考虑换乘的多模式城市交通网络配流问题研究

发布时间：2018-01-21 14:55

本文关键词： 多模式换乘 NL模型交通配流　出处：《西南交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着城市经济的不断发展,小汽车、公交、轨道交通等组成的综合交通系统日益完善。出行者根据不同的需求并结合交通模式本身特点,选择单一模式甚至组合模式出行,这时不可避免会涉及到换乘问题。各个交通模式的相互配合,更有利于提高整个交通系统的运输效率。本文尝试研究考虑了换乘的条件下的多模式城市交通网络配流问题。论文首先引入超网络概念对多模式城市交通网络进行网络描述,为下文根据网络结构特征对各个交通模式的出行者选择进行分析打下基础。根据Dijkstra算法进行最短路径搜索,同时基于图论比较不同有效路径的优劣势并重新定义有效路径,进而根据实际情况给出包括换乘次数的三个约束条件,并运用基于图的遍历算法进行有效路径搜索,大大地提高了运算效率。然后,利用可加费用将广义费用函数分为考虑换乘惩罚的换乘广义费用以及包括时间、货币等影响因素的在乘广义费用,结合虚拟换乘点的扩展网络以及路段阻抗函数的构建原则,分别根据各交通模式自身的特点建立路段阻抗函数。路段阻抗研究的内容包括：小汽车子网连接、公交子网连接以及换乘连接。最后,路径选择以及模式选择过程中出行者的弹性需求用非集计方式进行描述。论文考虑到标准Logit模型的ⅡA特性,选择三层巢式模型对考虑换乘的多模式城市交通网络下的随机用户的需求进行流量均衡分配。层次结构包括路径选择、换乘节点选择、交通模式选择。使用改进MSA算法进行求解并给出相关算例。
[Abstract]:With the continuous development of urban economy, the integrated transportation system composed of cars, public transport, rail transit and so on is becoming more and more perfect. Choosing a single mode or even a combination mode will inevitably involve the problem of transfer. In this paper, we try to study the problem of multi-mode urban traffic network assignment under the condition of transfer. Firstly, we introduce the concept of supernetwork into the multi-mode urban transportation network. Line network description. It lays a foundation for the following analysis of the traffic patterns according to the characteristics of the network structure, and the shortest path search based on the Dijkstra algorithm. At the same time, the advantages and disadvantages of different effective paths are compared based on graph theory, and the effective paths are redefined, and then three constraints including transfer times are given according to the actual situation. Then, the generalized cost function is divided into generalized transfer cost and including time by taking into account the penalty of transfer by using graph based traversal algorithm for effective path search, which greatly improves the computational efficiency. The generalized cost of currency and other influencing factors, combined with the expansion network of virtual transfer point and the construction principle of impedance function of road section. According to the characteristics of each traffic mode, the section impedance function is established. The content of section impedance research includes: car subnet connection, bus subnet connection and transfer connection. Finally. In the process of path selection and mode selection, the flexible demand of travelers is described by disaggregate method. This paper takes into account the characteristics of the standard Logit model. The three-layer nesting model is chosen to distribute the demand of random users in multi-mode urban transportation network considering transfer. The hierarchical structure includes path selection and transfer node selection. Traffic mode selection. The improved MSA algorithm is used to solve the problem and an example is given.
【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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