Shaketable Test of Seismic Isolation Structure Based on SMA Wire-Laminated Rubber Combined Bearings

Abstract eng:
Aiming at the low horizontal lateral stiffness and restoring force, taking advantage of hyperelastic property of shape memory alloys (SMA for short), a new type of SMA wire-laminated rubber combined bearings is developed by fixing SMA wire diagonally around conventional laminated rubber bearings. Through comparison test on seismic simulation shaketable, analysis is made on effects and rules of displacement amplitude of isolation layer on seismic isolation basic parameters of SMA wire-laminated rubber combined bearings such as unit cycle energy consuming, equivalent horizontal stiffness, maximum restoring force, and equivalent damp ratio. Favorable seismic isolation property of SMA wire-laminated rubber combined bearings is verified.

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