基于多品种流方法的城市拥堵路段分流研究

发布时间：2018-04-05 13:16

本文选题：多品种流　切入点：交通拥堵　出处：《西南交通大学》2015年硕士论文

【摘要】：随着国家的发展,城市化的推进成为如今城镇发展的主要趋势,因此城市人口的剧增带来了经济的迅猛发展,城市机动车保有量也呈倍数的在增长,出行需求亦在增加,这便使得交通拥堵成为世界各个国家在发展过程中面临最为普遍的交通问题,因此寻找缓解城市交通拥堵压力已成为目前亟待解决的交通问题。但是由于城市规模发展以及城市道路建设的不可逆转性,导致目前通过新建道路来满足日益增长的交通需求具有局限性,所以如何寻找有效的缓解拥堵的方法成为城市发展的关键所在。本文提出的基于多品种流方法对城市拥堵路段分流,主要是从理论角度出发,先将拥堵路段的交通流根据起讫点(Original-Destination)进行划分成不同的品种流,在不影响其余路段运行状态且分流目标流绕行距离最短的原则下,将拥堵路段的部分交通流分配到其余路段上,以此来缓解拥堵路段的交通压力。本文首先通过对城市路段拥堵的成因、特性等进行了分析研究,为本文奠定了理论基础,然后分析了较为常用的路段拥堵识别方法的优缺点,选择了指标体系法作为本文的路段拥堵识别方法；接着本文通过对比单一品种流和多品种流问题的区别以及对传统多品种流问题的数学模型进行研究,提出了何为多品种流问题,同时结合多品种流与城市路段交通流的关系,分析了二者之间的关联性,由此得到将多品种流运用于城市拥堵路段分流这一问题中是可行的；接着对城市拥堵路段的交通流组成进行分析,分析得到路段交通流的起点和终点,并进一步提出了城市拥堵路段品种流的划分方法,定义出路网的交通流以及路段的交通流的品种流类型；最后在确定本文的分流原则基础上,基于连续最短路算法以及Ford-Fulkerson算法设计了本文的交通拥堵分流方案,并通过算例证明了方法的可行性,通过VISSIM对算例进行仿真证明了方法的有效性。
[Abstract]:With the development of the country, urbanization has become the main trend of urban development, so the rapid growth of urban population has brought about rapid economic development, the number of urban motor vehicles is also increasing exponentially, and the demand for travel is also increasing.This makes traffic congestion become the most common traffic problem in the process of development of every country in the world, so finding to alleviate the pressure of urban traffic congestion has become a traffic problem to be solved urgently.However, due to the development of urban scale and the irreversibility of urban road construction, it is limited to meet the increasing traffic demand through newly built roads.Therefore, how to find an effective way to alleviate congestion has become the key to urban development.In this paper, based on the method of multi-variety flow, the traffic flow of congested sections is divided into different species flows according to original-Destination.Under the principle of not affecting the running state of the other sections and diverting the target flow around the shortest distance, the traffic flow of the congested section is allocated to the other sections to relieve the traffic pressure of the congested section.In this paper, firstly, the causes and characteristics of urban road congestion are analyzed, which lays a theoretical foundation for this paper, and then analyzes the advantages and disadvantages of common road congestion identification methods.The index system method is selected as the road congestion identification method in this paper. Then, by comparing the difference between the single variety flow and the multi-variety flow problem and studying the mathematical model of the traditional multi-variety flow problem,At the same time, the relationship between multi-variety flow and urban traffic flow is analyzed, and it is concluded that it is feasible to use multi-variety flow in urban congested road diversion.Then the composition of traffic flow in urban congested sections is analyzed, and the starting point and end point of traffic flow are obtained, and the method of classifying the traffic flow of urban congested sections is put forward.The traffic flow of outlet network and the type of traffic flow in road sections are defined. Finally, the traffic congestion diversion scheme is designed based on continuous shortest path algorithm and Ford-Fulkerson algorithm.The feasibility of the method is proved by an example, and the validity of the method is proved by VISSIM simulation.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491

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