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Modal identification of long-span Runyang Bridge using ambient responses recorded by SHMS

Modal identification of long-span Runyang Bridge using ambient responses recorded by SHMS

作     者:QingGuo Fei AiQun Li XiaoLin Han ChangQing Miao 

作者机构:School of Civil Engineering Southeast University Nanjing 210096 China Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education Southeast University Nanjing 210096 China 

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

年 卷 期:2009年第52卷第12期

页      面:3632-3639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:Supported by the National High Technology Research and Development Program of China("863"Project)(Grant No.2006AA04Z416) the Natural Science Foundation of China(Grant No.90715014) 

主  题:cable-supported bridge Runyang Bridge structural health monitoring modal identification ambient response analysis 

摘      要:Runyang Bridge is a newly built cable-supported bridge that crosses the Yangtze River in *** bridge is composed of one suspension bridge and one cable-stayed *** the construction of the bridge,a structural health monitoring system(SHMS)was installed,which was designed by the Southeast *** the bridge was open to traffic,quantities of structural ambient responses have been recorded by the ***,it’s really important to extract structrural information from these records for health *** paper presents the study on modal identification of the *** dynamic properites including modal frequencies,mode shapes and damping ratios are extracted from the ambient *** identification methods are employed including the enhanced frequency domain decomposition and the stochastic subspace *** identified modal parameters from the two methods are *** show that modal frequencies and mode shapes from the two methods are almost the same while the damping ratios are different.

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