Damage detection test of a substructure model of the National Swimming Center  

作　　者：QIAN JiaRu JI XiaoDong ZHANG WeiJing XU LongHe FU XueYi GU Lei 

机构地区：[1]Key Laboratory for Structural Engineering&Vibration of Education Ministry,Department of Civil Engineering,Tsinghua University,Beijing 100084,China [2]China State Construction International Design Consultant Co.LTD.,Beijing 100029,China

出　　处：《Science China(Technological Sciences)》2008年第7期940-948,共9页中国科学（技术科学英文版）

基　　金：Beijing Natural Science Foundation (Grant No. 8041002);the National Natural Science Foundation of China (Grant No. 8041002);the National Science and Technology Committee of China (Grant No. 2004BA904B02);Beijing Science and Technology Committee (Grant No. Z0004028040221)

摘　　要：In order to detect the damage locations of complex spatial structures, a sensor region-based damage detection approach was developed based on the damage locating vectors method. A normalized damage locating index was introduced to identify the damage regions. An experiment on damage detection of a substructure model of the National Swimming Center 'Water Cube' was carried out. Two damage patterns were involved in the experiment. The test model was excited by using hammer impacts. Acceleration responses of the undamaged and damaged structure model were measured. Modal parameters were identified from the acceleration responses by utilizing the eigensystem realization algorithm (ERA). By using the developed sensor region-based method, the damage regions of the substructure model were located. The results show that the proposed method is able to effec- tively locate the damage regions.In order to detect the damage locations of complex spatial structures, a sensor region-based damage detection approach was developed based on the damage locating vectors method. A normalized damage locating index was introduced to identify the damage regions. An experiment on damage detection of a substructure model of the National Swimming Center ‘Water Cube’ was carried out. Two damage patterns were involved in the experiment. The test model was excited by using hammer impacts. Acceleration responses of the undamaged and damaged structure model were measured. Modal parameters were identified from the acceleration responses by utilizing the eigensystem realization algorithm (ERA). By using the developed sensor region-based method, the damage regions of the substructure model were located. The results show that the proposed method is able to effectively locate the damage regions.

关 键 词：structure vibration DAMAGE detection sensor REGION SUBSTRUCTURE model of the NATIONAL SWIMMING CENTER experiment 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]