Field measurement on wind characteristic and buffeting response of the Runyang Suspension Bridge during typhoon Matsa  

作　　者：WANG Hao LI AiQun GUO Tong XIE Jing 

机构地区：[1]College of Civil Engineering,Southeast University,Nanjing 210096,China

出　　处：《Science China(Technological Sciences)》2009年第5期1354-1362,共9页中国科学（技术科学英文版）

基　　金：Supported by the National Hi-Tech Research and Development Program of China ("863" Project) (Grant No. 2006AA04Z416);the Key Project of the National Natural Science Foundation of China (Grant No. 50538020);the Outstanding Youth Fund of the National Natural Science Foundation of China (Grant No. 50725828)

摘　　要：Field measurement on wind characteristic and buffeting response of existing bridge is of great value to the development of bridge wind engineering,and the structural health monitoring system(SHMS) em-ployed in many long-span bridges provide a research basis for the field measurement.In order to pro-vide reliable basis for wind resistant evaluation of Runyang Suspension Bridge(RSB),two anemome-ters and 85 accelerometers were installed in the SHMS of RSB.In August 2005,Typhoon Matsa crossed over Jiangsu,the SHMS timely recorded the typhoon and structural vibration responses.In this paper by using the time-frequency technique and statistical theory,the recorded data were analyzed to obtain the strong wind characteristics,the buffeting response characteristics of the cable and deck,and the variation of buffeting response RMS versus wind speed.Results obtained in this study can be em-ployed to validate the credibility of current buffeting response analysis theory techniques,and provide reference values for wind resistant evaluation of other long-span bridges.Field measurement on wind characteristic and buffeting response of existing bridge is of great value to the development of bridge wind engineering, and the structural health monitoring system (SHMS) employed in many long-span bridges provide a research basis for the field measurement. In order to provide reliable basis for wind resistant evaluation of Runyang Suspension Bridge (RSB), two anemometers and 85 accelerometers were installed in the SHMS of RSB. In August 2005, Typhoon Matsa crossed over Jiangsu, the SHMS timely recorded the typhoon and structural vibration responses. In this paper by using the time-frequency technique and statistical theory, the recorded data were analyzed to obtain the strong wind characteristics, the buffeting response characteristics of the cable and deck, and the variation of buffeting response RMS versus wind speed. Results obtained in this study can be employed to validate the credibility of current buffeting response analysis theory techniques, and provide reference values for wind resistant evaluation of other long-span bridges.

关 键 词：SUSPENSION BRIDGES TYPHOONS BUFFETING response field measurement structural HEALTH monitoring system(SHMS) 

分 类 号：TG806[金属学及工艺—公差测量技术]