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中文摘要：
结合拉格朗日法和虚功原理并引入模态叠加法建立了风-车-桥耦合振动分析模型,拟合了一套考虑桥梁影响的车辆气动力系数计算公式,完善了风-车-桥耦合振动分析方法,并编制了相应的计算程序。以江顺长江大桥为工程背景,分析研究了车桥系统气动力参数对侧风作用下桥梁和车辆耦合动力响应的影响。研究结果表明：桥梁气动力参数对桥梁耦合动力响应有较大的影响,对车辆耦合动力响应也有一定的影响;车辆气动力参数对车辆耦合动力响应有较大影响,而对桥梁耦合动力响应基本没有影响。
英文摘要：
A coupled dynamic analysis model of wind-vehicle-bridge system by combining Lagrange method, the principle of virtual work and the mode superposition method was established, the calculation formulas of aerodynamic coefficients of vehicle were fitted considering the aerodynamic interference between vehicles and the bridge, a coupled dynamic analysis method of wind-vehicle-bridge system was developed and the computation program was built in this study. Taking Jiangshun Yangtze bridge as an example, effects of the aerodynamic parameters of vehicle-bridge system on coupled dynamic response of bridge and vehicle under cross wind were discussed. The results show that the bridge aerodynamic parameters have significant effects on the coupled dynamic responses of bridge, but slight impacts on dynamic responses of the vehicle. The vehicle aerodynamic parameters have essentially no impact on the responses of bridge while have a great impact on the responses of vehicle.
同期刊论文项目
同项目期刊论文
Experimental and Numerical Studies of Nonstationary Random Vibrations for a High-Pier Bridge under V
Fatigue Reliability Assessment for Long-Span Bridges under Combined Dynamic Loads from Winds and Veh
Wind Tunnel Study of a Sudden Change of Train Wind Loads due to the Wind Shielding Effects of Bridge
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