移动车辆对桥梁动力作用模拟简化方法的研究

On simplifying method to simulate dynamic function of moving vehicle on bridge

对移动车辆作用下桥梁的动力反应进行研究,分别采用移动荷载和移动质量两种形式模拟车辆,通过分析桥梁在动力荷载作用下的振动方程及其挠度极值变化情况,指出自重及惯性力在桥梁挠度变形中起到的重要作用,比较了两种方法的可靠性及其适用条件。

The author carries out researches on dynamic response of bridge under the action of moving vehicle, simulates vehicles by moving load mode and moving quality mode, points out the important functions of self-weight and inertia force in bridge deflection deformation by analyzing the vibration equation of bridge under the action of dynamic load and the change of its deflection extremum, and compares the reliability and application condition of the two methods.