道路交通网络脆弱性动态辨识方法

发布时间：2018-05-16 06:05

本文选题：交通规划 + 交通网络　；参考：《交通运输工程学报》2014年05期

【摘要】：分析了路段和节点的流量传播过程与离散的瞬时动态用户最优路径选择均衡条件,建立了反应型的动态用户均衡网络交通流模型,设计了对角化的启发式算法求解模型,评价了动态化的道路网络脆弱性指数。分析结果表明:在自由流速度为40km·h-1、堵塞密度为125veh·km-1的9节点12路段构成的算例路网中,在时刻3路段1受损时,路段3在高峰时的车辆数量从原有的50veh增加到了100veh,入口流量增加1倍,路段2的入口流量降为0;在路段3、6、7和10构成的路径上,路段1受损使得此路径的车辆数将近增加1倍,车辆数量的增加导致各路段的阻抗增加。提出的方法能刻画车辆绕开受损路段的交通流传播过程,能有效辨识道路网络在各个路段各个时刻的脆弱性。
[Abstract]:This paper analyzes the flow propagation process of road sections and nodes and discrete equilibrium conditions of optimal path selection for transient dynamic users, establishes a reactive dynamic user equilibrium network traffic flow model, and designs a diagonal heuristic algorithm for solving the model. The dynamic vulnerability index of road network is evaluated. The results show that in the example road network composed of 9 nodes and 12 sections with free flow velocity of 40km h-1 and clogging density of 125veh km-1, when 3 section 1 is damaged, During the rush hour, the number of vehicles increased from the original 50veh to 100veh.Inlet flow doubled, and the flow at the entrance of section 2 decreased to zero. On the path composed of sections 3, 6, 6, 7 and 10, the number of vehicles on this route was nearly doubled because of damage to section 1. The increase in the number of vehicles leads to an increase in the impedance of each section of the road. The proposed method can describe the traffic flow propagation process of vehicles bypassing the damaged road sections and can effectively identify the vulnerability of road networks at various times.
【作者单位】：苏州大学城市轨道交通学院;华中科技大学管理学院;
【基金】：国家自然科学基金项目(51108289) 江苏省自然科学基金项目(10KJB580003) 国家社会科学基金项目(13&ZD175)
【分类号】：U491.13

【参考文献】