双车道公路弯坡路段交通安全评估及处治措施研究

发布时间：2018-01-08 08:36

本文关键词：双车道公路弯坡路段交通安全评估及处治措施研究　出处：《重庆交通大学》2014年硕士论文　论文类型：学位论文

【摘要】：我国双车道公路线性标准较低、双向车流相互干扰等问题致使交通安全隐患较多，尤其在弯坡路段因车速、视距、交通管理等原因更容易成为交通事故高发区，随着交通流量的不断增加，安全问题更加凸显。在道路交通“十二五”规划中也明确提出重点排查二、三级公路弯道、坡道、弯坡组合路段等安全隐患点段和事故多发路段，实施综合整治。因此，双车道公路弯坡路段的道路交通安全问题已经成为重点整治区域。在资金、时间等多方面限制因素的影响下，如何客观地评估弯坡路段的危险程度以及确定整治先后次序已成为亟待解决的技术问题。所以，针对双车道公路弯坡路段进行安全评估研究，确定弯坡路段的安全等级，提出相应的整治措施，从而为公路养护建设管理者的决策提供有效支撑，具有重要的理论意义和实践价值。本文针对双车道公路弯坡路段道路存在的安全问题，通过对影响交通安全要素的分析，表明人、车、路和环境四个因素对双车道公路弯坡路段的道路交通安全产生最主要的影响作用。通过对弯坡路段道路交通安全影响因素的分析，建立了基于道路条件的安全评估指标体系，并定义了各指标取值的方法；综合考虑决策者主观因素和实测数据的客观特点，采用熵值法和序关系法相结合的组合赋值法来确定评估指标的权重值；建立了一种基于指标值位置和指标值分布情况相结合的密度有序加权几何平均算子，对评估结果进行集结；通过分析各个指标的取值范围，明确了评估等级的划分方法。通过对重庆某双车道公路弯坡路段进行实例验证，结果表明该种方法能够较为客观地反映双车道公路弯坡路段的交通安全状态。表明该种评估方法能够应用于对双车道公路弯坡路段的评估，为道路交通安全管理者提供决策支持。最后分析山区弯坡路段道路产生交通安全事故的各种原因，，提出了双车道公路弯坡路段的安全改善的具体措施。
[Abstract]:In the 12th Five - Year Plan of Road Traffic , it is also pointed out that the problems of road traffic safety have become an important area for traffic accidents . Therefore , the traffic safety problem of double - lane highway curved slope section has become a priority area . Therefore , it is important to make a safe assessment study on the road slope section of double - lane highway . Therefore , it is important to provide effective support for the decision - making of highway maintenance and construction manager , and has important theoretical significance and practical value . Based on the analysis of the factors affecting traffic safety , this paper points out that the four factors influencing traffic safety are the most important influence on road traffic safety of double - lane highway . Based on the analysis of the influencing factors of road traffic safety , a safety assessment index system based on road conditions is established , and the method of evaluating each index is defined . The weighted value of the evaluation index is determined by combining the subjective factors of decision makers and the objective characteristics of the measured data , and a density ordered weighted geometric mean operator based on the combination of the index value position and the index value distribution is adopted , and the evaluation result is assembled ; and the dividing method of the evaluation grade is defined by analyzing the value range of each index . The results show that the method can objectively reflect the traffic safety status of the double - lane highway slope section . The results show that the method can be applied to the evaluation of double - lane highway slope section and provide decision support for road traffic safety management . Finally , the reasons of traffic safety accidents caused by road traffic accidents in mountainous areas are analyzed , and the concrete measures for improving the safety of double - lane highway slope sections are put forward .

【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】：U492.8

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