Anti-drawing self-resetting composite shock insulation support

Abstract

The invention discloses an anti-drawing self-resetting composite shock insulation support which comprises a shock insulation support composed of a lead core, a rubber shock insulation pad, an upper support steel plate and a lower support steel plate and an anti-drawing self-resetting mechanism arranged on the periphery of the shock insulation support, and the anti-drawing self-resetting mechanism comprises an upper connecting plate, a lower connecting plate and a hyperelastic shape memory alloy screw. The upper connecting plate is fixed on the upper support steel plate, and the lower connecting plate is fixed on the lower support steel plate; a parallel long round hole parallel to the side line is formed in the upper connecting plate, and a vertical long round hole perpendicular to the side line is formed in the lower connecting plate; the two ends of the hyperelastic shape memory alloy screw are connected into the parallel long round holes and the vertical long round holes in a sliding or rolling mode. The composite shock insulation support has good horizontal shock insulation and vertical tensile capacity, when the composite shock insulation support is subjected to vertical tensile force, the hyperelastic shape memory alloy screws are pulled, the vertical limiting effect is achieved, and the overturning problem occurring when a high-rise building adopts the shock insulation support is effectively solved.

Description

technical field [0001] The invention relates to the technical field of engineering shock isolation, in particular to a pullout-resistant self-resetting composite shock-isolation support. Background technique [0002] Seismic isolation technology is an effective means to improve the seismic capacity of structures (buildings, bridges, etc.). The seismic energy of the structure to reduce the damage or damage to the structure caused by the earthquake. At present, there are three types of existing isolation bearings: rubber isolation bearings, friction isolation bearings, and elastic or rigid sliding bearings, among which rubber isolation bearings are the most widely used and most mature technology. It has the characteristics of clear shock absorption mechanism, large horizontal deformation capacity, and convenient construction and installation. However, since the interior of the rubber isolator is bonded and connected between the laminated rubber and the stiffened steel plate,...

AI Technical Summary

Problems solved by technology

However, due to the adhesive connection between the laminated rubber and the stiffened steel plate inside the rubber isolator, the vertical tensile capacity of the rubber isolator is weak

If the high-rise building structure adopts rubber isolation bearings, when subjected to vertical earthquake action or large horizontal shear deformation, the rubber isolation bearings are prone to tension, and the weak adhesive force between the rubber layer and the stiffened steel plate cannot resist Vertical tension causes damage to the seismic isolation bearing, which causes the building structure to overturn and collapse

In addition, under rare earthquakes, the large horizontal shear deformation of the rubber isolator will cause serious damage to the rubber isolator, which will bring a lot of repair costs to the restoration of the structure after the earthquake.

The weak tensile capacity of rubber isolation bearings and the failure under rare earthquakes have affected the promotion and application of existing isolation technologies in structures, and have also limited the development of structures in high-intensity earthquake areas.

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