计算机工程 ›› 2010, Vol. 36 ›› Issue (5): 1-3.doi: 10.3969/j.issn.1000-3428.2010.05.001

• 博士论文 •    下一篇

基于实测流量的局域路网随机分配模型

杜豫川,耿媛婧,孙立军   

  1. (同济大学道路与交通工程教育部重点实验室,上海 200092)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-03-05 发布日期:2010-03-05

Stochastic Assignment Model for Regional Road Network Based on Real-time Traffic Volume

DU Yu-chuan, GENG Yuan-jing, SUN Li-jun   

  1. (Key Lab of Road and Traffic Engineering, Ministry of Education, Tongji University, Shanghai 200092)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-03-05 Published:2010-03-05

摘要: 针对城市局域路网所能获取的出行需求条件通常是重要交叉口的流量数据,而不是完整的出行OD矩阵的特点,在分析城市道路转弯比例时变稳定性的基础上,采用交叉口转弯比例作为重要参数,建立基于蒙特卡罗随机系统模拟思想的局域路网交通分配模型,并给出局域路网仿真分配系数矩阵的计算方法。将该模型在实际路网中进行应用测试,分配流量与实测数据的比对结果验证了该方法的适用性。

关键词: 局域路网, 流量分配, 蒙特卡罗法, 转弯比例

Abstract: The available travel demand data in local urban road network generally are traffic volume data of important intersections, and are not integrated OD matrix. In view of this point, this paper proposes a traffic assignment model for local area road network based on Monte-carlo method. Considering the good stability in temporal sequence, intersection turning ratio is adopted as the important parameter of this model. The formulation for local area road network assignment problem is proposed on the assumption of random Monte-carlo simulation. The compute process of traffic assignment coefficient matrix for local area road network is provided. The traffic assignment model based on Monte-carlo method is used in traffic analysis for an actual urban road network. Results comparing surveying traffic volume data and calculation volume data verify applicability and validity of the proposed methodology.

Key words: regional road network, traffic volume assignment, Monte-carlo method, turn ratio

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