floor and the structure.

In order to achieve the above object, the vibration control structure of the second building structure according to the present invention includes a damper mechanism, which is a component member of the vibration control structure of the first building structure, provided with a damper oil. The piston rod is slidably provided in a damper cylinder enclosing the piston, the cylinder chambers on both sides of the piston are connected to each other by a communication pipe, and the resistance adjustment mechanism is composed of a valve interposed in the communication pipe. Further, the control device is configured by a control circuit that controls the opening degree of the valve based on the behavior detection by the vibration sensor.

<Operation> According to the vibration control structure of the first building structure according to the present invention,
The vibration propagates to the structure due to the earthquake, and the structure is displaced in the horizontal direction, so that both the movable wall or movable floor and the structure approach each other, or conversely, both sides move away from each other. When the relative displacement is attempted, the damper mechanism acts to provide resistance to the relative displacement with the structure. Then, when the structure is displaced in the horizontal direction from the stationary state, based on the behavior detection by the vibration sensor, in the initial stage of the displacement, the resistance given to the relative displacement is reduced,
The movable wall or the movable floor is kept stationary by inertia due to its own weight, and thereafter, when the movable wall or the movable floor is pulled by the structure and is displaced in the horizontal direction from the stationary state, the resistance to be applied is gradually increased. The movable wall or the movable floor is displaced integrally with the structure while increasing the size, and thereafter, the structure is displaced to the side where the movable state returns to the stationary state and the movable wall or the movable floor returns near the stationary state position. Repeats the control operation of maintaining the integral displacement state and maintaining the stationary state by inertia due to its own weight while gradually reducing the applied resistance as the movable wall or movable floor approaches the stationary state position. The displacement width of the movable wall or movable floor from the stationary state is reduced with respect to the displacement of the structure, thereby suppressing the vibration of the movable floor and the structure. The attenuation of the dynamic and more rapidly, it is possible to favorably suppress the vibration and vibration of the movable floor as a whole building structure due like earthquakes.

And, according to the vibration control structure of the second building structure according to the present invention, based on the detection of the behavior by the vibration sensor, the valve interposed in the communication pipe connecting the two cylinder chambers constituting the damper cylinder to each other is connected. The opening is adjusted and controlled, and the vibration of the entire building structure and the vibration of the movable floor due to an earthquake or the like can be suppressed in the same manner as in the above-described vibration control structure of the second building structure.

<Example> Next, an example of the present invention will be described in detail with reference to the drawings.

<First embodiment> Fig. 1 shows a first example of a vibration control structure of a building structure according to the present invention.
FIG. 2 is a partially cut-away enlarged view of a main part of FIG. 1, and almost the entire floor 1 of the top floor of the structure A and a predetermined intermediate floor is shown in FIG. It is suspended from the ceiling wall 2 via rods 3 so as to be displaceable in the horizontal direction.

A first damper cylinder 4 filled with damper oil is attached to a predetermined location on the horizontal outer peripheral end surface of the movable floor 1 and the first damper cylinder 4
, A double rod type first piston rod 6 connected to a piston 5 is slidably provided, while a predetermined portion of a wall portion 7 of the structure A is opposed to a horizontal outer peripheral end surface of the movable floor 1. 3, a pair of second damper cylinders 8, 8 each containing damper oil are attached, as shown in FIG. 3 (a partially cutaway enlarged view taken along the line III-III in FIG. 2). Each of the two damper cylinders 8 and 8 is provided with a double rod type second piston rod 10 slidably connected to a piston 9.

A pair of brackets 11 and 11 are connected to the second piston rod 10 in a state of facing each other, and the distal end side of the first piston rod 6 is internally fitted between the brackets 11 and 11 and the second The first piston rod 6 and the brackets 11 and 11 are connected via a connecting pin 12 and an elongated hole 13 in the vertical direction.

In each of the first and second damper cylinders 4, 8, 8, the cylinder chambers R1, R2 on both sides of the pistons 5, 9 are connected to each other through the communication pipe 14, and the horizontal displacement accompanying the vibration of the structure A is caused. Regardless, the damper mechanism is configured to allow the relative displacement of the movable floor 1 with respect to the structure A, maintain the movable floor 1 in a stationary state, and impart resistance to the relative displacement of the movable floor 1 with respect to the structure A. Have been.

Each of the communication pipes 14 is provided with an electromagnetically operated flow rate adjustment valve 15 as a resistance adjustment mechanism.

Vibration sensors 16a and 16b are mounted on a predetermined portion of the wall portion 7 and on the movable floor 1, respectively. A control circuit 17 as a control device is connected to the vibration sensors 16a and 16b. Are connected to each other, and when a vibration occurs, a drive signal is output from the control circuit 17 to each of the flow control valves 15... Based on the behavior of the structure A by a signal from the vibration sensors 16a and 16b, and the flow control valves 15. The opening degree is gradually switched from the open state to the closed state, and the resistance applied to the relative displacement from the state where the movable floor 1 is displaced relative to the structure A to the state where the movable floor 1 is integrally displaced is adjusted and controlled. The switching is performed while the vibration of the building A is damped faster, and the vibration of the building structure as a whole caused by an earthquake or the like can be suppressed.

It is also possible to use an on-off valve instead of the flow control valve 15.

In the first embodiment, the first and second damper cylinders 4 and 8 are provided, and the two chambers R1 and R2 are connected to each other through the communication pipe 14 to form a damper mechanism. As the present invention, for example, with respect to the movable floor 1 or the movable wall and the structure A, a fixed shaft is provided on one of them, and a gripping member is provided on the other, and the gripping member is provided.
It is configured to be switchable between a state in which the fixed axis is gripped and a state in which the fixed axis is not gripped, and in a state in which the fixed axis is gripped by the gripping member, the movable floor 1 or the movable wall can be displaced integrally with the structure A. The movable floor 1 or the movable wall may be configured to be displaceable relative to the structure A when the fixed shaft is not gripped, or a friction member may be attached to the gripping member, and the frictional resistance may be adjusted by adjusting the gripping force. And various configurations can be adopted such that the resistance applied to the relative displacement between the movable floor 1 or the movable wall and the structure A can be continuously changed.

