罕遇地震荷载作用下屈曲约束支撑框架结构弹塑性位移的简化计算方法  

A simplified calculation method for solving elasoplastic displacement of a buckling-restrained braced frame under severe earthquakes

作　　者：胡宝琳[1] 姚文娟[1] 李国强[2] 

机构地区：[1]上海大学土木系,上海市应用数学与力学研究所,上海200072 [2]同济大学土木工程学院,上海200092

出　　处：《振动与冲击》2011年第2期144-148,共5页Journal of Vibration and Shock

基　　金：上海市博士后资助项目(10R21413000)

摘　　要：针对罕遇地震荷载作用下的屈曲约束支撑框架结构,从附加有效阻尼比的角度出发,系统的分析了罕遇地震时,屈曲约束支撑框架结构体系弹塑性位移的简化求解方法,并将此简化求解方法的计算结果与十条地震波的弹塑性时程分析结果平均值进行对比,结果表明,该简化算法准确有效。Aiming at a buckling-restrained braced frame under severe earthquakes,using additional effective damping ratio and energy principle,a simplified calculation method to solving its elastic-plastic displacement was systematically analyzed.Here,the detailed calculating method and steps were presented.Moreover,the comparison analysis between the result of the simplified calculation method and the mean of the results of ten seismic waves＇ elastoplastic time-history analyses was carried out.It was shown that the simplified calculation method is a correct and effective one.

关 键 词：屈曲约束支撑框架 罕遇地震 层间位移 简化算法 

分 类 号：TU973.31[建筑科学—结构工程]