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Isolation bearing capable of replacing limiting device

A technology of limiting device and vibration isolation, applied in bridge parts, bridges, buildings, etc., can solve the problem of inability to repair vibration isolation bearings in time, achieve the effect of ingenious structural design, ensure accurate control, and save replacement costs

Pending Publication Date: 2019-07-16
CHINA RAILWAY DESIGN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem in the prior art that the shock-absorbing and isolating support cannot be repaired in time after an earthquake, the present invention provides a replaceable shock-absorbing and isolating support with a limit device

Method used

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  • Isolation bearing capable of replacing limiting device
  • Isolation bearing capable of replacing limiting device
  • Isolation bearing capable of replacing limiting device

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Please see figure 1 , figure 2 , image 3 , which is a structural schematic diagram of a preferred embodiment of a replaceable shock-absorbing and isolating support for a position-limiting device in the present application. A replaceable shock-absorbing and isolating support for a position-limiting device includes a lower seat plate assembly 1, a middle seat plate assembly 2, Limiting device 3, upper seat plate combination 4, top seat plate combination 5. The lower seat plate combination 1 is composed of welded curved stainless steel on the lower seat plate, the middle seat plate combination 2 is composed of non-metallic slide plates inlaid on the upper and lower surfaces of the middle seat plate, and the upper seat plate combination 3 is made of welded stainless steel on the curved surface of the upper seat plate, and the plane is inlaid with non-metallic slide plates. Skateboard composition; top seat plate combination 5 is composed of welded flat stainless steel on...

Embodiment 2

[0042] Embodiment 2 has the same structure as Embodiment 1, the difference is that the limiting plate 7 has a rectangular shape as a whole, and the limiting device 3 is installed in four directions of the lower seat plate assembly 1 .

Embodiment 3

[0044] The structure of embodiment 3 is similar to that of embodiment 1, the difference is that in the gap between the screw part of the anti-pull screw II 10 and the cylindrical hole of the replacement plate 6, a shear thickening liquid is added, because the shear thickening liquid is slow When a force is applied, it is in a fluid state and can be deformed slowly. When subjected to a high-speed force, it is rigid and does not deform, thereby reinforcing the anti-pulling screw II 10, the replacement plate 6, and the lower seat plate assembly 1.

[0045] The preparation method of the shear thickening liquid of the present embodiment is to use nanoparticles such as nano-silica particles as the solid phase components of the shear thickening liquid, and use non-volatile liquid media such as ethylene glycol and polyethylene glycol and Volatile dilution solvents such as ethanol and ethyl acetate are prepared into a mixed solution. Under the action of stirring and ultrasonic dispersio...

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Abstract

The invention provides an isolation bearing capable of replacing a limiting device. The isolation bearing comprises a lower seat plate combination, a middle seat plate combination, the limiting device, an upper seat plate combination and a top seat plate combination, and the limiting device comprises a limiting plate, a replacing plate, a shearing pin, an anti-pull screw I and an anti-pull screw II. Through ingenious structural design, the shearing pin of the limiting device of the isolation bearing is only sheared by the horizontal force of the isolation bearing, and bending torque action formed by the horizontal force of the isolation bearing on the limiting plate is eliminated by the anti-pull screw I; in earthquake, the shearing pin is destroyed by shearing, thus the anti-pull screws are destroyed, the limiting plate loses limit action, the isolation bearing horizontally reciprocates and slides through the synthesis action of a hyperboloid, seismic capacity is dissipated through friction resistance of the sliding surface, the natural vibration period of the structure is prolonged, and thus the effect of isolation is achieved; and after the earthquake, the replacing plate can beextracted by screwing out the anti-pull screw II, the anti-pull screw II is screwed into the lower seat plate to achieve that the limiting device can be replaced on a bridge, and the replacement of the whole isolation bearing is not needed.

Description

technical field [0001] The invention relates to the technical field of bridges and building structures, in particular to a replaceable shock-absorbing and isolating support for a position-limiting device. Background technique [0002] Earthquake is one of the worst natural disasters suffered by human beings. Earthquake disasters are sudden and destructive, often causing serious disasters in a moment. my country is an earthquake-prone country, and a fairly large area is located in the Eurasian seismic belt and the circum-Pacific seismic belt. It is one of the most earthquake-prone countries in the world. Strong earthquakes will not only directly cause serious losses of human life and property, but secondary disasters will also cause serious casualties, economic losses and even social problems. For example, the destruction of lifeline engineering facilities will indirectly bring about greater disasters. The transportation system is extremely important for post-earthquake res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D19/04
CPCE01D19/04E01D19/042
Inventor 孙树礼宋建平王祯李恒跃苏伟李宇李新施威王勇
Owner CHINA RAILWAY DESIGN GRP CO LTD
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