External metal damper combined rubber shock insulation support and installation and maintenance method thereof

Abstract

The invention discloses an external metal damper combined rubber shock insulation support. The external metal damper combined rubber shock insulation support comprises a bottom connecting plate, a rubber support, a top connecting plate and a U-shaped metal damper, wherein the bottom connecting plate and the top connecting plate are fixed at the bottom and the top of the rubber support, and two free ends of the U-shaped metal damper are fixed at the edges of the top connecting plate and the bottom connecting plate. The U-shaped metal damper is external and easy to disassemble or add, and the rubber support can be repeatedly used, so that the rubber support is easy to design, produce and install. The damage of the U-shaped metal damper is easy to observe, the residual deformation of the rubber support can be reset after the U-shaped metal damper is disassembled, the maintenance difficulty is low, and the cost is low. The U-shaped metal damper can reduce the out-of-plane rigidity so as to decouple the rigidity of the U-shaped metal damper in two directions, so that the rubber support is easy to design and maintains isotropy, meanwhile, the stress level and damage accumulation of the U-shaped metal damper are reduced, the damage displacement and ductility of the rubber support are improved, and the energy dissipation capacity of a bending section is fully utilized.

Description

technical field [0001] The invention belongs to the technical field of seismic isolation of civil engineering structures, and in particular relates to an external metal damper combined with a rubber seismic isolation support and an installation and maintenance method thereof. Background technique [0002] With the continuous improvement of my country's structural seismic fortification level, seismic isolation technology has become more and more widely used, especially in lifeline projects such as hospitals, command centers, and crowded places such as schools and nursing homes. The application of seismic isolation bearings can reduce the seismic force response of the structure, reduce the structural earthquake damage, and protect the safety of important lives and property. [0003] The traditional seismic isolation bearings are mainly lead-core rubber isolation bearings. The lead-core rubber isolation bearings have initial stiffness, which can control the structural displacem...

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Problems solved by technology

[0004] However, there are also some disadvantages in the traditional lead rubber bearings, mainly including: firstly, the production, processing and use of metal lead will cause environmental pollution; secondly, the built-in method of the core column makes it difficult to observe the degree of deformation and damage of the lead core after the earthquake; thirdly , the residual deformation of the isolation layer is not easy to repair, and it needs to be pushed by an external force to reset; finally, if the support is damaged and needs to be replaced, the entire upper structure needs to be lifted, which is inconvenient for construction and has a long construction period

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