城市主支路交叉口右转交通组织优化研究

发布时间：2018-03-07 07:02

本文选题：主支路交叉口　切入点：交通组织　出处：《吉林大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着社会经济的发展，越来越多的交通管理者意识到必须依靠交通组织来提高城市路网的畅通性和安全性，而交叉口是影响路网通达性的关键节点。本论文从细处入手，对研究较少的城市主支路交叉口这类中小型交叉口开展研究，以期通过对该类交叉口进行交通组织的优化来提高主路的通行能力，从而达到提高整个城市路网的通达性。本论文将主支路交叉口车流的转弯过程作为主要研究对象，重点对研究较少的右转弯车流进行分析，在建立主路右转车流交通状态判别熵模型的基础上，提出相应的右转车流优化方法。论文主要研究内容如下：（1）通过文献阅读与分析，总结了目前常用的交叉口交通组织的内容、方法及步骤等，并指出哪些方法可以适用于主支路交叉口的交通组织。（2）分别从左、右转弯车流的交叉口渠化方法、专用车道的设置等方面开展综述分析，对常用的右转车流的交通组织方法进行了系统的介绍，明确了下一步重点开展右转车流交通组织的研究目标。（3）对主支路交叉口右转车流的交通状态判别开展研究。通过对城市道路交通系统和热力学系统的对比，将热力学的基本理论——熵运用到交通流领域，并在交通流流体理论的基础上建立了熵产生模型。并分析确定指定状态时注入的负熵及其意义，，建立了主-支路交汇处交通系统的总熵模型，从而得到交通状态判别熵模型和需要注入负熵的条件。研究结果表明，熵值越小，道路服务水平越高。（4）在对右转车流进行交通状态判别的基础上，进一步对右转车流交通组织优化方法进行研究。以可插车间隙理论为基础建立模型，对采用提前右转方式的右转车流进行了通行能力、延误等方面的对比分析，同时对直行和左转车流的通行能力情况进行了定性分析，得出了提前右转是主支路交叉口交通组织优化的有效措施的结论。
[Abstract]:With the development of society and economy, more and more traffic managers realize that they must rely on traffic organization to improve the unblocked and safety of urban road network, and the intersection is the key node to influence the road network accessibility. In order to improve the capacity of the main road by optimizing the traffic organization, the paper studies the small and medium-sized intersections such as the urban main branch road intersections, which can improve the accessibility of the whole urban road network. In this paper, the turning process of the traffic flow at the main branch intersection is taken as the main research object, and the analysis of the traffic flow of the right turn which is less studied is focused on, based on the establishment of the entropy model of the traffic state discrimination of the right turn traffic on the main road. The main contents of this paper are as follows:. This paper summarizes the contents, methods and steps of traffic organization at intersections, and points out which methods can be applied to traffic organization of main branch road intersections. 2) the traffic organization methods of right-turn traffic flow are introduced systematically from the following aspects: the method of channelization at the intersection of left and right turn traffic flow, the setting of special lane and so on. Clear the next step to focus on the right-turn traffic organization research objectives. By comparing the traffic system of the urban road traffic system with the thermodynamic system, the basic theory of thermodynamics, entropy, is applied to the traffic flow field. On the basis of the theory of traffic flow fluid, the entropy generation model is established, and the total entropy model of traffic system at the junction of main and branch roads is established by analyzing the negative entropy injected when determining the specified state and its significance. The research results show that the lower the entropy value, the higher the road service level. 4) on the basis of judging the traffic state of right-turn flow, the traffic organization optimization method of right-turn flow is further studied. Based on the theory of pluggable gap, the model is established. The traffic capacity and delay of the right-turn flow with the mode of advance right turn are compared and analyzed. At the same time, the traffic capacity of the direct and left turn traffic flow is qualitatively analyzed. It is concluded that early right turn is an effective measure to optimize traffic organization at main branch road intersection.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491

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