Scheduling optimization of tram operation diagram under signal passive priority condition
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摘要: 以半封闭路权和共享路权的有轨交通线路为背景, 基于交叉口信号被动优先控制策略, 在给定的不同路口信号周期和绿灯时长条件下, 以提高有轨电车的旅行速度为目标, 研究了交叉口拓扑结构的定义规则和交叉口运行图的表示方法, 构建了有轨电车时刻表与交叉口绿灯信号配时优化的整数规划模型, 以某城市的一段有轨电车线路为例, 应用运行图编制软件对模型进行验证。计算结果表明: 当绿灯时长为15 s时, 无绿灯信号配时优化的旅行时间增加了341 s, 而优化后旅行时间增加仅为56 s, 节省了285 s。绿灯信号配时优化对于提升有轨电车列车的旅行速度具有非常明显的效果, 基于模型的计算结果能够编制出综合旅行时间最优的有轨电车运行图。Abstract: Taking rail transit line with semi-closed road right and shared road right as background, based on intersection signal passive priority controlling strategy, under the condition of given signal periods for different intersections and green light durations, the definition rule of intersection topology structure and the expression method of intersection operation diagram were studied. An integer programming model of tram timetable and intersection green light signal timing optimization was built in order to increase tram travel speed.A section of tram line in one city was taken as an example to verify the model by using timetable scheduling software.Calculation result shows that when the green light duration is 15 s, the added value of travel time is 341 swithout green light signal timing optimization, the added value of travel time is only 56 safter optimization, which saves 285 s.Green light signal timing optimization has obvious effect on increasing the travel speed of tram train.Tram operation diagram with best comprehensive travel time can be drawn up based on the calculation result of the model.
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图 2 带支线的交叉口拓扑结构定义
Figure 2. Definitions of intersection topology structures with branch lines
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