高速列车抗侧风倾覆稳定性研究

Research on Overturning Stability of High Speed Trains under Crosswind

根据侧风作用下车辆在曲线上的受力情况,建立了倾覆稳定性分析模型。以国内某型动车组为例,计算了有关工况下的气动力与临界倾覆风速,并分析了抗侧滚扭杆刚度与横向止挡刚度对车辆倾覆稳定性的影响。计算结果表明,采用主动抗侧滚扭杆装置使车体向迎风侧倾摆一定角度可以改善侧风作用下车辆的倾覆稳定性。

The overturning stability analysis model is set up on the basis of the forces on vehicles under crosswind on curves. With the multiple units in China as the example, the aerodynamic force and critical overturning wind speed under relevant working conditions are calculated, the effects of the stiffness of the anti-roll bar and the stiffness of the lateral stop on the overturning stability of vehicles are analyzed. The calculation result shows that applying the active anti-roll bar to tilt the carbody at a certain angle toward the wind can improve the overturning stability of vehicles under crosswind.