道路网衔接结构对机动车交通流量分布影响研究

发布时间：2019-03-28 06:14

【摘要】：对于城市地面综合交通系统而言,道路网是其最为重要和基础的骨架和依托,城市交通可持续发展的重要基础条件就是有一个结构合理、功能完善、容量充足且与城市主导交通模式相协调的道路网系统。然而,现代社会城市交通问题日益严重,这不仅影响了城市的经济建设和社会发展,也给人们的生活和工作带来了诸多不便。而道路网布局规划不合理、道路等级划分不明、对道路网交通规律认识不足等都是造成交通问题的一部分原因,要解决交通问题首先必须对道路网进行全面深入的研究。针对道路网的衔接结构,有必要确定描述路网结构的方法和指标,并分析路网的结构特性对机动车流量分布的影响,为未来的城市路网规划、缓解城市交通拥堵提供理论依据和技术支持。本文首先采用对偶法将道路网抽象成为拓扑结构,确定评价道路网衔接结构的三个重要指标：点度中心度、邻近中心度、介数中心度。其次从空间认知的角度分析路网结构特性对路径选择的影响,从而影响机动车交通流量的分布。然后通过五个城市的实例数据统计分析道路网衔接结构的三个指标与交通流量指标总车公里的一元线性回归,得到介数中心度与总车公里的相关性最大。同时通过分析不同路网的研究范围得到路线介数中心度的变化情况,进而分析不同研究范围对路网结构预测机动车流量的影响,建议研究路网结构对交通流量分布的影响应尽量采用较大路网研究范围。
[Abstract]:For urban ground integrated transportation system, road network is its most important and basic skeleton and support. The important basic condition of sustainable development of urban traffic is to have a reasonable structure and perfect function. A road network system with sufficient capacity and coordination with urban dominant traffic patterns. However, the urban traffic problem is becoming more and more serious in modern society, which not only affects the economic construction and social development of the city, but also brings many inconvenience to people's life and work. However, unreasonable layout planning of road network, unclear classification of road grade and insufficient understanding of the traffic law of road network are a part of the causes of traffic problems. In order to solve the traffic problems, a comprehensive and in-depth study of the road network must be carried out first. In view of the connecting structure of road network, it is necessary to determine the method and index to describe the structure of road network, and to analyze the influence of the structural characteristics of road network on the distribution of vehicle flow, so as to plan the urban road network in the future. Alleviate urban traffic congestion to provide theoretical basis and technical support. In this paper, the dual method is used to abstract the road network into a topological structure, and three important indexes for evaluating the link structure of the road network are determined: the centrality of points, the centrality of proximity, and the centrality of meso-numbers. Secondly, from the perspective of spatial cognition, this paper analyzes the influence of road network structure characteristics on path selection, thus affecting the distribution of vehicle traffic flow. Then the univariate linear regression between the three indexes of the road network connection structure and the traffic flow index is analyzed by the example data of five cities, and the maximum correlation between the meso-centrality and the total vehicle-km is obtained. At the same time, by analyzing the research scope of different road networks, the change of the median centrality of the route is obtained, and then the influence of different research ranges on the prediction of vehicle flow in the road network structure is analyzed. It is suggested that the study of the influence of road network structure on traffic flow distribution should be carried out within a larger road network as far as possible.
【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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