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SMA自复位隔震桥梁基于位移的抗震设计方法

DOI: 10.13197/j.eeev.2015.01.215.liujl.026, PP. 215-222

Keywords: 隔震桥梁,模型简化,非线性反应谱,位移设计方法

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Abstract:

本文针对隔震桥梁结构的抗震设计方法展开研究。首先对隔震桥梁结构进行模型简化,得到可用于设计的精简模型,并通过合理的构造设计,得到可实用的SMA隔震层;经过推导得到简化模型的等效延性和刚度;在非线性反应谱的基础上,建立直接基于位移的抗震设计方法;最后通过数值模拟分析对设计方法进行验证,结果显示在设计地震作用下,桥梁的地震反应与预期的设计指标相差很小,说明该位移设计方法具有较好的可靠性。

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