摘要
基于隔震系统对非比例阻尼动力响应的解偶效应,提出了可以计算任意多自由度体系时域动力响应的工程实用算法.引入一个实际隔震工程作为算例,在输入两种不同的地震波时,用本文算法计算地震响应,并与复振型分解法、双精度Fortran下的Wilson θ法及Matlab下的Simulink这三种方法的位移、速度和加速度时程曲线进行了对比,并分析了峰值响应误差.结果表明,本文算法与其它几种算法的时程曲线完全重合,当隔震阻尼比取值为设计阻尼水准时,具有良好的精度.
A practical engineering method for calculating time domain dynamic response of non-proportionally damped MDOF isolated structure is suggested, based on the response decoupling effect of isolation system. Taking a real isolated building as numerical example, the seismic response is calculated using this method, and the result is compared with those from complex mode super- position method, Wilson-θ method,and Simulink method in Matlab. The displacement,velocity, and acceleration response curves obtained from these four methods agree with each other very well, and the peak value response has high accuracy under design damping.
出处
《甘肃工业大学学报》
CAS
北大核心
2003年第4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)联合资助项目~~
关键词
隔震系统
解偶效应
地震波
地震响应
隔震结构
base isolation
non-proportional damping
structural control
dynamic analysis
