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| Research on the Choice of Highest Service Speed for Type B Metro EMU |
| ZHANG Xiong1, CHEN Bin2 |
| (1.China Railway Eryuan Engineering Group Co. Ltd, Chengdu, Sichuan 610031, China; 2.Ningbo Rail Transit Group Co. Ltd, Ningbo, Zhejiang 315101, China) |
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Abstract Abstract：Research purposes： There are more and more urban rapid rail transit projects in China, the choice of highest service speed plays a key role on the cost and benefit of the project. By the reason of lacking criteria, the highest service speed was commonly chosen by the objective of journey time and the percentage of the length of intervals which train can get the highest speed, that method neglects some important factors, and then misleads the conclusion. This paper analyzed systematically travel time value, traction energy consumption, rolling stock cost, maintenance cost, tunnel construction cost and depot construction cost, then presented the principles, methods and references regulation for the choice of highest speed for metro EMU type B, which can be used on urban rapid transit project study. Research conclusions： (1)When the metro EMU type B(4M2T) runs at the highest speed of 80 km/h, 100 km/h and 120 km/h at least 10 s, the minimum interval distances are 1 000 m, 1 500 m and 2 500 m respectively. (2) The higher the maximum speed of the train is, the higher the construction and operation cost are, but they have the non-linear relation. (3) By travel time value-cost analyzing, on the condition of interval distance (D)≤1 500 m, 1 500 m
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Received: 15 September 2017
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2017, Vol. 34 
