过饱和状态下干道群动态交通信号协调控制研究

发布时间：2018-04-18 09:38

本文选题：过饱和 + 协调控制　；参考：《昆明理工大学》2015年硕士论文

【摘要】：随着机动车保有量的不断增加,而相应的道路基础设施的增长有限且缓慢,导致交通污染日益严重,交通拥堵现象频发,过饱和交通状态已逐渐成为常态。如何采取有效措施来缓解过饱和交通拥堵现象已成为当今交通研究的热点问题。本文从过饱和交通信号控制入手,针对过饱和交通研究现状的不足,结合过饱和交通以及干道群的特征,在过饱和状态特性分析、控制小区划分以及干道群动态协调控制策略建立等方面进行了相关的研究,主要研究内容包括以下几个方面：1.通过分析不同过饱和交通对象,对过饱和交通定义进行了阐述,利用实际数据分析了过饱和交通状态下绿灯时间利用率较高、进口道排队车辆滞留、停车延误显著增加等交通特性。2.过饱和干道群控制小区划分方法的提出。本文将过饱和干道控制小区划分过程分为两步：第一步,首先以交叉口通行能力利用率ICU对瓶颈交叉口的识别,然后以边界控制交叉口及瓶颈交叉口作为小区源,以交叉口关联度作为量化指标对交叉口的进行初步分区；第二步,在第一步交通控制小区划分的基础上,以干道优先权重对控制小区进一步划分。3.当干道群协调控制区域中出现瓶颈交叉口时,此时表明干道群内已经发生过饱和交通现象,若仅仅对其瓶颈交叉口采取协调控制策略已经不能达到理想的缓解交通压力的目的。所以,为了能尽快的缓解瓶颈交叉口的交通压力,本文提出“基于干道边界控制及过饱和排队长度的干道群协调控制策略”。4.本文提出了干道群动态协调控制总协调时间段与子协调时间段的概念,并以实际数据为基础对总协调时间段与子协调时间段的确定进行了分析研究。5.论文运用VISSIM仿真软件,以保山市隆阳区干道路网为例,分别对基于本文提出的控制小区划分方法的干道群协调控制模型、仅考虑干道权重为控制小区划分的干道群协调控制模型以及现状信号协调控制方案进行分析比较,以停车次数及延误时间等指标作对比,验证了本文研究成果的有效性。
[Abstract]:With the increasing number of motor vehicles and the limited and slow growth of the corresponding road infrastructure, traffic pollution becomes more and more serious, traffic congestion occurs frequently, and the supersaturated traffic state has gradually become the normal.How to take effective measures to alleviate oversaturated traffic congestion has become a hot issue in traffic research.This paper starts with the signal control of supersaturated traffic and analyzes the characteristics of supersaturated traffic under the condition of supersaturated traffic considering the characteristics of supersaturated traffic and trunk roads.The related research on the division of control area and the establishment of dynamic coordinated control strategy of trunk road group is carried out. The main research contents include the following aspects: 1.By analyzing different supersaturated traffic objects, the definition of supersaturated traffic is expounded, and the utilization ratio of green time is high under the condition of supersaturated traffic.Parking delay significantly increased the traffic characteristics. 2. 2.Supersaturated trunk road group control district division method proposed.In this paper, the supersaturated road control area is divided into two steps: firstly, the bottleneck intersection is identified by capacity utilization ratio (ICU), and then the boundary control intersection and bottleneck intersection are used as the cell source.The correlation degree of intersection is taken as the quantitative index to divide the intersection preliminarily; the second step, on the basis of the first step of the division of traffic control area, the main road priority is used to divide the control area further. 3.When the bottleneck intersection appears in the coordinated control area of the trunk road group, the phenomenon of supersaturated traffic has already occurred in the trunk road group. If only the coordinated control strategy is adopted for the bottleneck intersection, the purpose of alleviating traffic pressure can not be achieved.Therefore, in order to alleviate the traffic pressure of bottleneck intersection as soon as possible, this paper puts forward the coordinated control strategy of trunk road group based on the boundary control of trunk road and the length of over-saturated queue.In this paper, the concept of total coordinated time period and subcoordinated time period in dynamic coordinated control of trunk road group is proposed. Based on the actual data, the determination of total coordinated time period and subcoordinated time period is analyzed and studied.Taking the trunk road network in Longyang District of Baoshan City as an example, the coordinated control model of the trunk road group based on the method of division of the control area proposed in this paper is presented in this paper.The coordinated control model of trunk road group divided by the weight of main road and the current signal coordination control scheme are analyzed and compared. The validity of the research results is verified by comparing the parking times and delay time.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.54

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