城市快速路入口匝道与地面交叉口协调控制研究

发布时间：2019-01-27 17:13

【摘要】：城市快速路的出现为城市居民出行带来了巨大的便捷性,更是大大缩短了城区间出行时间,但是,由于城市化建设和匝道管理效率低下等原因,城市快速路经常出现“快不起来”的现象。这与城市快速路安全、快速、高效、舒适、方便的设计理念相违背,快速路主线的拥堵甚至蔓延至地面衔接交叉口处,影响着地面交通的正常运行。入口匝道是地面车流驶入快速路主线的必经路径,入口匝道的交通管理水平很大程度决定着快速路系统的总体服务水平。虽然入口匝道控制被认为是当今最为有效的快速路系统交通问题处理方法之一,其目的是保证快速路主线的利益最大化,但是却把交通压力转移到了地面交通中。实施入口匝道和地面衔接交叉口整体联合管控,实现整体利益的最大化是当今快速路研究的热点,快速路入口匝道与地面关联交叉口协调控制的研究具有重要的现实意义。本文首先对城市快速路主线交通流、入口匝道交通流和地面交叉口交通流进行分析研究,并结合昆明市二环快速路系统的交通问题和金马立交-大树营立交快速路路段交通流分析,为论文后面的研究提供理论依据。在控制机理方面,介绍了入口匝道控制的原理、设置依据和系统组成,并对入口匝道控制方法进行分类归纳研究,并分别介绍了匝道单点控制算法和匝道协调控制算法,最后介绍了地面交叉口信号控制基本理论,奠定了论文的理论基础。论文引出了入口匝道实施控制的基本前提,并以昆明市金马立交-大树营立交快速路路段为例进行交通现状分析,以控制阀值划分不同交通状态下的控制方式(匝道调节、匝道关闭和匝道开放),并在此基础上得到论文的控制策略。论文最后采用快速路通道系统交通流模型,利用流体力学分段划分分析法对本文研究区域进行交通流建模,为达到分段评价最优的目的,选用车均延误最小为目标函数建立协调控制模型。最后对论文的控制策略用VISSIM仿真软件进行仿真,并对控制实施前后车均延误、平均排队长度和最大排队长度进行对比分析。
[Abstract]:The emergence of urban expressway brings great convenience to urban residents, and also shortens the travel time between urban areas. However, due to the construction of urbanization and low efficiency of ramp management and other reasons, The phenomenon of "not getting up" often appears on the urban expressway. This is contrary to the safe, fast, efficient, comfortable and convenient design idea of the urban expressway. The traffic congestion of the main line of the expressway even spreads to the ground junction, which affects the normal operation of the ground traffic. The on-ramp is the necessary path for the ground traffic flow to enter the main line of the expressway. The traffic management level of the on-ramp largely determines the overall service level of the expressway system. Although the on-ramp control is considered to be one of the most effective methods to deal with traffic problems in expressway system, its purpose is to maximize the benefits of the main line of the expressway, but the traffic pressure is transferred to the ground traffic. It is a hot topic to implement the joint control of the on-ramp and the ground junction to maximize the overall benefits. The research on the coordinated control between the on-ramp and the ground related intersection is of great practical significance. In this paper, the main line traffic flow, the on-ramp traffic flow and the ground intersection traffic flow on the urban expressway are analyzed and studied. Combined with the traffic problems of the second Ring Road Expressway system in Kunming and the traffic flow analysis of Jinma Interchange-Daoying Interchange Expressway, this paper provides the theoretical basis for the research at the end of this paper. In the aspect of control mechanism, the principle, setting basis and system composition of on-ramp control are introduced, and the methods of on-ramp control are classified and summarized, and the single-point control algorithm and coordinated ramp control algorithm are introduced, respectively. Finally, the basic theory of ground intersection signal control is introduced, which lays the theoretical foundation of the paper. This paper introduces the basic premise of the on-ramp control, and takes Jinma Interchange-Daoying Interchange in Kunming as an example to analyze the traffic situation, and divides the control mode (ramp adjustment) under different traffic conditions with the control threshold. Ramp closure and ramp opening), and on this basis get the control strategy of the paper. In the end of this paper, the traffic flow model of expressway system is adopted, and the traffic flow model of the study area is established by using the method of segment division analysis of hydrodynamics, in order to achieve the purpose of optimal segmental evaluation. The coordinated control model is established by using the minimum vehicle delay as the objective function. Finally, the control strategy is simulated by VISSIM software, and the average delay, average queue length and maximum queue length before and after the implementation of the control are compared and analyzed.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.23

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