交通运输系统工程与信息

交通运输系统工程与信息 ›› 2017, Vol. 17 ›› Issue (5): 112-121.

• 系统工程理论与方法 • 上一篇    下一篇

考虑排队阻滞和换道的改进宏观交通流模型

鄢小文1，徐建闽*1,2，荆彬彬1，王宇俊3   

  1. 1. 华南理工大学土木与交通学院，广州510640；2. 东南大学现代城市交通技术江苏高校协同创新中心，南京210096； 3. 深圳市城市交通规划设计研究中心有限公司，广东深圳518021
  • 收稿日期:2017-06-01 修回日期:2017-08-11 出版日期:2017-10-25 发布日期:2017-10-30
  • 作者简介:鄢小文（1990-），女，湖北荆门人，博士生.
  • 基金资助:

    国家自然科学基金/National Natural Science Foundation of China（61203164,61174184）, 广东省科技计划项目/ Science and Technology Planning Project of Guangdong Province (2016A030305001, 2015A030401024)

Improved Macroscopic Traffic Flow Model Considering Intersection Blocking and Vehicle Lane Changing

YAN Xiao-wen 1, XU Jian-min 1, 2, JING Bin-bin 1,WANG Yu-jun 3   

  1. 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; 2. Jiangsu Province Collaborative Innovation Center of Modern Urban Traffic Technologies, Southeast University, Nanjing 210096, China; 3. Shenzhen Urban Transport Planning Center, Shenzhen Key Laboratory of Traffic Information and Traffic Engineering, Shenzhen 518021, Guangdong, China
  • Received:2017-06-01 Revised:2017-08-11 Online:2017-10-25 Published:2017-10-30

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摘要：

考虑路段上车辆换道及交叉口处排队阻滞作用，对交通流宏观演化模型进行改进.首先在排队中考虑不同车道的速度、密度差异，建立了换道模型；然后在交叉口内部划分各流向排队车辆的累积路径，分析不同的排队溢出位置对其他车流的阻滞影响；综合考虑车辆换道及交叉口处阻滞影响，建立了改进的车道组宏观交通流模型；最后设计仿真实验对模型进行验证.结果表明，在高流量需求下，本文模型能够模拟出下游的排队溢出对其他车流的阻滞影响；且在低中高3 种不同的流量需求下，改进模型计算结果与仿真输出的驶离流量基本相符，与原有模型相比精度更高；由此证实了改进模型的准确性.

关键词: 交通工程, 宏观交通流模型, VISSIM仿真, 排队阻滞, 车辆换道

Abstract:

An improved macroscopic traffic flow model is proposed considering the influence of vehicle lane changing and vehicle blocking. Firstly, a lane changing model is established considering different speed and density in different lanes. Then, through dividing vehicle accumulation path of queuing, the impact of different queue spill locations on the other flows is described. And an improved model is established based on the lane changing phenomenon and vehicle blocking effect. Finally, a simulation experiment is carried out to verify the effectiveness of the model. The results show that the value of output flow from simulation is basically consistent with the calculated results under three different flow demands. And the model can precisely simulate the impact of downstream queuing overflow on other traffic flows under high traffic demand, thus confirming the accuracy of the improved model.

Key words: traffic engineering, macroscopic traffic flow model, VISSIM simulation, queue blocking, lane changing

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