应力波小波域谱分析的岩土介质损伤诊断

Damage diagnoses of geotechnical media by analyzing wavelet-field spectra of stress wave

将小波分析理论与岩土介质损伤诊断相结合,提出了解析小波域能量密度谱、实小波域模谱和实小波域模极大谱三谱相辅的应力波小波域谱分析岩土介质损伤诊断的思路.在对Cmorlet和DoG小波及其变换性质分析后,将两小波联合,进而发展了新颖而有效的岩土介质损伤诊断技术,应用于地下水泥土连续墙的损伤诊断结果表明,该方法有效可行.

A strategy of making use of the analyses of stress wave spectra including power density spectrum of analytical wavelet field, modulus spectrum of real wavelet field and modulus maximum spectrum of real wavelet field to diagnose damages of geotechnical media is proposed by applying wavelet theory into damage diagnoses of geotechnical media. After analyses of the properties of Cmorlet wavelet and DoG wavelet and their transformation characteristics, a novel and effective damage diagnose routine to implement the proposed strategy is developed by combining the advantages of above two wavelets. Damage diagnose results of a continuous subsurface cement-soil wall show that this method is effective and feasible.