基于出行时间可靠性的支路网络均衡分析  

Traffic flow equilibrium analysis of branch network based on travel time reliability

作　　者：徐光明[1] 王英姿[1,2] 史峰[1] 秦进[1] 

机构地区：[1]中南大学交通运输工程学院,长沙410075 [2]湖南大学土木工程学院,长沙410082

出　　处：《吉林大学学报（工学版）》2015年第3期755-760,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(U1334207;71171200;71101155)

摘　　要：通过分别描述各类路段通行能力降级参数,在长期习惯性均衡模型基础上,结合双向支路路段通行能力特征对路段出行时间函数进行拓展,构建了基于出行时间可靠性的城市支路网络均衡分析模型。为了克服模型非凸性引起的求解困难问题,将交通分配的常规相继平均法进行分拆,设计了逐个起点分步实施的相继平均法。算例分析结果表明:在不同的可靠度要求下,出行者对干道和支路选择结果存在差异,越保守的出行者选择支路出行的概率越小。Through the description of the degradation parameters of each road section capacity, based on the long time habitual traffic equilibrium model and combining with features of the two-way branch road sections to expand the travel time functions of roads, a traffic flow equilibrium model of branch network based on travel time reliability is constructed. In order to overcome solving difficulties of the model caused by non-convexity, the general method of successive average for solving traffic distribution is broken up one after another, and a method of successive average is designed, which is implemented step by step from the origin points. Example analysis shows that under different reliability requirements, there are differences in the travelers＂ choices of the arterial road sections and the branch road sections, and for more conservative travelers the probability to choose the branch road sections is smaller.

关 键 词：交通运输系统工程 降级支路网络 出行时间可靠性 用户均衡 相继平均法 

分 类 号：U491[交通运输工程—交通运输规划与管理]