基于路段的环境目标系统最优动态交通分配模型

发布时间：2018-05-17 17:19

  本文选题：动态交通分配 + 系统最优　； 参考：《合肥工业大学》2017年硕士论文

【摘要】：动态交通分配理论作为智能交通系统项目的核心技术基础之一,在交通问题的研究中有着一定的应用。随着对交通问题研究的深入,环境因素愈发成为交通管理部门运输规划和政策制定的重要影响因子之一。本文以尾气排放作为研究的环境目标,考虑单一目的地交通网络的系统最优动态交通分配问题。本论文的研究工作主要包括以下三个方面:首先,我们采用阶梯型函数近似表示单个路段的累计流量,进而将路段累计流入量依据其驶出路段的时刻分解为多个分部流量。依据不同的车辆分类假设构建了两种离散时间的尾气排放模型,并通过数值算例验证了两种尾气排放模型的精确性。其次,本文基于路段传输模型构建了单一目的地交通网络的环境目标系统最优动态交通分配模型,以最小化总的系统排放作为优化的目标。在基于路段传输模型的动态交通流约束的基础上,考虑了无滞留约束以及路段累计流量分解约束,最终模型被构建成一个混合整数线性规划问题。任何基于平均速度的尾气排放模型都可以应用在本文提出的模型当中,并通过数值算例验证了提出模型的性能。最后,本文在以上提出模型的基础上,考虑在路段传输模型中添加速度限制策略,将多等级速度限制的选择构建成混合整数线性规划问题,并考虑了速度限制条件下的无滞留约束。提出了三种速度限制方案以及相应的系统最优动态交通模型,并通过数值算例验证了模型的限速效果。
[Abstract]:As one of the core technologies of Intelligent Transportation system (its), dynamic Traffic assignment Theory (DTA) has been applied in the research of traffic problems. With the development of traffic research, environmental factors have become one of the most important factors in transportation planning and policy making. In this paper, the problem of optimal dynamic traffic assignment for a single destination transportation network is considered. The research work of this paper mainly includes the following three aspects: firstly, we use the ladder function to approximate the cumulative flow of a single section, and then decompose the cumulative inflow of the section into multiple partial flows according to the time when it leaves the road. According to different vehicle classification assumptions, two discrete time emission models are constructed, and the accuracy of the two models is verified by numerical examples. Secondly, based on the road transport model, the optimal dynamic traffic assignment model of the environment target system based on the single destination traffic network is constructed, with minimizing the total system emissions as the optimization objective. On the basis of the dynamic traffic flow constraints based on the road transport model, the model is constructed into a mixed integer linear programming problem by considering the non-retention constraints and the decomposition constraints of the cumulative flow of the road sections. Any exhaust emission model based on average velocity can be applied to the model proposed in this paper, and the performance of the proposed model is verified by numerical examples. Finally, on the basis of the above proposed model, this paper considers adding speed restriction strategy to the section transmission model, and constructs the choice of multi-class speed limit into mixed integer linear programming problem. The non-retention constraint is considered under the condition of velocity limit. Three speed limiting schemes and the corresponding optimal dynamic traffic model are proposed, and the effectiveness of the model is verified by numerical examples.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491

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