大风对高速列车安全性的影响研究

为研究不同阵风对高速列车运行安全的影响,对高速列车侧向施加Chinese hat自然风、阶跃阵风和13.8m/s的横风,SIMPACK仿真用于评估不同阵风条件下列车安全运行指标的变化。结果表明,大风影响列车的安全运行。列车在无风屏障的线路上行驶时,和阶跃阵风相比,在自然风环境中列车的脱轨系数增大26%,轮轴横向力增大64%,轮重减载率增大24%,轮轨垂向力增大14%;比横风环境下分别增大83%,39%,78%,31%。风屏障对横风有阻挡作用,能提高列车运行安全性。

Study on Influence of High Wind on High-speed Train Safety

To study the influence of high wind on train safety operation,by applying Chinese hat natural wind,step gust and13.8 m/s crosswind on the side of high-speed trains,SIMPACK simulation is applied to obtain the changes of safety operation indexes for evaluating trains under different gust conditions.Compared with step gust,the derailment coefficient,wheel and axle transverse force,wheel weight reduction rate and wheel and rail vertical force in the natural wind environment increased by26%,64%,24%and 14%respectively,and increased by 83%,39%,78%and 31%respectively compared with the cross wind environment.The wind barrier can block the cross wind and improve the safety of train operation.