摘要
本文以小波变换和简谐地震反应的理论为基础,通过多分辨分析与线性调幅,推导了单自由度体系的地震瞬态反应计算公式,并结合反应谱的研究实现了地震瞬态反应的定量分析。研究结果表明,地震动可引起长周期结构很大的位移反应,且最大位移可能出现在结构的瞬态振动阶段,因而在抗震中不可忽略结构瞬态自由振动的影响。
Based on wavelet transform and harmonic earthquake response analysis, transient response as well as its response spectra of SDOF system are discussed by multi - resolution analysis and linear amplitude modulation. It is concluded that the transient response to a seismic signal can increase greatly in the displacement response of structures, particularly for the structures with long periods. Therefore, transient response should not be ignored in earthquake-resistant design.
出处
《水力发电学报》
EI
CSCD
北大核心
2007年第5期53-58,共6页
Journal of Hydroelectric Engineering
基金
高等学校博士学科点专项科研基金(20040386004)
关键词
振动与波
瞬态反应
多分辨分析
反应谱
地震
vibration ＆ wave
transient response
multi-resolution analysis
response spectra
earthquake
