钩形弯左转信号交叉口通行能力分析

发布时间：2018-01-07 16:13

本文关键词：钩形弯左转信号交叉口通行能力分析　出处：《东南大学》2017年硕士论文　论文类型：学位论文

【摘要】：近年来,由于"公交优先战略"的实施,各大城市建设快速公交系统,尤其是有轨电车的建设,在城市主干道中央设置双向公交、电车专用车道,进一步压缩了信号交叉口普通机动车可利用的空间资源,导致许多交叉口难以设置左转专用进口车道,也就无法设置左转专用信号相位。然而,如果左转与直行机动车同时放行,那么左转机动车不仅与直行机动车产生交叉冲突,还将与公交车或电车产生交叉冲突,导致交叉口安全水平与通行能力下降。钩形弯左转交叉口是左转机动车有效的利用直行相位通过钩形转弯完成左转,避免与直行车流的冲突,为当前存的在问题提供了新的解决思路和方法。本文以钩形弯左转交叉口作为研究对象,采用感应信号控制方式,借助计算机仿真软件VISSIM,建立了钩形左转信号交叉口仿真模型,模拟了不同车流量需求、行人流量需求下钩形弯左转信号交叉口的交通流运行状态。选取通过交叉口通过车辆数量、车辆平均延误、车辆平均停车次数、行人过街数量等指标,以传统左转信号交叉口为对比,根据仿真输出结果对钩形左转信号交叉口通行能力进行了分析。分析表明:与传统左转信号交叉口相比,当路段车流量需求及左转车流都较大时,钩形弯左转方式极大的提高了左转车流及同进口直行车流车辆的通过数量,同时极大的减少了左转车辆和直行车辆(普通社会车辆、有轨电车)的平均停车次数和平均延误;与传统左转信号交叉口相比,行人交通流量对钩形弯左转信号交叉口车流影响较小,尤其是对钩形弯左转同进口直行车流影响甚微。
[Abstract]:In recent years, due to the implementation of the "bus priority strategy", major cities build bus rapid transit system, especially the construction of tram, and set up two-way public transport and tram lanes in the central of the main road of the city. Further compressed signal intersection common vehicle available space resources, resulting in many intersections difficult to set left turn special import vehicle, also can not set left turn special signal phase. However. If the left turn and the straight motor vehicle are released at the same time, then the left turn vehicle will not only have a cross conflict with the direct motor vehicle, but will also have a cross conflict with the bus or the tram. As a result, the safety level and traffic capacity of the intersection are reduced. The hook bend left turn is an effective way to use the straight phase to complete the left turn through the hook turn, to avoid the conflict with the straight traffic. This paper takes the hook bend left turn intersection as the research object, adopts the inductive signal control method, and makes use of the computer simulation software VISSIM. The simulation model of hook left turn signalized intersection is established, and the traffic flow running state of hook bend left turn signal intersection is simulated under different traffic demand and passenger flow demand. The number of vehicles passing through intersection is selected. Compared with the traditional left-turn signalized intersection, the average vehicle delay, the average parking times and the number of pedestrians crossing the street were compared. According to the simulation results, the capacity of the hook left turn signal intersection is analyzed. The analysis shows that: compared with the traditional left turn signal intersection, when the traffic demand and the left turn traffic are larger. The left-turn mode of hook bend greatly improves the number of left-turn vehicles and the vehicles passing through with the imported direct vehicles, and greatly reduces the number of left-turn vehicles and direct vehicles (ordinary social vehicles). The average number of stops and the average delay; Compared with the traditional left-turn signalized intersection, pedestrian traffic flow has little effect on the traffic flow at the hook bend left turn signal intersection, especially on the hook bend left turn and the inlet direct traffic flow.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491

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