沈阳工业大学学报2013，Vol.35Issue(4)：469-474,6.DOI:10.7688/j.issn.1000-1646.2013.04.19
基于静态离散小波变换的地震动时程调整
Ground motion time-history modulation based on stationary discrete wavelet transform
摘要
Abstract
In order to solve the problem that there exsits more interference of human factors in simulating the ground motion time-history with harmony superposition method and the simulated ground motion time-history has no non-stationary frequency characteristics,a ground motion time-history modulation method based on stationary discrete wavelet transform was proposed.With the stationary discrete wavelet transform,the history record of ground motion time-history was decomposed onto different frequency bands.Through comparing the target response spectrum for different frequency bands with the calculated ground motion time-history response spectrum on the corresponding frequency band,the iteration and modification of wavelet coefficients with various scales were performed,and then a new ground motion time-history record was reconstructed.Through compiling the program and performing the example verification,it is found that the poposed method is correct and feasible.The modulated ground motion time-history can not only be consistent with the target response spectrum,but also maintain its original characteristics well.关键词
小波变换/静态离散小波变换/地震动时程/谐波叠加法/反应谱/非平稳特性/随机过程/地震动模拟Key words
wavelet transform/stationary discrete wavelet transform/ground motion time-history/harmony superposition method/response spectrum/non-stationary characteristic/stochastic process/ground motion simulation分类
建筑与水利引用本文复制引用
白泉,付亮华,鲍文博,金生吉..基于静态离散小波变换的地震动时程调整[J].沈阳工业大学学报,2013,35(4):469-474,6.基金项目
国家自然科学基金资助项目(51204029) （51204029）
辽宁省科技厅基金资助项目(20101076) （20101076）
沈阳工业大学博士启动基金资助项目. （）
