摘要：研究目的：国内城市轨道交通快线项目越来越多，合理选择列车最高运行速度是决定快线项目成本和效益的关键。由于缺乏相关规范，目前一般根据旅行时间目标和区间达速比选取，遗漏了一些重要的影响因素，造成部分项目速度选择 不尽合理。本文从旅行时间价值、牵引能耗、车辆购置费和维修费、盾构区间建设成本以及车辆基地建设成本等方面进行系统分析，提出地铁B型车列车最高运行速度选择的原则和方法以及参考指标，供城市轨道交通快线项目 选择列车最高运行速度参考使用。研究结论：（1）地铁B型车（4M2T）在区间最短匀速巡航时间10 s的条件下，列车最高运行速度80 km/h、100 km/h和120 km/h的最小区间长度分别为1 000 m、1 500 m和2 500 m；（2）列车最高运行速度越高，建设和运营成本越高 ，但呈非线性关系；（3）研究条件下，根据速度提高获得的时间价值与增加的成本比较，当区间距离在1.5 km以内时，最高运行速度100 km/h列车需要降速运行；当区间距离为1.5～3.5 km时，100 km/h最高运行速度具 有优势；当区间距离达到3.5 km及以上时，120 km/h最高运行速度具有优势；（4）具体建设项目可按照本文提出的方法，根据线路的具体情况进行模拟计算和分析，并综合考虑线网资源共享等因素，选取最优的列车最高 运行速度；（5）本研究成果对城市轨道交通快线项目规划设计时合理选择列车最高运行速度具有指导意义。

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