JPH04169666A - Support device for structure - Google Patents

Abstract

PURPOSE:To facilitate the vibration control of a structure by sealing a high pressure fluid in a space part formed of a bearing plate on a foundation and the bearing of the structure to support the structure by the fluid pressure, and providing a control unit far controlling this clearance. CONSTITUTION:A support device is formed of a high pressure fluid supply device and a control unit provided in a space part formed by the bearing 3 of a structure 1 and a bearing plate on a foundation. The high pressure fluid supply device is formed of an air compressor 5 and an air pipeline 7. The control unit for controlling the clearance between the bearing 3 and the bearing plate 2 is formed of a sensor 8, an amplifier 9 and an automatic control valve 6. Then, a fluid is sealed in the space part 4 through the high pressure fluid supply device, the distance of the space part 4 is detected by the sensor 8, and the resulting signal is amplified by the amplifier 9 and sent to the automatic control valve 6 to control the opening and closing of this valve. Thus, the distance between the bearing 3 and the bearing plate 2 can be kept constant.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a support device for supporting vertical loads of structures.

(Prior art) In seismic isolation structures, (i) laminated rubber bearings are used, and (+1) sliding bearings are used. In addition, in building vibration damping, the mass for both passive and active vibration damping devices (iii) is mounted on a linear motion device such as a linear way,
(iv) A method such as hanging with a wire or the like is used.

(Problems to be Solved by the Invention) In the conventional device, (1) the laminated rubber requires a height of several + 1;
There are also limits to its ability to transform. In addition, since it is made to order and made to order, it is expensive and requires a long production period.

(11) In sliding bearings, there is a large possibility that the coefficient of friction and frictional force will fluctuate due to changes in materials over time, changes in loaded weight, etc., so a margin in design and careful maintenance are essential.

(ij) Resistance force (II! friction force) also acts on linear motion devices, and when this is used for passive vibration damping, it will not start unless an external force on a certain plate is applied, and when using active vibration damping, it will not start if an external force is applied to the plate. The device must have an extra capacity corresponding to the frictional force.

(1 to .) In the hanging method, a considerable installation height is required, and in the case of active damping, the vertical movement of the mass becomes a disadvantageous factor in terms of control.

The present invention has been proposed in view of the problems of the prior art, and its purpose is to provide structures with almost no frictional force in the horizontal direction, and to economically improve the structure in the vertical direction. The object of the present invention is to provide a support device for a structure that supports a load.

(Means for Solving the Problems) In order to achieve the above-mentioned object, a structure support device according to the present invention provides a support device for a structure in a seal space formed between a bearing plate installed on a base and a support for the structure. , a high-pressure fluid supply device is connected thereto, and the supply device is provided with a control device that maintains a constant gap between the bearing pressure plate and the bearing.

(Function) Since the present invention is configured as described above, high pressure fluid is supplied to the seal space formed between the pressure bearing plate installed on the base and the support of the structure through the high pressure fluid supply device. The structure is supported by fluid pressure by encapsulating it.

By sealing the high-pressure fluid in the seal space, a control device provided in the high-pressure fluid supply device is used to prevent the gap between the bearing pressure plate and the support from becoming too wide and the seal to be broken. By controlling the amount of pressure fluid flowing into the space, the distance between the support and the bearing pressure plate is maintained constant.

(Example) The present invention will be described below with reference to the illustrated embodiments.

1 is a structure and is supported on a bearing plate 2 installed on a foundation via a support device Ha of the present invention.

1 and 2 show details of the support device a, and the structure 1
An air compressor 5 is connected to a seal space 4 formed between the bearing 3 and the bearing pressure plate 2 installed in the bearing 3 via an air pipe 7 in which an automatic control valve 6 is interposed in the middle. A distance sensor 8 detects the distance between the pressure plate 2 and the pressure plate 2, and this detection signal is amplified by an amplifier 9 and sent to the automatic control valve 6. The opening and closing of the valve 6 is controlled to close the gap in the seal space 4. Hold constant.

