A self-resetting lead rubber shock-isolation bearing

Abstract

The invention discloses a self-resetting lead rubber isolation bearing, and belongs to the technical field of building and bridge isolation, comprising an upper connecting plate, a lower connecting plate, a sliding support cylinder and a lead rubber bearing; the lead rubber isolation bearing comprises an upper connecting plate, a lower connecting plate, a sliding support cylinder and a lead rubberbearing. A low surface of that upper connecting plate is fixedly provided with a sliding plate and has a curved surface protruding downward; A low part of that sliding support cylinder is fixedly connecting with a lower connecting plate, and an upper part is slidably connected with a curved surface of the sliding plate; A low part of that lead rubber support is fixedly connecting with a lower connecting plate, and an upper connecting plate of the lead rubber support is fixedly arrange on the upper part; An inn horizontal force transmission ring is fixedly arranged on that sliding plate, and an outer horizontal force transmission ring is fixedly arranged on the connecting plate on the lead rubber bearing, and the inner horizontal force transmission ring is nested inside the outer horizontal force transmission ring, and the inner horizontal force transmission ring and the outer horizontal force transmission ring can vertically slide relative to each other. Lead rubber is not affected byvertical tensile and compressive loads, has good stability, fully exerts its horizontal energy dissipation capacity, and has good self-resetting function of the isolation bearing, thereby integrallyimproving the safety performance and the seismic resistance of the invention.

Description

technical field [0001] The invention relates to the technical field of building and bridge shock isolation, in particular to a self-resetting lead rubber shock-isolation bearing. Background technique [0002] my country is located between the circum-Pacific seismic belt and the Eurasian seismic belt, and is one of the earthquake-prone countries. Strong earthquakes can cause damage or even collapse of a large number of building structures and bridge structures. In high-intensity areas, it is difficult to ensure the safety of structures only relying on the structure's own seismic resistance. The emergence of seismic isolation devices provides a new method for the seismic design of building structures and bridge structures, and its effectiveness has been tested by actual projects. As a traditional seismic isolation device, lead rubber bearings have been widely used due to their good stability and durability. [0003] Although the traditional lead rubber bearing is simple in ...

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Problems solved by technology

[0005] 2. Rubber has good compressive strength, but weak tensile strength

Under the action of vertical earthquake, the lead rubber bearing may be subjected to tensile force, which will lead to tensile failure of the bearing

[0006] 3. Under greater pressure, the reset ability of the lead rubber bearing may be insufficient, resulting in excessive residual deformation of the upper structure

[0007] 4. The lead rubber bearings in the prior art are exposed to various harsh environments for a long time, and are prone to natural damage such as collision, temperature difference, corrosion, etc., and have poor durability

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