Research on Stop-Addition Capability and Critical Distance of High-Speed Railway Trains under Speed-Up Conditions

YiFei Lv

doi:10.63313/AERpc.9113

Authors

YiFei Lv Central South University of Forestry and Technology, Changsha, Hunan 410000, China Author

DOI:

https://doi.org/10.63313/AERpc.9113

Keywords:

High-Speed Railway, Speed-Up, Added Stop, Time Cost, Critical Distance

Abstract

To evaluate the feasibility of adding intermediate stops to high-speed railway trains under speed-up conditions, this paper takes a 300 km/h non-stop operation as the benchmark and investigates whether the running-time margin produced by increasing the operating speed to 350 km/h or 380 km/h can compensate for the time cost of added stops. Based on the acceleration, cruising, braking and station-stop processes of high-speed trains, evaluation indices are established, including speed-up time saving, stop-addition time cost, residual time margin, maximum feasible number of added stops and critical distance. The results show that the time cost of one added stop is much larger than the loss caused by speed-reduced pass-through at small and medium stations. Under 350 km/h and 380 km/h conditions, the total time cost of one added stop is approximately 282.04 s and 295.93 s, respectively, whereas passing through one station at 0.9 times the target speed increases the running time by only about 2.53 s and 2.60 s. The calculated critical distances for adding 1-4 stops are 178.06 km, 342.59 km, 507.12 km and 671.65 km under 350 km/h, and 131.97 km, 248.90 km, 366.20 km and 483.13 km under 380 km/h. The proposed evaluation method can provide a reference for stop-addition capability assessment and critical-distance determination under high-speed railway speed-up conditions.

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