土-结构动力相互作用(SSI)分析基本步骤探讨
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摘要
结构抗震分析中对土-结构动力相互作用(SSI)的研究已有半个世纪的历史,目前已形成了共识:在结构抗震设计中SSI的影响效应不可忽视。但在一般的工程设计中,由于SSI的考虑比较复杂而被近似处理。本文基于大型通用商业软件ANSYS以及基本的SSI分析理论,以某一单层框架结构为例,详细介绍了SSI分析的基本步骤及关键点,计算了不考虑SSI和考虑SSI时结构的自振频率和地震响应,对比分析了SSI效应对结构动力特性和地震相应的影响规律。研究成果可供工程设计人员在进行考虑SSI效应的结构抗震设计时参考使用。
引文
[1]Lysmer J.M.and Richart F.E.Dynamic response of footingsto vertical loading[J].Soil Mechanics and Foundations Division,1966,92(SM1):65-91.
[2]Richart F.E,Hall J.R.and Woods R.D.Vibrations of soils and foundations[M].Englewood cliffs,New Jersey,Prentice Hall Inc.1970.
[3]Dominguez J.and Roesset J.M.Dynamic stiffness of rectangular foundations[R].Research report,R78-20,MIT,1978.
[4]Artur Pais and Eduardo Kausel.Approximate formulas for dynamic stiffness of rigid foundations[J].Soil Dynamics and Earthquake Engineering,1988,7(4):213-227.
[5]Veletsos A.S.and Verbic B.Vibration of viscoelastic foundations[J].International Journal of Earthquake Engine ering and Structure Dynamics,1973,2:87-102.
[2]Richart F.E,Hall J.R.and Woods R.D.Vibrations of soils and foundations[M].Englewood cliffs,New Jersey,Prentice Hall Inc.1970.
[3]Dominguez J.and Roesset J.M.Dynamic stiffness of rectangular foundations[R].Research report,R78-20,MIT,1978.
[4]Artur Pais and Eduardo Kausel.Approximate formulas for dynamic stiffness of rigid foundations[J].Soil Dynamics and Earthquake Engineering,1988,7(4):213-227.
[5]Veletsos A.S.and Verbic B.Vibration of viscoelastic foundations[J].International Journal of Earthquake Engine ering and Structure Dynamics,1973,2:87-102.
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