Wind Tunnel Test on the Wind-Resistant Behavior of a Long-Span Cable-Stayed Bridge during Erection  

作　　者：马存明 廖海黎 陶奇 

机构地区：[1]Research Centre for Wind Engineering,Southwest Jiaotong University

出　　处：《Journal of Southwest Jiaotong University(English Edition)》2010年第2期112-117,共6页西南交通大学学报（英文版）

基　　金：The National Natural Science Foundation of China(Nos.50808148 and 90815016)

摘　　要：In order to investigate the aerodynamic behavior of the Sutong bridge over Yangtze River during erection, a 1：50 sectional model of the bridge deck, a 1： 100 full aeroelastic model of the free standing pylon and a 1： 125 full aeroelastic model for the maxim cantilever configuration were built. The test results show that there was no serious vortex-induced vibration at the bridge deck, and that the free standing tower, the model scale and the turbulence intensity influenced static loading. The buffeting responses during the maximum cantilever configuration did not affect the safety of the bridge under construction.In order to investigate the aerodynamic behavior of the Sutong bridge over Yangtze River during erection, a 1：50 sectional model of the bridge deck, a 1： 100 full aeroelastic model of the free standing pylon and a 1： 125 full aeroelastic model for the maxim cantilever configuration were built. The test results show that there was no serious vortex-induced vibration at the bridge deck, and that the free standing tower, the model scale and the turbulence intensity influenced static loading. The buffeting responses during the maximum cantilever configuration did not affect the safety of the bridge under construction.

关 键 词：Cable-stayed bridge Erection stage Aerodynamic behavior Wind tunnel test 

分 类 号：U448.27[建筑科学—桥梁与隧道工程] V211.74[交通运输工程—道路与铁道工程]