隔震结构动力时程响应的一种工程实用算法  

A practical engineering method for calculating dynamic time history response of construction with seismic isolation

作　　者：杜永峰[1] 李慧[1] B.F.Spencer Jr 白莉[1] 张丽娟[1] 

机构地区：[1]兰州理工大学防震减灾研究所,甘肃兰州730050 [2]美国伊利诺伊大学土木与环境工程系,伊利诺伊厄巴纳61801

出　　处：《甘肃工业大学学报》2003年第3期103-106,共4页Journal of Gansu University of Technology

基　　金：美国国家自然科学基金(CMS99 00234);甘肃省建设科技攻关基金 (JK99 0 7)资助~~

摘　　要：对非比例阻尼体系动力响应的时域一般解答做了简介,分析了非比例阻尼隔震体系在阻尼耦联及频域响应方面的特点,提出了任意多自由度体系时域动力响应的一种工程实用算法.并通过实际隔震工程算例的结果对比,表明本文算法与复振型分解法、双精度Fortran下的Wilson θ法及Matlab下的Simulink这3种方法几种算法的时程曲线完全重合.A brief introduction is made to the general solution of dynamic time domain response of nonproportionally damped seismic isolation system. The characteristics of damping coupling and frequency response of such system is analysed, and a practical engineering method is suggested for calculating dynamic time domain response of nonproportionally damped MDOF isolated structure. Taking a real seismic isolation building as engineering illustration, the seismic response is calculated using the method suggested in this paper, and the results are compared with those from complex mode super position method, Wilsonθ method, and Simulink method in Matlab. The displacement, velocity and acceleration time history response curves obtained from the four different methods agree very well with each other.

关 键 词：隔震结构 动力时程响应 工程算法 非比例阻尼 阻尼耦联 复振型闭合解 拉普拉斯变换 

分 类 号：TU352.12[建筑科学—结构工程]