城市道路干线协调控制配时优化研究

发布时间：2019-06-11 11:51

【摘要】：改革开放以来,随着我国经济快速发展,城市机动车数量急剧增加。特别是近十年来,当越来越多的人们享受机动车带来的便捷、舒适的生活时,随之而来的交通拥堵、尾气排放等问题也极大的制约着经济社会的发展。我们知道,导致城市交通拥堵的关键路段是城市道路交叉口,因此我们需要提高道路通过能力,最大限度减少城市交叉口延误。缓解交通拥挤的方法有多种,包括拓宽路面、修建高架桥等,但这些方法因为道路用地不足等原因而使用有限。再有就是对单个交叉口进行配时优化,但这种“各自为战”的优化方案造成的结果就是各交叉口之间不能协调,可能会导致一些交叉口更加拥堵。因此,不管从哪个角度讲,解决交通拥堵问题都是当务之急,刻不容缓。虽然国内国外都有学者已经在这方面进行了研究,但还有些不足。本文就信号灯配时入手,首先,对交通信号控制的研究背景和发展现状作了阐述,并对其研究不足做一分析。其次,文章对与城市干道协调控制有关的交通信号基本参数、交通信号基本控制方法以及控制效果评价指标做了介绍,并对干线系统的协调控制方式进行了分析。对城市主干道信号灯的协调控制进行了深入探讨,通过研究进一步明确了该控制系统的设计依据和设计思想。对目前干道协调控制中常用的两种相位差优化技术进行了说明,特别是对最大绿波带法中的三种方法进行了详细介绍。之后对干道协调控制配时方案的基本原理及主要步骤作了总结。最后,以西安市朱雀大街主干道为例,对该干线连续相邻的几个路口进行了干线协调控制。运用满足路网工作长度的VISSIM4.3仿真软件进一步验证协调控制效果。结果表明,实行干道协调控制后,该干线的车辆延误、排队长度等指标明显降低,说明该协调控制方案有效。
[Abstract]:Since the reform and opening up, with the rapid development of China's economy, the number of urban motor vehicles has increased dramatically. Especially in the past ten years, when more and more people enjoy the convenient and comfortable life brought by motor vehicles, the following problems such as traffic congestion, exhaust emissions and so on also greatly restrict the development of economy and society. We know that the key road sections that lead to urban traffic congestion are urban road intersections, so we need to improve the traffic capacity and minimize the delay of urban intersections. There are many ways to alleviate traffic congestion, including widening the road surface, building viaduct and so on, but these methods are limited because of the shortage of road land. The other is to optimize the timing of a single intersection, but the result of this "separate" optimization scheme is that there is no coordination between the intersections, which may lead to more congestion at some intersections. Therefore, no matter from which point of view, it is urgent to solve the traffic congestion problem. Although some scholars at home and abroad have carried out research in this area, but there are still some shortcomings. This paper starts with the timing of signal lights. First of all, the research background and development status of traffic signal control are described, and the lack of research is analyzed. Secondly, the basic parameters of traffic signal, the basic control method of traffic signal and the evaluation index of control effect related to the coordinated control of urban trunk road are introduced, and the coordinated control mode of trunk line system is analyzed. The coordinated control of urban main road signal lamp is discussed in detail, and the design basis and design idea of the control system are further clarified through the research. Two kinds of phase difference optimization techniques commonly used in trunk road coordination control are described, especially three methods in the maximum green band method are introduced in detail. Then the basic principle and main steps of the coordinated control timing scheme for the main road are summarized. Finally, taking the main road of Vermilion Bird Street in Xi'an as an example, the trunk line coordination control is carried out at several consecutive adjacent intersections of the trunk line. The VISSIM4.3 simulation software satisfying the working length of the road network is used to further verify the coordination control effect. The results show that the vehicle delay and queue length of the trunk line are obviously reduced after the coordinated control of the main road is carried out, which indicates that the coordinated control scheme is effective.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.54

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