阴雨天气城市干道交通拥堵形成机理与疏导方法研究

发布时间：2018-06-03 21:01

本文选题：阴雨天气 + 干道　；参考：《重庆交通大学》2014年硕士论文

【摘要】：随着社会发展水平的进一步提高,机动车保有量的快速增长,交通供需矛盾日益突出,城市干道交通拥堵已成为当下人们最为关注和亟待解决的问题。而随着阴雨天气的发生,城市干道交通拥堵态势更加严重,交通延误增大,行车速度较低,拥堵范围扩大,带来时间损失和燃料费用增加。目前,我国普遍城市每年都要经历不同程度的降雨,而对拥堵的相关研究主要集中于正常天气,或者是条件非常恶劣的冰雪天气,为缓解阴雨天气下城市交通拥堵问题,需要对阴雨天气下城市干道交通拥堵形成机理以及疏导方法进行分析研究。论文首先对拥堵的概念、分类、属性、空间分布、等级划分等相关理论进行研究,而后在分析了阴雨天气对路段和交叉口交通流参数影响的基础上,得到阴雨天气下交通流参数的折减系数以及回归方程,通过建立阴雨天气下路段交通流模型、交叉口延误模型等,分别对路段、交叉口、路网拥堵形成机理进行分析。城市干道交通拥堵程度分为畅通、轻度拥堵、中度拥堵和高度拥堵四个等级,随后针对不同的拥堵等级,提出了阴雨天气城市干道不同拥堵程度的疏导方法。其中,构建阴雨天气下的路阻函数,建立了基于路网的动态系统最优分配的城市干道疏导模型是研究的重点。最后,以阴雨天气频繁的重庆南坪环道的干道交通为实例对象,运用仿真软件对拥堵疏导进行动态仿真和结果分析。通过以上研究,论文得到了阴雨天气下城市干道交通拥堵形成机理,和适用于阴雨天气不同拥堵等级的城市干道疏导方法,为缓解阴雨天气下城市干道交通拥堵状况,提供了新的视角和研究方法,对城市干道交通的管理和控制具有重要的理论参考和实践指导意义。在今后的研究中,可以以此为基础,对阴雨天气下的交通流特性、基于路网和基于交叉口的拥堵疏导、阴雨天气下疏导拥堵的控制策略等方面进行更为深入细致的研究。
[Abstract]:With the further improvement of social development, the rapid growth of vehicle ownership, the increasingly prominent contradiction between supply and demand of traffic, traffic congestion in urban trunk roads has become the most concerned and urgent problems. With the occurrence of overcast and rainy weather, the traffic congestion of urban trunk roads becomes more serious, the traffic delay increases, the speed of traffic is lower, the area of congestion expands, and the time loss and fuel cost increase. At present, most cities in China experience different degrees of rainfall every year, and the related studies on congestion mainly focus on normal weather, or very harsh snow and ice weather, in order to alleviate the traffic congestion problem in cities under cloudy and rainy weather. It is necessary to analyze and study the formation mechanism of traffic congestion in urban trunk roads and the method of dredging in rainy weather. In this paper, the concept of congestion, classification, attributes, spatial distribution, classification and other related theories are studied, and then, based on the analysis of the influence of rainy weather on traffic flow parameters of road sections and intersections, the paper analyzes the influence of rain weather on traffic flow parameters of road sections and intersections. The reduction coefficient and regression equation of traffic flow parameters under rainy weather are obtained. By establishing traffic flow model and intersection delay model under rainy weather, the formation mechanism of road section, intersection and road network congestion is analyzed respectively. The traffic congestion degree of urban trunk roads can be divided into four grades: unblocked, mild, moderate and high congestion. Then, aiming at different congestion levels, this paper puts forward a method of dredging different traffic congestion on urban trunk roads in cloudy and rainy weather. The key point of the research is to construct the road resistance function under rainy weather and to establish the optimal allocation model of urban trunk roads based on the dynamic system of road network. Finally, taking the main road traffic of Nanping Ring Road in Chongqing as an example, the dynamic simulation and the result analysis of congestion relief are carried out by using the simulation software. Through the above research, the paper obtains the formation mechanism of urban trunk road traffic congestion under cloudy and rainy weather, and the methods of urban trunk road diversion suitable for different congestion levels in rainy weather, in order to alleviate the traffic congestion situation of urban trunk roads under cloudy and rainy weather, It provides a new perspective and research method, which has important theoretical reference and practical guiding significance for the management and control of urban trunk road traffic. In the future research, we can study the characteristics of traffic flow in rainy weather, traffic congestion based on road network and intersection, and the control strategy of congestion in rainy weather.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491

【相似文献】