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基于超弹性SMA螺旋弹簧的基础隔震研究

DOI: 10.13197/j.eeev.2014.02.209.huangb.028, PP. 209-215

Keywords: 基础隔震,超弹性SMA螺旋弹簧,动力本构关系,振动台,结构响应

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Abstract:

本文提出了一个由超弹性形状记忆合金(SMA)螺旋弹簧和滑动支座组成的新型基础隔震系统。利用SMA螺旋弹簧的一系列加卸载试验,建立了SMA螺旋弹簧在反复荷载作用下的力位移动力本构关系的现象模型。在此基础上给出了一个两层的隔震钢结构框架的数值仿真模型,并通过多组地震动激励试验验证了该数值模型的有效性。数值结果表明,和普通钢弹簧的隔震系统比较,所提出的基础隔震系统具有更好的隔震效果,并可显著地抑制结构的振动。

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