信号控制交叉口可变导向车道的研究

发布时间：2018-01-18 16:20

本文关键词：信号控制交叉口可变导向车道的研究　出处：《大连理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着社会经济水平的迅速发展和居民机动车保有量的不断提高,交通拥堵逐渐成为了城市所面临的一大难题,尤其是对大城市而言。城市的不断发展使得城市各个部分承担着不同的城市功能,这使得城市交通流在道路网上的分布呈现出一定的时间和空间差异性。为了适应交叉口内随着时间不断变化的交通流,提出了可变导向车道的概念,它允许对车道功能进行优化协调以充分利用交叉口内的空间资源。本文构建可变导向车道功能与信号配时协同优化模型,对交叉口的时空资源进行优化分配,研究可变导向车道对交叉口的运行效率和安全的影响。本文首先通过对优化模型的目标函数和约束条件的确定,构建可变导向车道功能与信号配时协同优化模型,分别对三相位控制和双环相位控制下单进口道可变导向车道以及双进口道可变导向车道的设置情况进行研究分析,根据不同的相位控制结构对信号相位约束条件进行了模型调整。利用优化模型对处于不同情境、不同交通流量条件下的交叉口进行优化协调,根据结果分析得出可变导向车道对于交叉口的运行效率的影响程度。并且对不同的交叉口参数的变化对于可变导向车道的影响进行研究,如饱和度、相位顺序等,给可变导向车道的应用提出了指导性意见。最后,根据交通冲突技术和替代安全度量方法(Surrogate Safety Measure, SSM)的思想来进行交叉口的安全评价,利用基于微观仿真的替代安全评价模型(Surrogate Safety Assessment Measure, SSAM)对可变导向车道设置前后交叉口的安全性进行对比分析,验证可变导向车道对于交叉口安全性的影响。研究结果表明,可变导向车道的设置能够有效地空间上分配交叉口的通行资源,降低交叉口的车均延误,提高交叉口的运行效率和服务水平。同时,在左转流量较小时,设置可变导向车道前后的交叉口安全性差别较小,但当左转流量增大时,可变导向车道的设置能够降低交通事故发生的可能性和严重程度,显著地改善交叉口的安全性。
[Abstract]:With the rapid development of social and economic level and the continuous improvement of the number of motor vehicles, traffic congestion has gradually become a major problem facing the city. Especially for big cities, the continuous development of cities makes each part of the city bear different urban functions. This makes the distribution of urban traffic flow in the road network presents a certain difference between time and space. In order to adapt to the traffic flow in intersection which changes with time, the concept of variable steering lane is put forward. It allows the optimization and coordination of lane functions to make full use of space resources in intersection. This paper constructs a cooperative optimization model of variable steering lane function and signal timing to optimize the allocation of space-time resources of intersection. This paper studies the effect of variable steering lane on the operation efficiency and safety of intersection. Firstly, this paper determines the objective function and constraint conditions of the optimization model. The cooperative optimization model of variable steering lane function and signal timing is constructed. The setting of three-phase position control and two-ring phase control are studied and analyzed respectively. The signal phase constraints are adjusted according to different phase control structures. The optimal model is used to optimize and coordinate the intersections in different situations and different traffic flow conditions. According to the analysis of the results, the influence degree of the variable steering lane on the operation efficiency of the intersection is obtained, and the influence of different intersection parameters on the variable steering lane is studied, such as saturation. Phase sequence and so on, give the application of the variable steering lane guidance advice. Finally. According to the idea of surrogate Safety measure (SSM), the traffic conflict technology and alternative safety measurement method are used to evaluate the safety of intersection. Surrogate Safety Assessment Measure is used as an alternative security evaluation model based on micro simulation. SSAM) compares and analyzes the safety of the intersection before and after the setting of the variable steering lane, and verifies the influence of the variable steering lane on the safety of the intersection. The setting of the variable steering lane can effectively distribute the traffic resources of the intersection in space, reduce the vehicle delay at the intersection, improve the operation efficiency and service level of the intersection, and at the same time, the flow of the left turn is small. The safety difference of the intersection before and after the setting of the variable steering lane is small, but when the left turn flow increases, the setting of the variable steering lane can reduce the possibility and severity of the traffic accident. Significantly improve the safety of intersections.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.23

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