基于改进元胞传输模型的城市区域路网建模与仿真分析
发布时间：2019-06-10 02:49
【摘要】：元胞传输模型作为一种典型的交通流宏观仿真模型，为城市道路路网交通流的研究提供了行之有效的方法。本论文以西安市某区域路网为研究对象，利用可变元胞传输模型构建区域路网模型，通过仿真模拟和分析不同交通条件下的交通流现象，作为改进和评价交通管理方案的依据。论文的主要研究工作和成果如下： （1）根据元胞传输模型的原理和交通流特点，详细阐述了元胞传输模型模拟交通流的过程，建立了路段交通流的元胞传输仿真模型，模拟和分析了自由流和拥堵两种状态。 （2）设计了一种考虑回滞现象的可变元胞传输模型，并对简单路段进行了仿真设计和分析，结果表明，，该模型更贴合实际，符合交通流的实测现象。 （3）对城市区域路网的交通流特征进行了分析，建立了基于可变元胞传输模型的仿真模型，并以车辆平均延误时间最小目标，设计了交叉口渠化方法和信号配时算法，仿真研究了拥堵及自由流状态下的交通流演化规律及特征。结果表明，该算法可以提升路段整体效率和通行能力
[Abstract]:As a typical macro simulation model of traffic flow, cellular transmission model provides an effective method for the study of traffic flow in urban road network. In this paper, a regional road network in Xi'an is taken as the research object, and the regional road network model is constructed by using the variable cell transmission model. The traffic flow phenomenon under different traffic conditions is simulated and analyzed as the basis for improving and evaluating the traffic management scheme. The main research work and achievements of this paper are as follows: (1) according to the principle of cellular transmission model and the characteristics of traffic flow, the process of simulating traffic flow by cellular transmission model is described in detail, and the cellular transmission simulation model of road section traffic flow is established. Two states of free flow and congestion are simulated and analyzed. (2) A variable cell transmission model considering the lag phenomenon is designed, and the simulation design and analysis of the simple road section are carried out. the results show that the model is more practical and accords with the measured phenomenon of traffic flow. (3) the traffic flow characteristics of urban area road network are analyzed, and the simulation model based on variable cell transmission model is established, and the intersection canalization method and signal timing algorithm are designed with the target of minimizing the average delay time of vehicles. The evolution law and characteristics of traffic flow under congestion and free flow are simulated and studied. The results show that the algorithm can improve the overall efficiency and traffic capacity of the road section.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491
本文编号：2496107
[Abstract]:As a typical macro simulation model of traffic flow, cellular transmission model provides an effective method for the study of traffic flow in urban road network. In this paper, a regional road network in Xi'an is taken as the research object, and the regional road network model is constructed by using the variable cell transmission model. The traffic flow phenomenon under different traffic conditions is simulated and analyzed as the basis for improving and evaluating the traffic management scheme. The main research work and achievements of this paper are as follows: (1) according to the principle of cellular transmission model and the characteristics of traffic flow, the process of simulating traffic flow by cellular transmission model is described in detail, and the cellular transmission simulation model of road section traffic flow is established. Two states of free flow and congestion are simulated and analyzed. (2) A variable cell transmission model considering the lag phenomenon is designed, and the simulation design and analysis of the simple road section are carried out. the results show that the model is more practical and accords with the measured phenomenon of traffic flow. (3) the traffic flow characteristics of urban area road network are analyzed, and the simulation model based on variable cell transmission model is established, and the intersection canalization method and signal timing algorithm are designed with the target of minimizing the average delay time of vehicles. The evolution law and characteristics of traffic flow under congestion and free flow are simulated and studied. The results show that the algorithm can improve the overall efficiency and traffic capacity of the road section.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491
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本文编号：2496107
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