基于限制路径集的N-路径随机用户均衡模型构建及性质  

Construction and properties of N-path stochastic user equilibrium model based on limited path set

作　　者：刘建美[1] LIU Jianmei(Department of Mathematics,Jining University,Jining 273155,China)

机构地区：[1]济宁学院数学系,山东济宁273155

出　　处：《武汉大学学报（工学版）》2019年第3期240-243,共4页Engineering Journal of Wuhan University

基　　金：国家自然科学基金项目(编号:71401061)

摘　　要：结合随机用户均衡和N-路径用户均衡两类模型的优点构建了N-路径随机用户均衡模型,以路径流量作为决策变量讨论了解的最优性条件,得到了解所满足的性质.然后以路段流量和路径流量同时作为决策变量证明了最优解的存在唯一性条件.最后在多种不同的假设条件下利用内点算法对模型进行了求解,对于解的性质进行了验证,并通过对算例结果的分析得到了若干有效的结论,进而验证了所构建模型的合理性和实用性.An N-path stochastic user equilibrium(NPSUE) model is constructed by combining the stochastic user equilibrium and N-path user equilibrium. First, the mathematical programming of the NPSUE is given. The optimality conditions and property of optimal solution are discussed based on path flow variables. Then the existence and uniqueness for the NPSUE model are proved based on both the link flow variables and path flow variables. Finally, the model is solved by interior-point algorithm under different conditions. Several useful conclusions are obtained by the analysis of the results, which proves the rationality and practicability of the proposed model.

关 键 词：限制路径集 N-路径随机用户均衡 内点算法 交通配流 

分 类 号：U491[交通运输工程—交通运输规划与管理]