Driving safety analysis of various types of vehicles on longspan bridges in cross winds considering aerodynamic interference
A reasonable evaluation of the driving safety of vehicles on a bridge is substantial to maintaining the safe and economic operation of the bridge.This paper aims at carrying out driving safety analysis of three types of vehicles on a long-span bridge in crosswinds by considering vehicle aerodynamic interference between the vehicles and the bridge based on the wind-vehicle-bridge coupling vibration analysis.Firstly,the aerodynamic force coefficients of the three types of vehicles on the bridge are determined by CFD numerical simulations along with wind tunnel testing results obtained previously.Secondly,the dynamic responses of the bridge and the vehicles under crosswinds are simulated and based on which,the driving safety analyses of the three types of vehicles on the bridge are carried out for cases with and without considering the aerodynamic interference between the bridge and vehicles.Finally,the effect of the aerodynamic interference on the driving safety of the vehicles is investigated.The results show that the aerodynamic interference between the bridge and vehicles not only affects the accident critical wind speed but also the accident type for all the three types of vehicles.Such effects are also different for three types of vehicles being studied.
Long-span bridges Driving safety analysis Cross winds Aerodynamic interference Accident critical wind speed
Yan Han C.S.Cai
School of Civil Engineering and Architecture,Changsha University of Science & Technology,Changsha,Ch Department of Civil and Environmental Engineering,Louisiana State University,Baton Rouge,USA,LA 7080
国际会议
The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)
青岛
英文
1999-2016
2018-07-22（万方平台首次上网日期，不代表论文的发表时间）