信号控制环形交叉口时空资源协同优化方法研究
发布时间：2018-08-24 07:17
【摘要】：环形交叉口时空资源配置失衡导致其通行效率降低,因此论文以城市道路信号控制环形交叉口为研究对象,研究其时空资源的协同优化方法,对进一步挖掘环形交叉口的通行效率、缓解城市交通拥堵具有理论意义和实用价值。论文首先界定了环形交叉口的物理空间范围,提出了功能空间范围的概念和空间长度计算方法；总结归纳了环形交叉口常用的信号控制方式,分析了不同信号控制方式的控制逻辑和交通运行规则；提出了环形交叉口时间资源要素和空间资源要素的筛选原则,提炼了时空要素的优化重点；依托实地调研数据,研究了信控环交的车辆到达规律、车辆离去特征和车速分布特性。借鉴协同理论阐述了时空资源协同优化的内涵,论证了该理论在信号控制环形交叉口时空资源优化的适用性；提出以提高“通行效率”作为时空资源优化的目标,细化了“效率”的目标子集,给出了对应的评价指标以及相应的优化原则。研究了环形交叉口的交通冲突特性,运用停车线法和冲突点法,考虑环道容量的限制,分别给出了双信号控制和单信号控制环形交叉口理论通行能力的计算方法；分析了信号控制交叉口车辆的延误过程,运用车辆到达——离去曲线,考虑左转车辆行程时间、第一和第二停车线左转绿灯相位差等因素的不同,提出了双信号控制和单信号控制环形交叉口停车延误的计算方法。采用相位优先次序图设计了双信号控制和单信号控制环形交叉口的相位相序,采用同步优化策略,分别从配时参数、车道功能、通行能力三个方面将时空要素转化为约束条件集合,以周期时长最小、延误最小作为模型的目标函数,将时空优化问题转化为非线性规划问题进行求解。
[Abstract]:Due to the imbalance of space-time resources allocation in circular intersection, the traffic efficiency is reduced. Therefore, the paper studies the coordinated optimization method of space-time resources in urban road signal-controlled roundabout. It is of theoretical significance and practical value for further excavating the efficiency of circular intersection and alleviating urban traffic congestion. Firstly, the physical space range of annular intersection is defined, the concept of functional space range and the calculation method of space length are put forward, and the common signal control methods of circular intersection are summarized. This paper analyzes the control logic and traffic operation rules of different signal control methods, puts forward the screening principles of time and space resource elements of roundabout intersection, abstracts the key points of optimization of space-time elements, and relies on field investigation data. The vehicle arrival law, vehicle departure characteristics and speed distribution characteristics of signal-controlled loop intersection are studied. This paper expounds the connotation of cooperative optimization of space-time resources based on synergy theory, demonstrates the applicability of this theory in the optimization of space-time resources at signal-controlled intersections, and puts forward the goal of optimizing space-time resources by improving "traffic efficiency". The target subset of "efficiency" is refined, and the corresponding evaluation index and corresponding optimization principle are given. The traffic conflict characteristics of circular intersection are studied. The theoretical capacity calculation methods of double signal control and single signal control are given by using parking line method and conflict point method. In this paper, the process of vehicle delay at signal-controlled intersection is analyzed. By using the vehicle arrival departure curve, the different factors such as the travel time of the left-turn vehicle, the phase difference of the first and second parking lines, etc., are taken into account. Two signal control and one-signal control loop intersection parking delay calculation method is proposed. The phase sequence of double signal control and single signal control ring intersection is designed by using phase priority diagram. In the three aspects of capacity, the space-time element is transformed into a set of constraints, and the minimum period and delay are taken as the objective function of the model, and the space-time optimization problem is transformed into a nonlinear programming problem to be solved.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.23
本文编号：2200032
[Abstract]:Due to the imbalance of space-time resources allocation in circular intersection, the traffic efficiency is reduced. Therefore, the paper studies the coordinated optimization method of space-time resources in urban road signal-controlled roundabout. It is of theoretical significance and practical value for further excavating the efficiency of circular intersection and alleviating urban traffic congestion. Firstly, the physical space range of annular intersection is defined, the concept of functional space range and the calculation method of space length are put forward, and the common signal control methods of circular intersection are summarized. This paper analyzes the control logic and traffic operation rules of different signal control methods, puts forward the screening principles of time and space resource elements of roundabout intersection, abstracts the key points of optimization of space-time elements, and relies on field investigation data. The vehicle arrival law, vehicle departure characteristics and speed distribution characteristics of signal-controlled loop intersection are studied. This paper expounds the connotation of cooperative optimization of space-time resources based on synergy theory, demonstrates the applicability of this theory in the optimization of space-time resources at signal-controlled intersections, and puts forward the goal of optimizing space-time resources by improving "traffic efficiency". The target subset of "efficiency" is refined, and the corresponding evaluation index and corresponding optimization principle are given. The traffic conflict characteristics of circular intersection are studied. The theoretical capacity calculation methods of double signal control and single signal control are given by using parking line method and conflict point method. In this paper, the process of vehicle delay at signal-controlled intersection is analyzed. By using the vehicle arrival departure curve, the different factors such as the travel time of the left-turn vehicle, the phase difference of the first and second parking lines, etc., are taken into account. Two signal control and one-signal control loop intersection parking delay calculation method is proposed. The phase sequence of double signal control and single signal control ring intersection is designed by using phase priority diagram. In the three aspects of capacity, the space-time element is transformed into a set of constraints, and the minimum period and delay are taken as the objective function of the model, and the space-time optimization problem is transformed into a nonlinear programming problem to be solved.
【学位授予单位】：东南大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.23
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