As described above, when the resistance applied to the relative displacement between the movable floor 1 or the movable wall and the structure A can be continuously changed, for example, the resistance is large and the structure A is integrally formed. When changing from a state of displacement to a state of relative displacement with an extremely small resistance, there is an advantage that it is possible to avoid concentration of stress on the movable floor 1 or the movable wall.

<Second embodiment> Fig. 4 shows a second example of the vibration control structure of the building structure according to the present invention.
FIG. 5 is a partially cut-away enlarged view of a main portion showing an embodiment, and FIG. 5 is a partially cut-away enlarged view taken along line VV of FIG. 4. The features of the second embodiment are as follows. On the point.

That is, the communication pipe 14 in the first embodiment,
Flow control valve 15, vibration sensor 16 and control circuit
17 are omitted, and orifice holes 5a, 9a, 9a are formed in the pistons 5, 9, 9 in the first damper cylinder 4 and the second damper cylinder 8, 8, respectively, and the movable wall 1 and the structure A The damper mechanism is configured to provide resistance to the relative displacement with the damper mechanism.

The other configuration is the same as that of the first embodiment, and the same reference numerals are given and the description is omitted.

In the above embodiment, the predetermined floor 1 which is a part of the structure A is configured to be displaceable. However, in the present invention, the predetermined wall portion 7 which is a part of the structure A is replaced with the floor 1. May be configured to be displaceable.

In addition, the floor is not limited to the floors 1 and 1 at the top and middle floors.
The floors 1 of three or more floors may be configured to be displaceable.

<Effect of the Invention> According to the vibration control structure of the first building structure according to the present invention,
While using a part of the wall or floor of the structure, with a simple configuration that only attaches a damper mechanism to it, the vibration of the movable floor is suppressed and the vibration of the building structure is attenuated. Based on the detection of the behavior of the structure by the vibration sensor, the resistance applied by the damper mechanism is adjusted and controlled, so that it is not necessary to add a water tank or heavy object like a conventional water tank or a vibration control structure using heavy objects, It is not necessary to increase the strength of the structure to support the structure for vibration control, and the vibration of the building structure can be attenuated even earlier, making the vibration of the building structure and floor less expensive. It became possible to control well.

According to the vibration control structure of the second building structure according to the present invention, the damper cylinder, the communication pipe for connecting and connecting the cylinder chambers constituting the damper cylinder, and the valve interposed in the communication pipe are provided. And a control circuit that adjusts and controls the degree of opening of the valve to reduce the vibration of the movable floor and to attenuate the vibration of the building structure more quickly. In addition, a building structure capable of effectively suppressing vibration can be constructed at a low cost.

In addition, since vibrations on the movable floor can be suppressed well, for example, by installing equipment that easily generates a failure due to vibrations on the movable floor, such as OA equipment such as a computer or various measuring instruments, the occurrence of vibrations due to vibrations Can be avoided, and the practical effect is great.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of a vibration damping structure of a building structure according to the present invention, and FIG. 1 is a schematic longitudinal sectional view showing a first embodiment of a vibration damping structure of a building structure. FIG. 2 is a partially cutaway enlarged view of a main part of FIG. 1, FIG. 3 is a partially cutaway enlarged view taken along line III-III of FIG. 2, and FIG. 4 is a second embodiment. 5 is a partially cutaway enlarged view of a main portion of FIG. 5, and FIG. 5 is a partially cutaway enlarged view taken along line VV of FIG. 1 movable floor 4 first damper cylinder 5 piston of first damper cylinder 5a orifice hole 6 first piston rod 8 second damper cylinder 9 second Damper cylinder piston 9a Orifice hole 10 Second piston rod 14 Communication pipe 15 Flow control valve 16a Vibration sensor 16b Vibration sensor 17 Control circuit A Structure R1, R2 …… Cylinder chamber

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshinori Takahashi 3-1-1, Mokudori, Mihara-cho, Minamikawachi-gun, Osaka Prefecture Osaka Research Institute, Takenaka Corporation (72) Inventor Waki Katayama Osaka 3-18, Mokudori, Mihara-cho, Minamikawachi-gun Takenaka Corporation Technical Research Institute Osaka Branch (56) References JP-A-1-165885 (JP, A)

Claims (2)

(57) [Claims] A part of a wall or a floor of a structure is provided so as to be displaceable in a horizontal direction with respect to the structure, and a movable wall or a movable floor is provided between the structure and the movable member. Interposing a damper mechanism that imparts resistance, the damper mechanism
Attached with a resistance adjusting mechanism for adjusting the resistance applied to the relative displacement between the movable wall or the movable floor and the structure, and provided with a vibration sensor for detecting the behavior of the structure, based on the behavior detection by the vibration sensor And a controller for controlling the resistance applied to the relative displacement between the movable wall or movable floor and the structure by operating the resistance adjusting mechanism. 2. The damper mechanism according to claim 1, wherein a piston rod is slidably provided in a damper cylinder filled with damper oil, and cylinder chambers on both sides of the piston are connected to each other by a communication pipe. The said resistance adjustment mechanism is a valve interposed in the said communication pipe, The said control apparatus is a control circuit which adjusts and controls the opening degree of the said valve based on the behavior detection by the said vibration sensor. (1). The seismic control structure of the described building structure.