为考虑车辆和桥梁的相互气动影响,利用研制的测试装置,测试了不同工况下车辆和桥梁的气动力系数,讨论了风场的紊流特性、风速、前后车辆干扰、车辆横向距离对车辆气动力系数的影响以及车辆对桥梁静三分力系数的影响;通过分析研究车辆和桥梁表面压力测试结果,探究了车辆和桥梁气动特性发生变化的原因,验证了测试数据的准确可靠性.研究结果表明:风场的紊流特性、前后车辆干扰以及车辆横向距离对车辆气动力系数有较大的影响,而风速对其基本没有影响;另外,桥梁静三分力系数受车辆的影响也比较大.
In the present study,an experimental setup was developed to measure the aerodynamic parameters of the vehicle and the bridge for different cases in a wind tunnel considering the aerodynamic interference.The influence of the wind turbulence,wind speed,vehicle interference,and the distance of vehicle from the windward edge on the aerodynamic coefficients of the vehicle,and the influence of vehicles on the static coefficients of the bridge were investigated based on the experimental results.The reasons of the changing of the aerodynamic characteristics of the vehicle and the bridge were attempted to be researched and the reliability of the measured results was validated by analyzing the surface pressure of the vehicle and the bridge.The measured results showed that the wind turbulence,the vehicle interference,and the vehicle distance from the windward edge significantly affect the aerodynamic coefficients of vehicles,while little does the wind speed.The static coefficients of the bridge were also significantly influenced by vehicles.