中山大学学报（自然科学版）2018，Vol.57Issue(3)：164-171,8.DOI:10.13471/j.cnki.acta.snus.2018.03.022
基于脉冲响应函数和虚拟脉冲响应函数的挡土墙结构损伤诊断
Damage diagnosis of retaining wall structures based on impulse response function and virtual impulse response function
摘要
Abstract
To diagnose damages within retaining wall structures,based on impulse response function and virtual impulse response function,the damage feature vector spectrum was created and a damage identifi-cation index was proposed.Based on the damage feature vector spectrum and damage index,a damage diagnosis method for retaining wall structures was proposed.In order to verify the feasibility and validity of this damage diagnosis method,vibration tests on a pile plate retaining wall were performed under im-pulse excitation and ambient excitation,the damages within the wall were diagnosed via the damage fea-ture vector spectrum and damage index.The tests results show that the damage state of the wall can be sensitively distinguished by the damage feature vector spectrum,damage location of the wall can be valid-ly diagnosed through the damage index trend surface,and damage intensity of the wall can be quantitativelyidentified through the quantitative relationship between the damage index and damage intensity.Due to the influence of excitations,the stability of the damage index which is based on the impulse responsefunction is poor relatively under impulse excitation,while the stability of the damage index whichis based on the virtual impulse response function is much better under ambient excitation.关键词
挡土墙/损伤诊断/损伤指标/脉冲响应函数/虚拟脉冲响应函数Key words
retaining walls/damage diagnosis/damage index/impulse response function/virtual im-pulse response function分类
建筑与水利引用本文复制引用
徐乾,杨超,陈建功..基于脉冲响应函数和虚拟脉冲响应函数的挡土墙结构损伤诊断[J].中山大学学报（自然科学版）,2018,57(3):164-171,8.基金项目
国家自然科学基金(41602301) （41602301）
陕西省教育厅专项科学研究计划(17JK0157) （17JK0157）
陕西理工大学人才启动项目(SLGQD2017-4) （SLGQD2017-4）
