用拉普拉斯变换方法求解非比例阻尼隔震结构
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摘要
将基础隔震结构用双自由度振动体系模拟,在建立振动运动方程时考虑振动系统非比例 阻尼效应,用小参数展开法导出了体系动力特性的近似解析解,用拉普拉斯变换方法获得该 种隔震结构地震时域响应的积分解,并在数值算例中分析了等代体系动力特性及地震响应计 算结果的精度.
:The base-isolated struc ture is simulated with a 2-DOF vibration system, and the equation of motion is established by way of considering the non-proportional damping effect. An a pproximate ana lytical solution of the dynamic characteristics of the system is derived by usin g small parameter extension method, and the time-domain earthquake response of the isolated structure is obtained on the basis of Laplace transform method. The accuracy of the dynamic characteristics and response results of the system is a nalyzed through a numerical example at the end of the paper.
引文
[1] Skinner R I著.工程隔震概论[M].谢礼立,译.北京:地 震出版社,1996.
    [2] 杜永峰,狄生奎,尹维祥,等.隔震结构等代体系动力响应的小参数逼近解法[J ].甘肃工业大学学报,2000,26(2):72~77.
    [3] Clough R W, Penzien J. Dynamics of strctures[M]. 2nd ed. New York: McG raw-Hill,1993.
    [4] Kelly J M. The Role of damping in seismic isolation[J]. Earthq Engrg a nd Struc Dyn, 1999, 28(1): 3~20.
    [5] 黄宗明,白绍良,赖明.结构地震反应时程分析中的阻尼问题评述[J].地震工程 与工程振动.1996,16(2):95~105.
    [6] Paz M. Structural dynamics—theory and computation[M]. 2nd ed. New Yor k:Reinhold Press. 1994.
    [7] 杜永峰, 许铁生.多层隔震框架多自由度体系的解耦动力分析[J].甘肃工业大 学学报,1996,22(1):94~100.

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