摘要
小波变换是一个优越的时-频局部化分析方法,能够对信号进行任意精细程度分析,识别信号中的突变点或间断点。基于高拱坝坝体的变形应用小波分析对坝体裂缝进行损伤位置识别,提出小波变换系数残差作为整体损伤指标,给出了该方法的的基本原理和计算思路。以某高拱坝有限元模拟数据为例,分析结果表明小波变换在高拱坝裂缝损伤分析方面具有较好的的实用性和操作性。
The wavelet transform is an excellent time-frequency localization analysis method,which could make analysis for any fine degree of signal to identify the point mutations or discontinuities in the signal.Based on the deformation of high arch dam and by using wavelet analysis to make the damage location identification of cracks in dam body,the wavelet transform coefficient residual is proposed as the whole damage index,and the basic principles and calculation idea of the method are given here.Taking the finite element simulation data of a high arch dam for example,the analysis results show that the wavelet transform has better availability and operability in the crack damage analysis of high arch dam.
出处
《水利与建筑工程学报》
2012年第1期69-72,共4页
Journal of Water Resources and Architectural Engineering
关键词
小波分析
高拱坝
损伤
wavelet analysis
high arch dam
damage
