换乘约束下城市多方式交通分配模型与算法

基于超网络理论构建了可换乘条件下城市多方式交通系统的超网络模型,同时基于所建超网络,在考虑出行者的换乘规律和换乘行为等因素下,定义了可行超路径.将超网络的路段划分为行驶路段、换乘路段、上网路段和下网路段等4类,考虑出行时间、货币费用及舒适度感受3种因素,建立各类路段的广义费用函数及超路径广义费用函数.基于超路径费用,定义了有效超路径.在此基础上,提出城市多方式交通系统的随机平衡分配模型,并且提出了换乘约束下有效超路径和最短可行超路径的搜索算法.最后,通过一个数值算例说明所提出方法的可行性和有效性.

Urban Multi-modal Traffic Assignment Model and Algorithm under Transfer Constrain

On the basis of super network theory, a super network model of the urban multi-modal traffic system is established under the transferable condition, and the feasible hyper-path is defined considering the travel rules, behaviors and other factors of travelers. The super network link is divided into travel link, transfer link, boarding link and alighting link. Considering the factors of travel time, cost and degree of comfort, the generalized cost function and generalized hyper-path cost function are established for all links. Effective hyper- path is defined based on the path cost. On the basis of this, a stochastic equilibrium assignment model of urban multimodal traffic system as well as the search algorithms of effective hyper-path and the shortest feasible hyper- path is proposed under transfer conditions. Finally, a numerical example is presented to illustrate the proposed method.