城市高架路出口匝道设置及与相邻交叉口协调控制研究

发布时间：2018-03-08 15:06

本文选题：城市高架快速路　切入点：出口匝道　出处：《西南交通大学》2015年硕士论文　论文类型：学位论文

【摘要】：城市快速路在城市交通体系中居于主体地位,是城市路网的骨架,担负着大量中长距离的快速交通任务。但是随着城市经济社会的不断发展,交通出行量日益增长,城市快速路的交通拥挤问题日益显现,城快速路原先所具备的优势有所弱化。导致城市快速路交通拥堵的原因很多,其中出口匝道处车辆无法及时得到疏解而使排队回溯至快速路主线是比较突出的问题,值得重点研究解决这一问题的方法。本文以高架快速路出口匝道、出口匝道与相衔接交叉口之间的衔接段以及相衔接的下游交叉口为研究对象,从出口匝道设置和控制两个方面入手研究解决高架快速出口匝道拥堵的方法。本文首先着重对出口匝道的拥堵原因、落地点与地面道路的衔接位置以及控制方法做出分析,并简要介绍了可能性转移矩阵理论和公交预信号控制方法,为后面的研究奠定基础。在出口匝道设置方面着重利用可能性转移矩阵理论分析了出口匝道衔接段最小长度的计算方法。在出口匝道的控制方面,从考虑相交道路的交通效益出发,通过改变排队检测器的布设位置,基于绿灯相位延长和绿灯相位提前激活方法,提出了可接受排队长度控制策略；在出口匝道落地点处的地面道路上增设第二信号灯的前提下,以排队长度为约束条件设计了出口匝道的协调控制策略；最后利用公交预信号的控制思想,通过公交优先与匝道车辆优先的对应关系,设计了基于公交预信号控制思想的出口匝道控制策略。本文借助VISSIM软件对上述控制策略进行了验证,得到了以下结论：出口匝道排队检测器布设在出口匝道落地点处比其布设在论文所提出的可接受排队长度处时,在出口匝道车辆的优先驶出方面具有优越性,而可接受排队长度控制策略在兼顾相交道路的交通效益方面相较于把排队检测器布设在出口匝道落地点处的控制策略更具有优越性。
[Abstract]:Urban expressway is the backbone of urban road network, which plays the main role in the urban transportation system. But with the development of urban economy and society, the amount of traffic travel is increasing day by day. The problem of urban expressway traffic congestion is becoming increasingly apparent, and the advantages of urban expressway have been weakened. There are many reasons for urban expressway traffic congestion. It is a prominent problem that the vehicles at the exit ramp can not be cleared up in time so that the queue can be traced back to the main line of the expressway, so it is worth studying the method to solve this problem emphatically. In this paper, the exit ramp of the elevated expressway is used to solve the problem. The link between the exit ramp and the intersecting intersection, as well as the downstream intersection connected with each other, is the object of study. From two aspects of exit ramp setting and control, this paper studies the methods to solve the congestion of elevated rapid exit ramp. Firstly, this paper analyzes the reasons of the congestion of the exit ramp, the connection position between the landing location and the ground road, and the control methods. The theory of possibility transfer matrix and the method of bus pre-signal control are briefly introduced. To lay the foundation for the following research. In the aspect of ramp setting, the method of calculating the minimum length of the exit ramp junction is analyzed by using the possibility transfer matrix theory. In the aspect of the control of the exit ramp, the method of calculating the minimum length of the exit ramp is analyzed. Considering the traffic efficiency of intersecting roads, an acceptable queue length control strategy is proposed by changing the location of the queue detector, and based on the method of extending the green phase and activating the green phase ahead of time. On the premise of adding a second signal light on the ground road at the exit ramp landing place, the coordinated control strategy of the exit ramp is designed with the queue length as the constraint condition, and finally, the idea of bus pre-signal control is used. Based on the corresponding relation between bus priority and on-ramp vehicle priority, an exit ramp control strategy based on bus pre-signal control is designed. The above control strategy is verified by VISSIM software. The following conclusions are obtained: when the exit ramp queue detector is arranged at the exit ramp landing place, it has advantages in the priority exit of the exit ramp vehicle when it is placed at the acceptable queue length proposed in the paper. The acceptable queue length control strategy is more advantageous than the one where the queue detector is arranged at the exit ramp location in terms of considering the traffic efficiency of intersecting roads.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.54

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