基于可达性的用户最优动态交通配流模型研究  

Dynamic user optimum traffic assignment model based on accessibility

作　　者：何胜学[1] 

机构地区：[1]上海理工大学管理学院,上海200092

出　　处：《上海理工大学学报》2005年第3期219-222,228,共5页Journal of University of Shanghai For Science and Technology

摘　　要：以多种已有模型为基础,建立了动态配流流量细化原则,并依据这一原则,在避免估算路段走行时间的情况下构造了一个改进的新模型.该模型的解释性强,具有全局收敛性,并考虑了距离不同带来的可达性的影响.在对该模型最优解条件的充要性进行说明的同时,对新模型的择路机理也予以了推证.By virtue of the principle of detailed traffic flow, a dynamic user optimum traffic assignment model based on accessibility is constructed. Taking advantage of the functional convexity assumption, in the new model estimation of the link cost is avoided. The new model's optimal solution satisfies the sufficient and necessary conditions. The meaning of terms in the objective function and the mechanism of searching route are given out. One of the features of the objective function is that the accessibility from an original node to a destination node is taken into consideration. Some clues for solving the dynamic traffic model based on accessibility can also be found in the article.

关 键 词：动态交通配流 流量细化 可达性 择路机理 

分 类 号：U491[交通运输工程—交通运输规划与管理]