Test Study on Aerodynamic Performance of Three-dimensional Stayed Cables in Two-dimensional Flow Field
Cables,distributed with diversity spatially angle,are rich in wind direction.Circular cross sectional shape is sensitive to the Reynolds number.This paper studed the aerodynamic performance of three-dimentional stayed cable under two-dimensional flow field in Changan University wind tunnel by Pitot tube,electronic pressure scanning valve,data conversion and collection systems.The following conclusions are obtained:(1)The stagnation point and the upper and lower airflow separation point clockwise goes on with the wind angle increases.Absolute value of pressure coefficient at stagnation point and separation point are biggest at 0 ° wind angle.(2)The absolute value of pressure coefficient at upper and lower separation point increase with the increase of wind speed.(3) Pressure stagnation point,and upper and lower airflow separation point dont changed with the parameters of helix,while pressures near helix changed irregularlly.Drag coefficient decrease with the increase of helix distance and the deduce of helix height.Meaningful references are provided for the further refinement research on aerodynamic performance of cable-stayed with suppressing vibration measures.
Bridge engineering Stayed cable Three-dimensional model Two-dimensional flow field Wind tunnel tests Wind pressure distribution Aerodynamic performance
XUE Xiao-feng Bai Hua Li Yu Li Wei Gong Sai
Key Laboratory of Ministry of Communications for Bridge Detection & ReinforcementTechnology, Changa Department of Municipal Engineering, Guangdong power vocational and technical college,Guangzhou Guan
国际会议
西安
英文
469-473
2012-08-24（万方平台首次上网日期，不代表论文的发表时间）