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提出一种新的直接求解车-桥系统振动响应的方法,即把车-桥系统作为一个整体来考虑,通过变换车轮与桥面对应点间的耦合关系来实现车辆移动,从而使车-桥系统振动响应的求解更加简便和实用化;将该程序计算结果与理论分析结果、ADAMS软件计算结果及模型试验结果进行对比;应用该车-桥相互作用分析程序研究了在2种路面粗糙度条件下的车-桥系统竖向响应,并进行了对比分析。结果表明:提出的程序计算结果正确、可靠;车-桥系统的竖向加速度及车轮与桥面之间的相互作用力受路面粗糙度影响较大。
A new method to directly solve the vibration response of vehicle-bridge system is proposed. The vehicle-bridge system is considered as a whole. By changing the coupling relationship between the wheels and the corresponding points on the bridge surface, the vehicle movement can be realized, The solution of the system vibration response is more simple and practical. The results of the program are compared with the results of theoretical analysis, the calculation results of ADAMS software and the results of model tests. By using the vehicle-bridge interaction analysis program, Under the car - bridge system vertical response, and conducted a comparative analysis. The results show that the proposed calculation results are correct and reliable. The vertical acceleration of vehicle-bridge system and the interaction between wheel and bridge deck are greatly affected by the roughness of road surface.