求解结构动力响应的小波分解法  

Wavelet decomposition method for solution to structural dynamic response

作　　者：周瑞忠[1] 吴琛[1] 周小平[1] 

机构地区：[1]福州大学土木建筑工程学院,福建福州350002

出　　处：《地震工程与工程振动》2005年第6期43-48,共6页Earthquake Engineering and Engineering Dynamics

基　　金：教育部博士点专项基金项目(20040386004)

摘　　要：本文用时程分析、振型迭加和小波变换3种方法,对一个10层建筑结构的地震动力响应进行了计算和比较,三者的结果完全一致,从而说明了线性时不变系统结构动力响应的唯一性定律是正确的。由于时程分析法可以用于非线性系统,而振型分解法只能用于线性系统,小波变换不但可以用于非线性,更可以用来进行多尺度分析的能谱计算,它能使抗震分析从传统的滞回耗能模型,提高到以结构损伤和延性评价的体系上来。The structural dynamic response of a ten-floor building is calculated and compared using time-history analysis, modal superposition and wavelet transform. Three results are consistent completely and the uniqueness of structural dynamic response for linear timeinvariant system is verified. Time-history analysis can be used in nonlinear system, while model superposition can only be applied to linear system. Wavelet transform can be adopted in nonlinear system as well as in calculating multi-resolution energy spectrum. It develops seismic analysis from traditional model of hysteretic energy to a system for structural damage and ductility estimate.

关 键 词：时程分析 振型迭加 小波变换 线性时不变系统 动力响应 

分 类 号：TN911.7[电子电信—通信与信息系统]