兰州市轨道交通4号线速度目标值研究

Research on the Target Speed of Lanzhou Rail Transit Line 4

速度目标值是市域快线的重要技术指标,它直接影响土建工程规模及设备系统的选择。以兰州轨道交通4号线为例研究分析如何选择速度目标值,根据现状公路旅行时间以及轨道交通线网对该线功能定位的要求,提出该线的时间目标值。对100、120、140 km/h 3种速度目标值方案从运行时间、站间距离、旅行速度、运行能耗、系统设备、环境影响和工程投资等方面进行综合分析,最终推荐运营费用和投资较节省的100 km/h速度目标值方案。

The target speed is an important technical index of the urban express railway,and it has a direct effect on the scale of civil engineering and equipment system. Lanzhou rail transit line 4 is selected as an example to analyze the speed target. According to the travel time by the existing roads and the function orientation requirements of line 4 from Lanzhou rail transit network,the author puts forward the time target of Lanzhou rail transit line 4. For the speeds of three target schemes including 100,120,140 km / h,a comprehensive analysis is made considering the operation time,the distance between adjacent stations,operation speed,energy consumption,equipment operation,environmental impact,engineering investment and so on. It is recommended that the speed target of 100 km / h be the best way to save the operation expenses and investment.