地震动中控制钢筋混凝土框架非线性响应的小波分量  

The dominant wavelet components of earthquake excitation for the nonlinear responses of reinforced concrete frames

作　　者：曹永红[1] 曹晖[1] 李英民[1] 

机构地区：[1]重庆大学土木工程学院,重庆400045

出　　处：《地震工程与工程振动》2008年第4期106-110,共5页Earthquake Engineering and Engineering Dynamics

基　　金：重庆市自然科学基金项目(CSTC2005BB0041);教育部留学回国人员科研启动基金资助项目(教外司留2005331)

摘　　要：采用小波变换将地震加速度记录分解为若干小波分量,通过两榀钢筋混凝土框架在这些小波分量及其不同组合作用下的非线性动力分析,找出对框架非线性响应影响最大的小波分量。结果表明,控制框架非线性响应的小波分量为最靠近框架基本周期的低频小波分量,在为结构非线性响应分析遴选地震动记录时应注意这种特点。Wavelet transform was utilized to decompose an earthquake acceleration record into several wavelet components. Nonlinear transient analyses were carried out for two reinforced concrete frames under excitations of combinations of wavelet components. It is found that the wavelet components which dominate the structural nonlinear responses are the components with low frequencies near the fundamental frequencies of the frames. Attention should be paid to this characteristic when the records are selected for structural nonlinear transient analysis

关 键 词：钢筋混凝土框架 非线性分析 小波变换 小波分量 

分 类 号：P315.962[天文地球—地震学]