建筑物在爆破地震作用下的动力响应分析  

Dynamic Response Analysis of Structure under Blasting Seismic Signal

作　　者：胡坤伦[1] 吴礼齐 曹勇[1] 杨帆[1] 

机构地区：[1]安徽理工大学化学工程学院,淮南232001

出　　处：《爆破》2015年第4期149-152,161,共5页Blasting

基　　金：国家自然科学基金项目(51134012)

摘　　要：根据小波分析理论,通过db8小波进行小波分解得到各层级的重构信号,探究爆破地震波到达不同测点处动力响应的区别,以达到优化爆破设计参数的目的。通过对比建筑物内外测点监测结果可以得出:建筑物固有频率所在频带的信号出现一定的放大效应,有些距固有频率较远的频带波形表现出快速的衰减特性,爆破地震信号的低频成分在建筑物中的持续时间得到延长。According to the theory of wavelet analysis, the reconstructed wavelet signal of various levels can be received through wavelet decomposition by using db8 basic wavelet, then the different dynamic responses were detected when blasting seismic： signal arrived,which helps to achieve the optimized blasting design parameters. By comparing the analysis results of measuring point inside or outside the structure, the result indicates that the signals in the frequency band of the structureg natural frequency show amplification effect, and some other frequency bands located far from the natural frequency show rapid attenuation, and the low frequency component of blasting seismic signal last long in the structure.

关 键 词：小波分析 爆破地震波 动力响应 

分 类 号：O382[理学—流体力学]