过弯/制动条件下重载列车运行安全性分析

打开文本图片集

关键词：重载列车；动力学模型；制动时延；列车运行安全；运行速度

中图分类号：U239.4 文献标志码：A 文章编号：1003-5168（2025）21-0063-05

DOI ： 10.19968/j.cnki.hnkj.1003-5168.2025.21.012

Abstract： [Purposes] To analyze the operational safety of heavy-haul trains when passing through curves and under braking delay conditions，and further explore its influencing factors，a heavy-haul train-track dynamic model was constructed using the SIMPACK dynamic simulation software.[Methods] The operational safety of the train when passing through curves is analyzed bycalculating the derailment coefficient and the wheel load reduction rate.The operational safety of the train under braking delay conditions is analyzed by calculating the coupler force and the wheelset lift amount.[Findings] To ensure the safety of train operation，the speeds when passing through curves with radiiof 600，800，1 000，and 1 20O m should not exceed 80， 85，90， and 100km/h ，respectively.When the braking time interval for each vehicle is 0.01 s and 0.02 s，the braking force should not exceed 8O0 kN and 6OO kN，respectively.[Conclusions] The operating speed，operating curve radius，braking force，and braking time interval of heavy-haul trains all affect the operational safety of the train.

Keywords： heavy-haul train; dynamic model; braking delay; train operation safety; operating speed

0 引言

重载铁路具有运能大、效率高、运输成本低等诸多优点。（剩余5125字）