滚动摩擦隔震结构实时拟动力试验数值积分方法  

Research on Numerical Integration Method in Real Time Pseudo-dynamic Test for Seismic Isolation Structure of Rolling Friction

作　　者：王静[1] 龚志方[1] 马俊涛[1] 张振凯[1] 葛楠[1] 

机构地区：[1]河北联合大学河北省地震工程研究中心,河北唐山063009

出　　处：《河北联合大学学报（自然科学版）》2012年第1期47-52,共6页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：河北省科技厅项目(11215120D)

摘　　要：推导了修正Newmark-β方法动力反应计算公式,用于对采用滚动摩擦隔震系统结构实时拟动力试验中非线性动力方程数值积分求解。将整体结构分为三部分:隔震子结构、试验子结构及计算子结构。对隔震子结构及试验子结构采用显式算法,而对计算子结构采用隐式算法,数值计算结果表明改进后的计算方法比显式算法的稳定性有所改善,降低了实时拟动力试验对数值计算稳定性的限制。The modified equations for PC-Newmark method were derived, which could be applied to the numerical solution process for the non-linear equation encountered in real time on-line test. The structure with FPS seismic iso- lation system was divided into three substructures, namely the FPS system, the experiment substructure and the computation substructure. The explicit algorithm is applied to the first two substructures and the implicit algorithm to the third one in order to loosen the stability limitation. The numerical solution for a 7 DOF structural model has proven the alleviation for stability requirement.

关 键 词：偏心辊轴摩擦摆 隐式算法 Newmark—β法 刚度矩阵 隔震 

分 类 号：TU311.3[建筑科学—结构工程]