The air compressor 5 and air piping 7 constitute the high-pressure fluid supply device, and the distance sensor 8, amplifier 9, and automatic control valve 6 constitute a control device that maintains a constant gap between the bearing pressure plate and the support. It is something to do.

IO is a pole block disposed on the outer periphery of the seal space 4, and when it is difficult to connect ball blocks to make a cylindrical magnet, a bar magnet 11 as shown is used.

In the illustrated embodiment, the device is circular, but it may also be square.

On the other hand, the magnetic fluid 12 is supplied to the peripheral portion of the seal space 4 by a magnetic fluid replenishing device 13 . In the figure, 14 is a magnetic fluid supply pipe.

Figure 3 shows the details of the magnetic fluid sealing part, and shows the bearing plate 2.
By configuring a with a magnetic material such as steel, the magnetic fluid 12 is strongly attracted to the edge of the pole block 10 where the magnetic field is strong, and the seal space 4 is kept airtight.

In the figure, 15 is a magnetic circuit.

FIGS. 4 and 5 show another embodiment of a control device that maintains the spacing between the bearing pressure plate 2 and the support 3 constant, and a support rod 16 hanging vertically from the support 3 is provided with an upper and lower support rod 16 parallel to each other. Rod 1
7.18 are pivotally connected via pins 19.19', and one end of each rod 17.1B is pinned to a perpendicular rod 21 with casters 20 movably supported on the bearing plate 2. 22
．． 22', and the other end is pivotally connected via a pin 25.25' to a valve rod 24 which is vertically installed from an on-off valve 23 attached to the opening of the air pipe 7 that opens into the seal space 4. A bullet 26.26' is stretched between the pins 19 and 25' and between the pins 19' and 22. (See Figure 4).

When the gap between the support 3 and the bearing pressure Fi2 in the seal space 4 narrows, each of the rods 17 and 18 moves in parallel, as shown in FIG. 7
The opening of the seal space 4 is opened, and pressurized air is sealed from the compressor through the opening into the seal space 4 as shown by the arrow in FIG. When returned, the on-off valve 23 closes and blocks air from flowing into the seal space 4.

(Effects of the Invention) According to the present invention, as described above, a seal space is formed between the bearing plate installed on the base and the support of the structure! By connecting a high-pressure fluid supply device and providing the supply device with a control device that maintains a constant gap between the bearing pressure plate and the bearing, only fluid is interposed between the bearing and the bearing pressure plate. Therefore, the frictional force hardly acts,
Therefore, vibration control of buildings and masses for seismic isolation and damping is easily performed, and the height of the device itself does not require any height compared to conventional laminated rubber or pendulum structures.

Furthermore, since standardized ready-made products can be used in terms of cost, it is cheaper than laminated rubber, and the delivery time is also shortened.

In addition, since there is almost no fluid leakage from the sealed space, the high-pressure fluid supply device can use a small-capacity compressor, which reduces equipment costs and maintenance costs.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing one embodiment of the structure support device according to the present invention, FIG. 2 is a partial cross-sectional plan view thereof, and FIG. 4 and 5 are longitudinal cross-sectional views showing the operating state of another embodiment of the control device for maintaining a constant gap between the bearing pressure plate and the bearing, respectively, and FIG. 6 shows the device according to the present invention. FIG. 7 is a front view of the structure equipped with the structure shown in FIG. 1... Structure, 2... Bearing plate. 3...Support, 4...Seal space 15-...Air compressor, 6...Automatic control valve. 7...Air piping, 8...Distance sensor. 9...Amplifier, 10...Pole block. 12...Magnetic fluid.

Claims (2)

[Claims] (1) A high-pressure fluid supply device is connected to the seal space formed between the bearing pressure plate installed on the foundation and the support of the structure, and the gap between the bearing pressure plate and the support is fixed to the same supply device. A support device for a structure, comprising a control device for holding the structure. (2) The structure according to claim 1, wherein the bearing plate is made of a magnetic metal, and the peripheral edge of the seal space formed between the bearing plate and the support of the structure is sealed with a magnetic fluid. Support device.