【作者】 黄志鹏；

【导师】 石琴；

【作者基本信息】 合肥工业大学 ， 载运工具运用工程， 2006， 硕士

【摘要】 随着我国社会经济的迅猛发展,交通基础设施发生了前所未有的迅速增长,然而由于交通需求增长的速度大大高于路网通行能力的增长速度,交通拥堵现象日趋严重,交通事故增加,交通问题逐渐成为社会普遍关注的热点和难点问题。如何深入探讨我国交通流动力学特性,建立新型的交通流理论,对指导解决交通拥堵问题至关重要。而交通流元胞自动机模型的出现和发展为交通流理论研究提供了一种新的方向,为交通流动力学理论中系统整体行为与复杂现象的研究提供了一个有效的模型工具。 本文在分析交通流模型及其研究现状的基础上,阐述了交通流元胞自动机模型,并分析了基于时间和加速度影响条件的元胞自动机模型变化特性;分析了车辆折算系数和主干道短距离信号交叉口。具体内容如下: ● 分析了交通流模型和国内外研究现状。主要叙述了交通流车辆跟驰模型和流体动力学模型。并分析了各模型特性。 ● 分析了交通流元胞自动机模型。从一维和二维两个方面入手,对比分析了NS模型和FI模型,并从其模型规则和模拟结果分析了交通流元胞自动机模型可研究方向。 ● 分析了引入时间和加速度影响的交通流元胞自动机模型。从理论分析入手,初步研究了时间对于交通流元胞自动机模型的影响特征。并在基本FI模型基础上引入加速度影响,研究了基于跟驰状态下的元胞自动机模型的最大流量。 ● 分析了车辆折算系数。基于传统的车辆折算系数,从交通规划和交通经济的角度分析了车辆折算系数的变化特性。 ● 研究了基于元胞自动机模型的主干道短距离信号交叉口的配时。有别于以往的元胞自动机模型的长距离交叉口分析,本文引入了短距离交叉口分析,从信号控制方面(非规划和管理方面)去解决短距离交叉口密度为1或0的状态。更多还原

【Abstract】 With the rapid development of social economy in our country, the number of traffic infrastructures has been greatly increased. While as the growth of traffic demand is more rapid than which of road net capacity, the problem of traffic congestion becomes more and more serious, and the number of traffic accidents is increasing, so the traffic problems are considered widely as hot and hard problems. It is vital to solve the traffic congest problems that researching deeply on dynamics characteristic of traffic flow in our country and establishing new-style traffic flow theory. The appear and development of traffic flow cellular automaton model points out a new direction for researching on traffic flow theory, and provides a available model tool for researching on system global behavior and complex phenomena of traffic flow dynamics theory.After generalizing the traffic flow model and its research status, this paper presents the traffic flow cellular automaton model, and studies its variety character based on time and acceleration;researches vehicle conversion coefficient and short distance signal intersection on major road. All above are expatiated as follow:· This paper generalizes the traffic flow model and its research status both home and abroad, which focuses on traffic flow vehicle following model and fluid dynamics model, then analyzes the character of each model.· This paper then analyzes the traffic flow cellular automaton model. NS model and FI model are analyzed comparatively on single dimension and tow dimension, and the research direction of traffic flow cellular automaton model are analyzed from their model rules and simulation results.· This paper also analyzes the traffic flow cellular automaton model based on time and acceleration. The effect character that time affects on the model is preliminary studied from theory, and the maximum flow of cellular automaton model based on following status is studied by introducing acceleration into basic FI model.· This paper analyzes the vehicle conversion coefficient. Variety character of vehicle conversion coefficient is studied from tow aspects of transportation planning and transportation economics based on the traditional vehicle conversion coefficient.· Finally, this paper studies the signal timing on short distance intersection of major road. Being differ from the conventional cellular automaton model which studies the long distance intersection, this paper introduces the research on short distanceintersection, and solves the problem on short distance intersection with the density to be 1 or 0 from aspect of signal control(but not planning and management).更多还原