Damage identification method of girder bridges based on finite element model updating and modal strain energy

作     者：NIU Jie ZONG Zhou Hong CHU Fu Peng 

作者机构：School of Civil Engineering Southeast University Vibration Engineering Section College of Engineering Mathematics and Physical Sciences University of Exeter Fujian Academy of Building Research 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2015年第58卷第4期

页      面：701-711页

核心收录：

学科分类：081406[工学-桥梁与隧道工程] 08[工学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：The National Natural Science Foundation of China(Grant Nos.51178101 and 51378112) The University Graduate Student Scientific Research Innovation Plan of Jiangsu Province(Grant No.CXZZ13_0109) China Scholarship Council under Program for Graduate Student Overseas Study Scholarship 

主　　题：damage identification response surface model finite element model updating element modal strain energy damage index girder bridge 

摘      要：A timely and accurate damage identification for bridge structures is essential to prevent sudden failures/collapses and other catastrophic *** on response surface model(RSM)updating and element modal strain energy(EMSE)damage index,this paper proposes a novel damage identification method for girder bridge *** effectiveness of the proposed damage identification method is investigated using experiments on four simply supported steel *** Xiabaishi Bridge,a prestressed continuous rigid frame bridge with large span,as the engineering background,the proposed damage identification method is validated by using numerical simulation to generate different bearing damage ***,the efficiency of the method is justified by considering its application to identifying cracking damage for a real continuous beam bridge called Xinyihe *** is concluded that the EMSE damage index is sensitive to the cracking damage and the bearing *** locations and levels of multiple cracking damages and bearing damages can be also *** results illuminate a great potential of the proposed method in identifying damages of real bridge structures.