JPH10184093A - Vibration isolation element - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration isolation device, in which there is no possibility of a change with time for a long time, which is brought to a maintenance free state, in which no time is required and which can be used without anxiety. SOLUTION: Vibrations in the horizontal direction are isolated by a means supporting its own weight by a fluid. The fluid 3 is held between upper and lower two metal plates 1, 2. When the fluid 3 having small viscosity is held between the two horizontal metal plates 1, 2 and the plates 1, 2 are moved mutually horizontally, friction is hardly generated. The fluid is surrounded by a sealing material so as not to escape to a periphery. A spring element is removed completely freely in the rectangular direction (the horizontal direction) to a loaded article while supporting its own big weight of the loaded article.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[Technical field to which the invention pertains] Seismic isolation technology for architecture, civil engineering structures, and important properties

[0002]

[Prior art] A system in which a damper element is combined with a laminated rubber for seismic isolation is often used. The effect of laminated rubber against earthquakes is that the vibration of the earthquake is not directly transmitted to the load, but at the same time it is laminated with the load. The mass composed of rubber and the resonance of the spring system occur, and the vibration with a relatively slow cycle tends to remain for a long time. Therefore, it is used in combination with various damping mechanisms. There are mechanisms that use damping force such as oil dampers, lead rod dampers, etc. In the case of a lightweight load, the spring constant of the laminated rubber cannot be reduced, so there is no effect. Will move under the influence of the wind

[0003]

In seismic isolation technology, if the seismic isolation element has as few spring elements in the vibration direction as possible while supporting the enormous weight of the load, it is not necessary to consider the residual resonance vibration due to resonance. It will be better and the accompanying damping elements will be unnecessary or simplified. As long as the spring constant is small, even a lightly loaded one has sufficient seismic isolation effect. There is a demand that they do not move with the force of the wind. In addition, there is no need to worry about aging over a long period of time, it must be maintenance-free, hassle-free, and can be used with confidence.

[0004]

[Means for Solving the Problems] In the present invention, this problem can be solved by means of supporting the own weight with a fluid. First, (Fig. 1-1) (Fig. 1-2) sandwich the fluid (Fig. 1-3) between the upper and lower two metal plates. There is almost no friction when two fluids with low viscosity are sandwiched between two horizontal plates and they are moved horizontally. Enclose with a sealing material (Fig. 1-4) so that the fluid does not escape around. When moving horizontally, the frictional force of this sealing material is generated, but the area ratio is very small, so the vertical force applied to the sealing material is small at that ratio and the frictional force is calculated by multiplying the vertical force by the friction coefficient. Is negligible. While supporting the huge weight of the load, in the direction perpendicular to it (horizontal direction)
We realized that you can slide freely without any spring element.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The product of the present invention is sandwiched between the lower surface of a building, civil engineering structure, important property, etc. (FIG. 2-6) and the upper surface of a foundation (FIG. 2-8) (FIG. 2-7). ) Install.

[0006]

[Example] For earthquake countermeasures, use buildings. Protection of bridges, factories, large-scale equipment, expensive properties, and important properties

[0007]

[Effect of the Invention] The seismic isolation element during an earthquake is superior to the conventional one in the following points. 1 Does not move under the influence of wind. 2. When an earthquake or disturbance exceeding a certain magnitude occurs, it moves lightly and the spring constant is small. 3 Very heavy objects can be used. 4. Light weight is also effective. 5 The mechanism is simple and there is no failure. 6. There is no worry about aging. 7 No maintenance is required.

[Brief description of the drawings]

[Figure 1] Seismic isolation element

[Figure 2] When installed in a building

Fig. 3 Composite seismic isolation element

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper metal plate 2 Lower metal plate 3 Fluid 4 Packing 5 Maximum displacement restraint part 6 Building 7 Main seismic isolation element 8 Foundation ground 9 Lower metal plate 10 Upper metal plate 11 Lower holding plate 12 Middle packing 13 Upper packing 14 Upper metal plate 15 Upper holding plate 16 Lower metal plate 17 Lower packing 18 Fluid

Claims (2)

[Claims] 1. A new element related to seismic isolation of buildings. While firmly supporting the huge weight of the building. This element does not transmit the horizontal movement of the ground to buildings during an earthquake. Element is 2
It has a structure in which a fluid is arranged between two metal plates, and the surrounding is surrounded by a sealing material to protect the fluid from flowing out. 2. A composite type seismic isolation element. The upper and lower metal plates are paired with each other, and are sandwiched. This can withstand the pulling force