摘要
在介绍时-频反应谱的基础上,提出归一化时-频反应谱,计算并对比分析了3条常用地震波的归一化时-频反应谱,推断了不同地震波可能对结构地震响应产生的不同影响。分析表明,归一化时-频反应谱有利于分析地震波的工程特性和结构的地震破坏机理,可以反映地震动持时对结构的累计破坏作用。
Based on the time-frequency response spectrum,this paper proposed the normalized time-frequency response spectrum.The time-frequency response spectra of three typical seismic waves are calculated and analyzed.The results show that the normalized time-frequency response spectrum can be used to analyze the engineering characteristics of seismic waves and the seismic damage mechanism of structures.And it can indicate the effect of duration of seismic wave on structural cumulative damage.
出处
《振动工程学报》
EI
CSCD
北大核心
2014年第1期91-95,共5页
Journal of Vibration Engineering
基金
国家自然科学基金资助项目(51078273)
关键词
地震波
时-频反应谱
归一化时-频反应谱
地震动持时
结构累积破坏
seismic waves
time-frequency spectrum
normalized time-frequency response spectrum
duration of seismic ground motion
structural cumulative damage
