A sma self-resetting shock-isolation bearing

Abstract

The invention discloses an SMA self-resetting shock-isolation bearing, which comprises an upper connecting plate, a lower connecting plate, laminated rubber, a connecting piece, a dog-bone-shaped SMA rod, a steel chain with a connecting block, an eye nut, an upper connecting plate and There are bolt holes on the lower connecting plate, the laminated rubber is placed in the middle of the upper connecting plate and the lower connecting plate, and the upper connecting plate and the lower connecting plate are connected by bolts, the connecting parts are connected with the lower connecting plate through bolts, and the lower connecting plate is placed , the dog-bone-shaped SMA rod is connected to the connecting piece on the lower connecting plate through threads, the other end is connected to the steel chain with connecting block, the other end of the steel chain is connected to the eye nut on the upper connecting plate, and SMA rods are arranged on both sides of the support. Rods and steel chains, but not limited to the arrangement on both sides, each side has two SMA rods and steel chain combinations, and the overall SMA rod and steel chain combination presents an X-shaped distribution. The invention can improve the shock isolation effect of the structure and reduce the loss after the earthquake.

Description

technical field [0001] The invention belongs to the field of earthquake prevention and disaster reduction of civil engineering, and is a shock-isolation component applied in the field of structure and bridge engineering. Based on SMA rods, it has good energy consumption capacity and self-resetting performance. Background technique [0002] Earthquakes have been a difficult problem faced by human beings since ancient times. Its arrival is not only accompanied by huge property losses, but also brings serious danger to people's lives. With the development of earthquake engineering, for the protection of buildings, people have developed from the traditional hard resistance to the current shock absorption and isolation technology. Among them, the damping system increases the natural vibration period of the structure due to the reduction of the stiffness of the seismic isolation layer, and reduces the displacement and acceleration response of the upper structure from a small size,...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of relatively large residual deformation and poor self-resetting ability of existing seismic isolation bearings, poor protection effect of acceleration-sensitive and speed-sensitive components under small earthquakes, or excessive horizontal deformation of the isolation layer under major earthquakes, the present invention A SMA self-resetting seismic isolation bearing is proposed to enhance the structure's ability to resist earthquakes and reduce post-earthquake losses

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