基于基尼系数的高速公路网流量不均衡性研究

发布时间：2018-12-10 13:36

【摘要】：要:受路网结构及沿线经济发展水平等影响,高速公路呈现出流量分布的不均衡性,本研究提出利用基尼系数量化路网流量分布不均衡性,这对全面掌控交通流量分布规律和提高路网的运营效率具有重要意义.首先,本文构建多车型下的高速公路网交通流量分配模型,以计算路径选择概率和断面交通量;其次,综合考虑路网拓扑结构、出行路径选择行为和交通流量等,建立考虑流量分布的高速公路网络特性模型,以反映节点或路段在路网中的重要性;再次,采用基尼系数评估高速公路网流量分布不均衡性;最后,结合山东省区域高速公路网和收费数据进行实例分析.结果表明,采用基尼系数分析高速公路网流量分布不均衡性的方法灵活,能够量化不同空间维度的流量分布不均衡性.
[Abstract]:Because of the influence of the network structure and the level of economic development along the road network, the expressway presents the imbalance of the flow distribution. This study proposes to use the Gini coefficient to quantify the imbalance of the road network flow distribution. It is of great significance to control the distribution of traffic flow and improve the operation efficiency of road network. First of all, this paper constructs the traffic flow distribution model of highway network under multi-vehicle model to calculate the path selection probability and cross-section traffic volume. Secondly, considering the topological structure of the road network, the behavior of route selection and the traffic flow, the highway network characteristic model considering the flow distribution is established to reflect the importance of nodes or sections in the road network. Thirdly, the Gini coefficient is used to evaluate the uneven flow distribution of the expressway network. Finally, combining with the regional highway network and toll data of Shandong Province, the paper makes an example analysis. The results show that the method of Gini coefficient to analyze the disequilibrium of traffic distribution in expressway network is flexible and can quantify the disequilibrium of flow distribution in different spatial dimensions.
【作者单位】：北京交通大学交通运输学院;山东省交通科学研究院;北京交通大学城市交通复杂系统理论与技术教育部重点实验室;
【基金】：山东省交通科技创新计划项目(2012A43)~~
【分类号】：U491

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