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.