Novel high-damping rigidity-variable extruding type earthquake isolation device

Abstract

The invention discloses a novel high-damping rigidity-variable extruding type earthquake isolation device and relates to the technical field of structural earthquake isolation. The device comprises anupper cover plate, an upper clapboard, a groove, a graphene-polyvinyl chloride composite material layer, an upper concave extruding block, a composite high-damping material layer, a lower convex extruding block, a rigidity-variable cylinder and a lower bottom plate. Compared with a traditional rubber support earthquake isolator, the device disclosed by the invention has the advantages that when the earthquake displacement is smaller, the rigidity and the damping energy consumption property are lower, and along with the increase of the displacement, the upper concave extruding block and the lower convex extruding block extrude a chlorinated butyl rubber-phenolic resin composite high-damping material, so that the damping energy consumption property is increased and the extruding type earthquake isolation energy consumption capability is enhanced; and when the earthquake displacement is larger, the rigidity and the damping energy consumption property are maximum, the upper cover plate drives the rigidity-variable cylinder to work together, and the STG in the rigidity-variable cylinder changes the rigidity of the earthquake isolation device, wherein the composite high-damping materialincreases the damping energy consumption property.

Description

technical field [0001] The invention mainly relates to the technical field of structural shock isolation, and relates to a novel high-damping variable-rigidity extruded shock-isolation device based on rubber and shear-thickening materials for vibration isolation. Background technique [0002] As people pay more and more attention to building isolation technology, building isolation rubber bearings have become an integral part of most isolation devices, which can absorb seismic energy through deformation during an earthquake and play a role in isolation. The high damping rubber bearing is one of the seismic isolation rubber bearings. It has high damping and can realize the dual function of energy dissipation and isolation in the seismic response. [0003] Compared with ordinary natural rubber, high damping rubber has high damping performance. Adding phenolic resin to the rubber can increase the damping property of the rubber material, which helps to reduce the resonance ampl...

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Problems solved by technology

[0006] Aiming at the problems existing in the prior art, the present invention proposes a novel high-damping and variable-stiffness extrusion-type shock-isolator, which overcomes the fixed horizontal stiffness of the traditional rubber bearing shock-isolator, low damping energy dissipation performance, and shear-type shock-isolation The defect of weak energy dissipation capacity; through the cooperative work of the variable stiffness isolation part and the annular chlorinated butyl rubber-phenolic resin composite high damping material extrusion isolation part, it can have high horizontal damping under earthquakes of different magnitudes variable stiffness properties

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