A METHOD OF ONLINE DAMAGE IDENTIFICATION FOR STRUCTURES BASED ON AMBIENT VIBRATION  

作　　者：姚志远 汪凤泉 赵淳生 

机构地区：[1]Research Center of Ultrasonic Motors, Nanjing University of Astronautics and Aeronautics, Nanjing 210016, P.R.China [2]Department of Engineering Mechanics, Southeast University, Nanjing 210096, P.R.China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2005年第2期269-276,共8页应用数学和力学（英文版）

基　　金：theNationalNaturalScienceFoundationofChina ( 597750 2 2 )

摘　　要：A method of damage identification for engineering structures based on ambient vibration is put forward, in which output data are used only. Firstly, it was identification of the statistic parameters to associate with the exterior excitation for undamaged structures. Then it was detection and location of the structural damages for damaged structures. The ambient identification method includes a theoretical model and numerical method. The numerical experiment results show the method is precise and effective. This method may be used in health monitoring for bridges and architectures.A method of damage identification for engineering structures based on ambient vibration is put forward, in which output data are used only. Firstly, it was identification of the statistic parameters to associate with the exterior excitation for undamaged structures. Then it was detection and location of the structural damages for damaged structures. The ambient identification method includes a theoretical model and numerical method. The numerical experiment results show the method is precise and effective. This method may be used in health monitoring for bridges and architectures.

关 键 词：damage identification parameter identification online identification technique health monitoring technique 

分 类 号：TU311.3[建筑科学—结构工程]