平面交叉口综合待行区的交通组织优化设计研究
发布时间：2018-08-07 07:54
【摘要】：在过去二十年里,中国进入了一个非常快速的城市化进程阶段,以惊人的速度向外扩张形成城市蔓延。在城市化进程大发展中我们享受了中国经济腾飞的红利以及城市基础设施交通系统的完善优化,城市道路路网纵横交错,极大地提高了我们日常出行的便利性和可达性,但是我们也面临城市化发展带来的人口红利所带来的严重交通拥堵问题,我们的城市像摊大饼一样,在这种城市发展模式背后,我们的城市总体规划是以小汽车为导向,这导致我们的城市道路在现有的道路资源供给中是供不应求的,我们迫切需要对城市道路进行交通组织优化设计,提高我们道路以及交叉口时空利用率。论文总结了四种非传统交通组织优化设计方案,分别为借用对向左转车道CLL(Contraflow left-turn lane)设计方法、串联"Tandem"组织优化设计方法、结合公交优先策略的预信号设计应用和EFT(Exit-lanes for left-turn)出口式-左转交通模式。提出了 一种基于自适应控制的主预信号相协调控制的综合待行区交通组织优化方法,创新性提出了多种控制策略和根据实时的交通状况动态选择不同的策略应用方法,并结合公交优先设计出了不同的交通组织策略,得到了预信号设计的第一层控制流程和不同策略实时切换的第二层控制流程的自适应算法。考虑到交通流特性的时空动态变化,通过车辆检测技术,结合ITS技术,提出了动态选择最有利于当前道路运行状态的策略控制方法。总结归纳了策略控制方法的几何条件、交通条件、参数条件和设施条件。提出了控制算法的关键性评价指标:人均延误。通过VISSIM实例交叉口仿真论证策略的适用性并得到了评价指标分析,当道路通行流量较大,综合待行区交通组织优化设计可以较大幅度提高其通行能力。当公共汽车发车频率较高且公共汽车与小汽车乘客载客率之比较大时,设置有公交优先的交通组织方法对提高道路通行能力、减小人均延误有显著变化。最后论文总结了主要研究成果和未来这一方向研究的展望和进一步深入有待挖掘完善的研究内容。
[Abstract]:In the past two decades, China has entered a very rapid stage of urbanization, expanding at an alarming rate to form urban sprawl. In the great development of urbanization, we have enjoyed the dividend of China's economic take-off and the improvement and optimization of urban infrastructure and transportation system. The urban road network has crisscrossed and greatly improved the convenience and accessibility of our daily travel. But we are also facing serious traffic congestion caused by the demographic dividend of urbanization. Our city is like a pie cake, and behind this urban development model, our urban master plan is driven by cars. As a result, our urban roads are in short supply of existing road resources. We urgently need to optimize the traffic organization of urban roads and improve the space-time utilization ratio of our roads and intersections. In this paper, four kinds of non-traditional traffic organization optimization design schemes are summarized. They are borrowing the CLL (Contraflow left-turn lane design method of the left-turn lane, and the series "Tandem" organization optimization design method. Combined with the application of pre-signal design of bus priority strategy and EFT (Exit-lanes for left-turn) exit-left-turn traffic mode. In this paper, a new method of traffic organization optimization based on the coordinated control of main presignal phase based on adaptive control is proposed. A variety of control strategies and dynamic selection of different strategy application methods based on real-time traffic conditions are proposed. Combined with bus priority, different traffic organization strategies are designed, and the first layer control flow of pre-signal design and the adaptive algorithm of the second layer control flow with different strategies are obtained. Considering the temporal and spatial dynamic changes of traffic flow characteristics, a strategy control method which is most beneficial to the current road running state is put forward by vehicle detection technology and ITS technology. The geometric condition, traffic condition, parameter condition and facility condition of the strategy control method are summarized. The key evaluation index of the control algorithm, the per capita delay, is proposed. The applicability of the strategy is demonstrated by the VISSIM example and the evaluation index is analyzed. When the traffic flow is large, the traffic capacity can be greatly improved by the optimization design of traffic organization in the waiting area. When the frequency of bus departure is high and the passenger carrying rate of bus and car is high, the traffic organization method with bus priority can improve the road capacity and reduce the delay per capita. Finally, the paper summarizes the main research results and future research prospects and further research content to be excavated.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.23
本文编号：2169371
[Abstract]:In the past two decades, China has entered a very rapid stage of urbanization, expanding at an alarming rate to form urban sprawl. In the great development of urbanization, we have enjoyed the dividend of China's economic take-off and the improvement and optimization of urban infrastructure and transportation system. The urban road network has crisscrossed and greatly improved the convenience and accessibility of our daily travel. But we are also facing serious traffic congestion caused by the demographic dividend of urbanization. Our city is like a pie cake, and behind this urban development model, our urban master plan is driven by cars. As a result, our urban roads are in short supply of existing road resources. We urgently need to optimize the traffic organization of urban roads and improve the space-time utilization ratio of our roads and intersections. In this paper, four kinds of non-traditional traffic organization optimization design schemes are summarized. They are borrowing the CLL (Contraflow left-turn lane design method of the left-turn lane, and the series "Tandem" organization optimization design method. Combined with the application of pre-signal design of bus priority strategy and EFT (Exit-lanes for left-turn) exit-left-turn traffic mode. In this paper, a new method of traffic organization optimization based on the coordinated control of main presignal phase based on adaptive control is proposed. A variety of control strategies and dynamic selection of different strategy application methods based on real-time traffic conditions are proposed. Combined with bus priority, different traffic organization strategies are designed, and the first layer control flow of pre-signal design and the adaptive algorithm of the second layer control flow with different strategies are obtained. Considering the temporal and spatial dynamic changes of traffic flow characteristics, a strategy control method which is most beneficial to the current road running state is put forward by vehicle detection technology and ITS technology. The geometric condition, traffic condition, parameter condition and facility condition of the strategy control method are summarized. The key evaluation index of the control algorithm, the per capita delay, is proposed. The applicability of the strategy is demonstrated by the VISSIM example and the evaluation index is analyzed. When the traffic flow is large, the traffic capacity can be greatly improved by the optimization design of traffic organization in the waiting area. When the frequency of bus departure is high and the passenger carrying rate of bus and car is high, the traffic organization method with bus priority can improve the road capacity and reduce the delay per capita. Finally, the paper summarizes the main research results and future research prospects and further research content to be excavated.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U491.23
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