中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (6): 73-78.doi: 10.16265/j.cnki.issn1003-3033.2018.06.013

• 安全系统学 • 上一篇    下一篇

多车道城市快速路交织区拥堵形成机制

陈亮1 副教授, 何志超1,2, 李巧茹1 副教授, 何涛3   

  1. 1 河北工业大学 土木与交通学院,天津 300401;
    2 北京交通大学 交通运输学院,北京 100044;
    3 交通运输部科学研究院,北京 100029
  • 收稿日期:2018-03-10 修回日期:2018-05-05 出版日期:2018-06-28 发布日期:2020-11-25
  • 作者简介:陈亮(1978—),男,天津人,硕士,副教授,主要从事交通工程、智能交通系统、交通规划等方面的研究。E-mail:karlchen@126.com。
  • 基金资助:
    国家自然科学基金资助(51678212);河北省高等学校科学技术研究项目(QN2018231)。

Study on congestion mechanism in multi-lane weaving section ofurban expressway

CHEN Liang1, HE Zhichao1,2, LI Qiaoru1, HE Tao3   

  1. 1 School of Civil and Transportation,Hebei University of Technology,Tianjin 300401,China;
    2 School of Traffic and Transportation,Beijing Jiaotong University,Beijing 100044,China;
    3 China Academy of Transportation Sciences,Beijing 100029,China
  • Received:2018-03-10 Revised:2018-05-05 Online:2018-06-28 Published:2020-11-25

摘要: 为缓解日益严重的城市快速路交织区拥堵现象,重点考虑临时驶出车辆的影响,结合车辆变道安全间距、变道决策等因素,建立基于元胞自动机(CA)的多车道交织区离散模型,仿真模拟饱和状态下多车道交织区交通流演变过程,分析交织区拥堵的形成机制;通过仿真试验与实际道路交通量的比较,对模型予以初步验证。结果表明:该模型能够更加合理地重现交织区车流运行情形,常规驶出车辆与临时驶出车辆对交织区车流影响较大,其中车辆临时驶出具有突发性,对交织区系统流量干扰严重;交织区长度对其通行能力有影响,为使交织区通行能力最大化,其长度应不小于150 m。

关键词: 城市快速路, 交织区, 交通流, 变道行为, 元胞自动机(CA), 交通仿真

Abstract: To alleviate the ever severer congestion problem in weaving section of urban expressway,a discrete model of multi-lane weaving section was built based on CA and consideration of the influences of temporary driving-out vehicles,the factors of vehicle lane-changing safety clearance and lane-changing behaviors.Furthermore,simulation experiments of the evolution of traffic flow in multi-lane weaving section under saturated condition were carried out,and a formation mechanism of congestion in the weaving section was analyzed.The model was preliminarily validated by comparing the traffic obtained by the simulation experiments and that in actual statistics.It is shown that the model of multi-lane weaving section can reproduce the traffic flow in the weaving section more reasonably,that the regular driving-out vehicles and the temporary driving-out vehicles have great influences on the traffic flow in the weaving section,that among them,the temporary driving-out vehicles are characterized with suddenness,which has a serious impact on the capacity of the weaving section,and that in order to maximize the capacity of the weaving section,whose length should not be less than 150 m.

Key words: urban expressway, weaving section, traffic flow, lane-change, cellular automaton model(CA), traffic simulation

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