快速路匝道连接段交通信号协同控制关键技术研究

发布时间：2018-01-07 05:43

本文关键词：快速路匝道连接段交通信号协同控制关键技术研究　出处：《华南理工大学》2014年博士论文　论文类型：学位论文

【摘要】：城市快速路是城市中大运量快速交通干道，为了保证城市快速路“快速、畅通”的特性，交通管理部门通常在快速路入口匝道采取限流控制措施，以此抑制过大的快速路交通需求。此类方法虽然在一定程度上提高了快速路的运行效率，但却将拥堵转移至与快速路衔接的城市辅路干道。入口匝道处车辆排队延伸至地面道路，会严重影响地面道路交通的正常通行，本文在入口匝道控制研究的基础上，针对干道协调控制的三个关键性问题进行研究，继而基于递阶优化思想，建立快速路匝道与多交叉口群控制准系统最优协同优化模型，并进行仿真和实例验证。完成的主要科研工作与研究成果概括如下：首先，在详细分析了国内外城市快速路匝道控制的研究现状及现有匝道研究方法的基础之上，研究了快速路与辅路路面交叉口群的协同控制需求问题，凝练了快速路匝道与辅路交叉口群协同控制的关键性问题，并提出了快速路匝道与辅路交叉口群协同控制理念。其次，对快速路匝道连接段类型、入口匝道控制的类型及控制效果进行分析，研究了入口匝道的主线优先控制、入口匝道交替通行和入口匝道信号控制策略，提出了基于支持向量机的入口匝道控制改进算法，并通过对广州市的实例分析，证明改进算法可满足城市快速路上不断变化的交通控制需求。然后，针对辅路干道协调控制的关键性问题进行了研究，在子区划分方面，建立了子区划分模型，确定了子区快速划分的流程，并提出了协调控制子区动态划分方法；在考虑动态红灯排队消散时间模型方面，提出了考虑动态红灯消散时间的相位差计算方法，并对MAXBAND模型进行了改进；在相位相序优化方面，建立了左转早断与滞后相序对带宽的影响模型。最后通过实例验证了上述三个相应关键性问题的解决方案的可行性。接着，将递阶优化思想引入协同控制，建立了快速路匝道与辅路多交叉口群控制的准系统最优协同优化模型，考虑快速路匝道控制与交叉口群控制的协同关系，并考虑路网交通流拥挤程度的变化引起的两者对交通流的不同役使作用，利用序参量公式，确定快速路匝道控制与交叉口群控制性能参数的加权系数，并通过有序度函数进行优化。在模型求解过程中，采用相邻两个控制周期作为一个大周期，提出了大周期下的控制策略优化迭代计算方法，从而保证了控制策略的连续性和继起性，实现了快速路匝道与路面交叉口群的动态协同。最后，选取广州市内环路一段为研究对象，根据对研究目标的实际调查分析，构建了快速路匝道与路面交叉口群协同控制仿真模型，对微观交通仿真模型的各参数进行了标定，仿真模拟不同的交通状况下的出入口匝道拥堵状况，，并分别针对协同方法以及不采取控制策略时进行仿真比较，通过实例仿真验证了本文模型方法的可行性。
[Abstract]:City expressway is a large capacity rapid transit corridors in the city, in order to ensure the city expressway "fast, characteristic of smooth, usually taken in the traffic administrative department of the expressway entrance ramp current limiting control measures, in order to suppress the expressway traffic demand. This kind of method is to a certain extent and improve the operation efficiency of the expressway, but congestion transfer to the city roads and expressways connecting roads. Line extends to the ground road entrance ramp vehicles, will seriously affect the normal traffic traffic, based on the study of the entrance ramp control, research on the three key problems of arterial road coordinate control, then based on hierarchical optimization idea, establishing expressway ramp and multi intersection control group quasi system optimum collaborative optimization model, and the simulation and verification. The main research work and achievements Summarized as follows:
First of all, on the base of detailed analysis on domestic and foreign research status of city expressway on ramp control and the ramp of existing research methods, the research of collaborative control demand of Expressway and crossing the road intersection group, concise expressway ramp and auxiliary road intersection group cooperative control problem, and puts forward the expressway ramp and auxiliary road intersection group cooperative control concept.
Secondly, on the expressway ramp connection type, analysis type entrance ramp control and the control effect, the main line of the first entrance ramp control, entrance ramp and entrance ramp alternating traffic signal control strategy, put forward the entrance ramp support vector machine control based on improved algorithm, and through examples of analysis of Guangzhou certificate the improved algorithm can meet the demand of city expressway traffic control on changing.
Then, aiming at the key problems of auxiliary road coordination control are studied in the sub area division, established a sub area division model, the sub area division of the rapid process, and put forward the coordinated control sub area dynamic division method; considering the dynamic queue dissipation model, considering the phase dynamic light dispersing time difference calculation method, and the MAXBAND model was improved; in phase optimization, set up the left early break and lag phase on bandwidth model. Finally, the example verifies the feasibility of the solution of the three corresponding key problems.
Then, the hierarchical optimization theory into cooperative control, collaborative optimization model is established for the expressway ramp and auxiliary road intersection group control quasi system optimum, considering the expressway ramp control and intersection group synergy control, different slaving part considering the change of traffic flow in the road network congestion caused by the traffic flow, the use of the order parameter formula, determine the expressway ramp control and intersection group weighted coefficient of control parameters, and through the order function optimization. In the process of solving the model, the two adjacent control cycle as a cycle, is proposed to optimize the iterative control strategy and calculating method of large cycle, so as to ensure the continuity and following control strategy, to achieve the dynamic pavement of expressway ramp and intersection Group Co.
Finally, select a ring road in Guangzhou city as the research object, according to the practical investigation and Analysis on the research target, the construction of expressway ramp and road intersection group collaborative control simulation model, the parameters of microscopic traffic simulation model was calibrated, simulation of different traffic conditions under the ramp congestion, respectively. According to the collaborative method and do not take control strategies are simulated, the simulation proved the feasibility of this method.

【学位授予单位】：华南理工大学
【学位级别】：博士
【学位授予年份】：2014
【分类号】：U491.54

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