多类型动态广义出行费用随机用户平衡模型  

Dynamic Generalized Travel Cost Stochastic User Equilibrium Model with Multiple Classes

作　　者：李小静[1] 刘林忠[1] 

机构地区：[1]兰州交通大学交通运输学院,兰州730070

出　　处：《武汉理工大学学报（交通科学与工程版）》2015年第6期1100-1104,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目资助(批准号:71361018;61563029)

摘　　要：为研究多类型出行者在实际路网上的路径选择行为,提出了动态广义出行费用概念,假设路网随机降级交通需求为弹性,并且出行者以感知的最小广义费用为出行依据,在此基础上构造了多类型随机用户平衡模型,设计了相继平均算法求解.在一个测试路网上进行了算例分析,结果表明:熟悉路况的出行者容易选择到费用较小的路径;路况熟悉程度、权重系数,以及规定阈值均对平衡分配结果有很大影响,且结果与实际经验相符合,验证了模型的实用性.To study route choice behavior of multiple class travelers on actual road network, the conception of dynamic generalized travel cost was proposed. There are some assumptions that road network are degradable, traffic demand are elastic, and travelers choose their optimal routes while their generalized travel costs are minimized. On this basis, a stochastic user equilibrium model with multiple classes was established, and a method of successive average （MSA） was designed to solve the model. The analyses of numerical example were conducted on a test road network, and the results show that travelers who familiarity with road conditions are easy to choose the less cost route, and degree of familiarity with road condition, weight coefficient and given threshold have great influences on traffic assignment. The results are consistent with actual experiences, so the practicability of the model is verified.

关 键 词：交通工程 动态广义费用 多类型出行者 随机用户平衡 路径选择 

分 类 号：U491[交通运输工程—交通运输规划与管理]