基于TCT的城市道路十字交叉口安全评价研究

发布时间：2018-01-04 23:31

本文关键词：基于TCT的城市道路十字交叉口安全评价研究　出处：《长安大学》2016年硕士论文　论文类型：学位论文

【摘要】：城市十字交叉口作为城市道路的连接节点,是城市路网的重要组成部分,各种交通流在交叉口进行分流,若协调不当极易发生交通事故。为了进行交叉口交通安全改善,首先需要探讨影响交叉口安全的因素,找出可能导致交叉口交通事故的致因。长期以来,往往利用已有的事故进行影响因素致因分析,但是事故的偶然性、稀缺性导致了分析结果的滞后性,鉴于交通冲突与交通事故的发生过程相似,被称为“准事故”,因此本文利用交通冲突技术(traffic conflict technique,TCT)来代替交通事故进行影响因素分析。在总结交通冲突技术应用成果的基础上,本文利用实地调研获得的交通冲突数据运用统计分析的方法对各种数据进行分析比对,得出相关结论,本文的研究内容如下:1、对利用交通冲突技术分析城市平面交叉口影响因素的可行性及有效性进行叙述,通过总结交通冲突理论得出严重冲突的辨别标准。2、制定交通冲突的具体调研方案并制定交通冲突调研表,选取了西安市15个平面交叉口,获取了487个严重冲突数据,进行了数据的统计分析工作。3、对各种类型的交叉口进行交通流特性分析,在交通流分析的基础上进一步分析了各种交通冲突形态的产生机理,将交叉口处的交通冲突分为五种类型。4、对所获取的交通冲突数据进行影响因素分析,本文主要针对实际产生交通冲突的原因进行主成分分析,得出影响城市十字交叉口交通安全的主要影响因素,在此基础上按照车速、信号灯设置方式(倒计时、非倒计时等)、相位设置、违法行为分类进行方差分析,得出交通冲突的显著性影响因素。5、运用模糊C均值聚类(fuzzy c-means,FCM)的方法对15个交叉口进行安全等级评定,得出相应的安全水平。同时针对数据分析所得出的城市平面交叉口影响因素作出改善对策分析,为改善城市十字交叉口交通安全提出合理化建议。
[Abstract]:As a connecting node of urban road, urban cross intersection is an important part of urban road network. In order to improve the traffic safety of intersections, it is necessary to explore the factors that affect the safety of intersections, and find out the possible causes of traffic accidents at intersections for a long time. The existing accidents are often used for cause analysis, but the accident contingency and scarcity lead to the lag of the analysis results, in view of the similar process between traffic conflicts and traffic accidents. It is called "quasi-accident", so traffic conflict technique is used in this paper. On the basis of summarizing the application results of traffic conflict technology, TCTs are used instead of traffic accidents to analyze the influencing factors. This paper makes use of the traffic conflict data obtained from the field investigation to analyze and compare the various data by using the statistical analysis method, and draws the relevant conclusions. The research content of this paper is as follows: 1. This paper describes the feasibility and effectiveness of using traffic conflict technology to analyze the influencing factors of urban intersections, and obtains the distinguishing standard of serious conflict by summarizing the traffic conflict theory. 2. Make the specific investigation plan of traffic conflict and make the traffic conflict investigation table, select 15 intersections in Xi'an, obtain 487 serious conflict data, carry on the statistical analysis of the data. 3. Based on the analysis of traffic flow characteristics of various types of intersections, the mechanism of traffic conflicts is further analyzed, and the traffic conflicts at intersections are divided into five types. 4. Based on the analysis of the influence factors of the traffic conflict data, this paper mainly analyzes the causes of the traffic conflicts, and obtains the main factors that affect the traffic safety of the urban intersections. On this basis, according to the speed, signal setting (countdown, non-countdown, etc.), phase setting, illegal behavior classification of variance analysis, the traffic conflict significant impact factors. 5. Fuzzy c-means-FCM-based fuzzy C-means clustering method is used to evaluate the safety grade of 15 intersections. At the same time, according to the influence factors of urban intersections obtained by data analysis, the improvement countermeasures are analyzed, and some reasonable suggestions are put forward to improve the traffic safety of urban intersections.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U491.23

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