SQ8与其他列车混编纵向冲动仿真分析

Simulation Analysis of Longitudinal Impulse for SQ8 Mixed with Other Vehicle

摘要: SQ8是一种新型铁路车辆，它与其他车辆在结构上有较大的差异，混编时可能出现较大的列车纵向冲动，进而危害到货物的运输安全。因此，本文采用列车空气制动和纵向动力学联合仿真系统(TABLDSS)，仿真分析了SQ8与其他车辆混编后制动能力和纵向冲动水平。结果表明，当SQ8列车分别混编入SQ6列车首尾位置时，他们的最大车钩力与SQ6单编时基本一致。两种混编方式下的紧急制动距离变化6米、3米。当SQ8列车分别编入C70列车首中尾部时，三种编组方式下的最大车钩力都比C70单编时小，最大差值达到了204.7 kN，此时SQ8列车位于混编列车尾部。当SQ8列车位于混编列车中部位置时车钩力最大。三种混编方式下的紧急制动距离分别为1231米、1217米、1204米，比C70单编列车制动距离略长。综上所述，SQ8与SQ6可以无条件混编，与C70车混编时SQ8车辆位于尾部位置较佳。

Abstract: SQ8 is a new type of railway vehicle, which is quite different from other rolling stock in structure. It may cause great longitudinal impulse when mixed with other vehicle and then damage the transport safety of the goods. Therefore, simulation analysis of the mixed train on braking and longitudinal impulse is carried out with TABLDSS in this article. The result shows that their maximum coupler force is almost the same with the SQ6 single train when several SQ8 are mixed into the first and the rear position of the SQ6. The emergency braking distance of the two kinds of mixed mode changes 6 m, 3 m respectively. The maximum coupler force of the three mixed modes that several SQ8 are mixed in the head, middle and tail of the C70 respectively is smaller than the C70 unit train’s. SQ8 is located in the rear of the mixed train when the maximum difference is up to 204.7 kN. The largest coupler force appears when the SQ8 is mixed in the middle of the C70. The emergency braking distance of the three mixed modes is 1231 m, 1217 m and 1204 m respectively, which is longer than C70 unit train’s. In summary, SQ8 can be mixed with SQ6 in no condition while it’s better to be located in the rear position when mixed with C70.