应力波小波域谱分析的岩土介质损伤诊断

英文篇名：Damage diagnoses of geotechnical media by analyzing wavelet-field spectra of stress wave
中文刊名：水利水运工程学报
英文刊名：Hydro-Science and Engineering
作者：曹茂森 ; 任青文
英文作者：CAO Mao-sen~(1 ; 2) ; REN Qing-wen~1(1. College of Civil Engineering ; Hohai University ; Nanjing210098 ; China ; 2. College of Hydraulic and Civil Engineering ; Shandong Agricultural University ; Taian271028 ; China)
中文关键词：小波分析 ; 应力波 ; 解析小波域能量密度谱 ; 实小波域模谱 ; 实小波域模极大谱 ; 时频表示 ; 损伤诊断 ; 岩土
英文关键词：wavelet analysis ; stress wave ; power density spectrum of analytical wavelet ; modulus spectrum of real wavelet field ; modulus maximum spectrum of real wavelet field ; time-frequency representation ; damage diagnose ; geotechnical
出版日期：2004-07-20
机构：河海大学土木工程学院,河海大学土木工程学院江苏南京　210098山东农业大学水利土木工程学院山东泰安　271028 ,江苏南京　210098
年：2004
期：03
出版单位：水利水运工程学报

摘要

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.

引文

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