两种非传统交叉路口的运行性能研究

发布时间：2018-03-18 01:23

本文选题：通行能力　切入点：延误分析　出处：《中国科学技术大学》2016年硕士论文　论文类型：学位论文

【摘要】：随着经济的快速发展,各种出行工具的大量增加导致了城市交通需求的增加,越来越多的交叉口运行在过饱和的交通状况下。连续流交叉口和上游信号交叉口作为两种非传统交叉口,因为其良好的控制效益而备受关注。然而由于其几何布局的独特性,关于这两种交叉口运行性能的分析,包括车道分配方案和信号配时方案的优化研究还没有得到很好地解决。为了降低传统交叉口左转车流对运行性能产生的影响,给解决交叉口运行效率低的问题提供新的思路,本文考虑了连续流交叉口和上游信号交叉口几何上的相似性,以通行能力最大化为优化目标建立了一个基于车道组的综合优化模型,并利用实测数据结合优化模型的优化结果对这两种设计方案的通行能力和延误进行了对比研究。主要工作如下：首先,详细地研究分析了连续流交叉口与上游信号交叉口的运行机理及冲突点位置,对这两种非传统交叉口的通行能力做出了定性地分析,并且建立了以通行能力为目标的综合优化模型。为了能够更加充分地利用交叉口有限的时空资源,达到资源利用率的最大化,该模型不仅考虑了与交叉口有限时间资源相关的配时参数,还考虑了与有限空间资源相关的车道划分方案。本文还给出了求解该综合优化模型的详细的求解算法。其次,选取合肥市金寨路与繁华大道交叉口作为数据采集点,通过实地采集的交通数据结合仿真结果对建立的综合优化模型进行了验证。对这两种非传统设计方案的通行能力做了定量地分析研究。研究考虑了不同流量场景、交通状况是否均衡和转弯比例的变化可能产生的影响,并给出了详细的分析结果。最后,使用VISSIM微观仿真软件,通过仿真分析了不同场景下连续流设计方案与上游信号设计方案的车辆平均延误,并与不同场景下通行能力的分析结果作了对比。对比分析的结果表明对于固定出行需求而言,提高通行能力与降低车辆延误通常是相互促进的。
[Abstract]:With the rapid development of economy, the increase of various travel tools leads to the increase of urban transportation demand. More and more intersections operate in supersaturated traffic conditions. As two kinds of non-traditional intersections, continuous flow intersections and upstream signalized intersections have attracted much attention because of their good control benefits. However, due to their unique geometric layout, The analysis of the operation performance of these two intersections, including the optimization of lane allocation and signal timing schemes, has not been well solved. In order to reduce the impact of the left-turn traffic flow on the performance of traditional intersections, In order to solve the problem of low operational efficiency of intersections, the geometric similarity between continuous flow intersections and upstream signalized intersections is considered in this paper. A comprehensive optimization model based on lane group was established to maximize traffic capacity. The traffic capacity and delay of the two design schemes are compared and studied using the measured data combined with the optimization results of the optimization model. The main work is as follows: first of all, The operation mechanism and conflict point position of continuous flow intersection and upstream signal intersection are analyzed in detail, and the capacity of these two non-traditional intersections is analyzed qualitatively. In order to make full use of the limited time and space resources of intersection and to maximize the utilization rate of resources, a comprehensive optimization model aiming at capacity is established. The model not only takes into account the timing parameters related to the finite time resources of intersection, but also the lane partition scheme related to finite space resources. In this paper, a detailed algorithm for solving the comprehensive optimization model is also presented. Selecting the intersection of Jinzhai Road and busy Avenue in Hefei as the data collection point, Based on the traffic data collected in the field and the simulation results, the integrated optimization model is verified. The capacity of the two non-traditional design schemes is quantitatively analyzed and studied. Whether the traffic condition is balanced or not and the change of the turning ratio may have the influence, and gives the detailed analysis result. Finally, uses the VISSIM microscopic simulation software, The average vehicle delay of continuous flow design scheme and upstream signal design scheme under different scenarios is analyzed by simulation, and the results are compared with the results of capacity analysis under different scenarios. Increasing capacity and reducing vehicle delays are often mutually reinforcing.
【学位授予单位】：中国科学技术大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U491.23

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