摘要
利用小波变换将地震动加速度记录分解成若干小波分量,把每条小波分量当作一条"地震动加速度记录"和1栋七层钢筋混凝土框架结构进行作用,对各频段"地震动加速度记录"作用下结构能量反应进行分析。结果表明这些"地震动加速度记录"的总输入能之和与原始地震动加速度记录总输入能几乎相等,而各频段能量反应并不一样。这为今后找出结构能量反应与地震波频率特征、结构基本周期之间的定量关系开辟出一条捷径。
Wavelet transform was utilized to decompose an earthquake record into several wavelet components.Each wavelet component was treated as a earthquake record to be loaded on a 7 floors reinforced concrete frames.The structure energy response under each frequency bands of the earthquake wave was analyzed.The results indicated that the total input energy of these 'earthquake waves' and the primitive earthquake was nearly same,but the each frequency bands energy response was not similar.A shortcut was discovered for finding the quantitative relations between the structure seismic energy response,the seismic frequency characteristic,and the structure fundamental period in the future.
出处
《土木工程学报》
EI
CSCD
北大核心
2010年第S1期28-32,共5页
China Civil Engineering Journal
基金
国家自然科学基金(90715016)
安徽省自然科学基金(070415220)
关键词
正交小波变换
多分辨率分析
能量反应分析
地震波频率特征
orthogonal wavelet transform
multiresolution analysis
energy response analysis
seismic frequency characters
