In addition to the discontinuity of the rail profile of a normal turnout, the unique S-shaped curve of a crossover significantly affects the negotiation performance of a train. For heavy-haul freight trains, the in-train forces generated during the braking process may further deteriorate the running safety. Investigating the dynamic behaviour of the train passing through the crossover under braking forces, therefore, can provide a reasonable basis for ensuring train safety. This paper analyses the dynamic response and wheel wear of a three-vehicle train negotiating a single crossover under variable conditions, including variable braking forces, wheel-rail friction coefficient, and crossover layout forms. The results show that the three factors have considerable influences on train safety. If one of the three factors keeps an ideal level, the safe probability of empty wagons can be significantly improved. Considering that there are still some crossovers with tight curves in the existing railway system, avoiding large braking or lubricating the wheel flange in the crossover is still an effective solution to improve the vehicle's performance. In addition, for a new single crossover, a 600-m-radius curve is a good option for balancing permissible train speeds and construction costs of the crossover.
Running safety analysis of a freight train passing through a single crossover during braking
Vehicle System Dynamics ; 60 , 10 ; 3519-3539
2022-10-03
21 pages
Article (Journal)
Electronic Resource
Unknown
Freight train safety braking system and operation method thereof
European Patent Office | 2025
|Investigation on Running Safety of Empty Wagons in Long Freight Train Passing a Worn Switch Rail
Springer Verlag | 2020
|ELECTRONC ACTUATION IMPROVES FREIGHT TRAIN BRAKING
Online Contents | 1996
Electronic actuation improves freight train braking
IuD Bahn | 1996
|