交通运输系统工程与信息 ›› 2008, Vol. 8 ›› Issue (4): 70-76 .

• 系统工程理论与方法 • 上一篇    下一篇

降级路网的多类用户均衡分配模型及求解算法

史峰*;罗端高   

  1. 中南大学 交通运输工程学院, 长沙 410075
  • 收稿日期:2007-12-28 修回日期:2008-04-29 出版日期:2008-08-25 发布日期:2008-08-25
  • 通讯作者: 史峰
  • 作者简介:史峰(1956-),男,湖南芷江人,教授,博士生导师.
  • 基金资助:

    教育部科学研究重点项目(106124).

Model and Solution Algorithm for Multiclass User Equilibrium Assignment Problem in a Degradable Road Network

SHI Feng; LUO Duan-gao   

  1. School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China
  • Received:2007-12-28 Revised:2008-04-29 Online:2008-08-25 Published:2008-08-25
  • Contact: SHI Feng

摘要: 基于出行者对网络不确定性的风险态度,将出行者分为三类:保守型,冒险型和中庸型。分析了旅行时间随机扰动的降级路网中不同用户类的出行选择行为,建立了与出行者选择均衡条件等价的变分不等式模型,讨论了模型解的性质,并设计了求解模型的算法。算例表明不同风险态度的出行者在降级路网中的路径选择行为存在较大差异,而且不同风险态度的出行者对不同交通状况及管理措施的响应也存在较大差异。这一研究将有助于加深对交通行为的理解,为交通管理者设计各种有效的控制措施提供更准确和具有针对性的决策辅助信息。

关键词: 交通工程, 降级路网, 出行负效用, 多类用户, 均衡分配

Abstract: This paper proposes a multiclass user equilibrium assignment model for ascertaining the difference in travel choice behavior of different user classes in a degradable road network. In the proposed model, on the basis of travelers’ risk attitudes toward network uncertainty, all travelers are categorized into three classes: risk-averse travelers, risk-prone travelers, and risk-neutral travelers. The multiclass user network equilibrium conditions are presented and formulated as a variational inequality (VI) model, and a heuristic solution algorithm for solving the VI model is given. An example is used to illustrate the application of the proposed model and solution algorithm. This study will help to understand heterogeneous travelers’ route choice behavior and can serve as a useful tool for evaluating the effects of various transport policies on different user classes at the strategic level.

Key words: traffic engineering, degradable road network, travel disutility, multiclass users, equilibrium assignment

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