Tin core laminated rubber bearing seat for base isolation

Abstract

The invention discloses a tin core laminated rubber bearing seat for base isolation. The tin core laminated rubber bearing seat for the base isolation is characterized in that the tin core laminated rubber bearing seat comprises a body, an upper connecting steel plate and a lower connecting steel plate, a rubber protecting layer adheres to the side surfaces of the body, the upper connecting steel plate and the lower connecting steel plate are fixed on the body through screws, the body comprises a tin core stick, an upper sealing plate, a lower sealing plate and a laminated body, the laminated body is located between the upper sealing plate and the lower sealing plate and formed by sequentially alternating lamination of strengthening steel plates and rubber plates, and the tin core stick sequentially penetrates the upper sealing plate, the laminated body and the lower sealing plate. Compared with tin core laminated rubber bearing seats in the prior art, the tin core laminated rubber bearing seat for the base isolation has the advantages that the tin core laminated rubber bearing seat is high in bearing capacity, damping, horizontal displacement capacity and restoration capacity; moreover, tin reserve is large in China; compared with existing common lead core laminated rubber bearing seats, the tin core laminated rubber bearing seat can achieve all mechanical performances of the lead core laminated rubber bearing seats, the melting point of tin is close to that of lead, and tin is free of toxicity.

Description

technical field [0001] The invention relates to a tin core laminated rubber bearing used for base shock isolation, belonging to the technical field of civil engineering. Background technique [0002] In recent years, seismic isolation technology has been vigorously promoted in our country. No matter in building structures, bridge structures or other structures with special requirements, seismic isolation technology has become more and more mature, and more and more attention has been paid to it. Demand is also rising. [0003] At present, lead-core laminated rubber bearings are still a relatively mature and widely used shock-isolation bearing. It inserts lead cores in the center of ordinary laminated rubber bearings to improve the damping performance of rubber bearings. In addition to bearing the gravity and horizontal force of the structure, the plastic deformation of the lead core can also absorb energy and provide horizontal restoring force through the rubber. [0004] ...

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Problems solved by technology

[0004] However, the lead core material itself is a toxic metal, which is very harmful to environmental pollution and human health. With the strengthening of environmental protection awareness and the increase of capital investment in the engineering field in recent years, it is very necessary to develop new substitutes of

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