车速离散影响下高速公路通行能力建模仿真研究

发布时间：2019-04-20 07:57

【摘要】：“交通运输”——由始至终是人类发展进步的重要物质基础。随着国民经济的快速发展，“交通运输”也在迅猛发展着。高速公路——公路交通运输领域的基础，建设耗资巨大。道路通行能力是公路基础建设规模的主要决策依据。因此，对高速公路通行能力进行系统、全面、合理地研究剖析尤为重要。本文针对我国高速公路运行的特殊性，通过对通行能力主要影响因素及其作用特点分析，从宏观的角度总结高速公路车流特性影响源，分析关键因素之间的相互干扰及其影响关系，阐述了车速离散性这一重点影响因素的作用机理。介绍通行能力基本模型发展情况，分析模型变化特点，指出我国高速公路通行能力分析的特殊性。基于元胞自动机模型建立高速公路基本路段通行能力模型，包括道路建模和车辆建模。结合我国高速公路车辆运行规律赋予模型演变规则，研究不同车型、不同换道规则下车流运行状态及演变规律。采用MATLAB软件对所建立模型编程仿真模拟，，通过控制改变输入条件，模拟分析其运行中车速离散性的效用结果、车速离散性和车道变换的作用关系，最终得出不同限制条件下高速公路实际通行能力。本文研究成果有助于高速公路通行能力分析系统化，使得高速公路通行能力更符合我国现实情况。对满足我国现阶段高速公路管理需求及高速公路的近远期规划建设有一定的现实意义。
[Abstract]:Transportation-from beginning to end, is an important material basis for human development and progress. With the rapid development of the national economy, "transportation" is also developing rapidly. Highway-the foundation of the highway transportation field, the construction cost is huge. Road capacity is the main decision-making basis for the scale of highway infrastructure construction. Therefore, it is very important to study and analyze the expressway capacity systematically and reasonably. In view of the particularity of expressway operation in our country, this paper analyzes the main influencing factors of traffic capacity and its function characteristics, and sums up the influence sources of traffic flow characteristics of expressway from the macroscopic point of view. This paper analyzes the mutual interference among the key factors and the relationship between them, and expounds the action mechanism of the key influencing factors, the speed dispersion. This paper introduces the development of the basic capacity model, analyzes the changing characteristics of the model, and points out the particularity of the highway capacity analysis in China. Based on cellular automata model, the capacity model of basic section of expressway is established, including road modeling and vehicle modeling. Combined with the model evolution rules given by the operation law of expressway vehicles in China, the running state and evolution rule of traffic flow under different vehicle types and different lane changing rules are studied. The model was programmed and simulated with MATLAB software. By controlling and changing the input conditions, the utility results of vehicle speed dispersion and the relationship between speed dispersion and lane change were simulated and analyzed. Finally, the actual capacity of expressway under different restriction conditions is obtained. The research results of this paper are helpful to systematize the analysis of expressway capacity and make the expressway capacity more in line with the reality of our country. It is of practical significance to meet the demand of expressway management and the short-term and long-term planning and construction of expressway at the present stage of our country.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491

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