土木工程与管理学报2016，Vol.33Issue(6)：12-15,21,5.
基于统计小波包能量分布的结构健康状况预警
Structural Health Alarming Based on Statistical Wavelet Packet Energy Distribution
摘要
Abstract
It is a very important research topic to identify structural characteristic information from mass data collected by health monitoring system and extract damage index used for health alarming. By combing natural excitation technique (NExT)and wavelet packet analysis,the cross-correlation function of structure dynamic response under ambient excitation was analyzed using wavelet packet, and then two structural alarming indices based on wavelet packet energy distribution were proposed. For deceasing the influence of noise and randomness of signal,a convergence analysis of alarming indices was carried out using statistical method,so the base value and early warning threshold value of alarming indices in health status were confirmed. The proposed as method was used as health alarming of Wuhan Yangluo Changjiang River Bridge. The result indicates the proposed method can be effectively used to health condition alarming.关键词
小波包分析/健康预警/小波包能量/环境激励/结构损伤/统计分析Key words
wavelet packet analysis/health alarming/wavelet packet energy/ambient excitation/structural damage/statistical analysis分类
交通工程引用本文复制引用
王超,黄彩萍,艾德米,朱宏平..基于统计小波包能量分布的结构健康状况预警[J].土木工程与管理学报,2016,33(6):12-15,21,5.基金项目
国家自然科学基金青年基金（51408250）；湖北工业大学博士科研启动基金 （）
