城乡结合部平面交叉口安全改善研究

发布时间：2018-11-10 20:05

【摘要】：城乡结合部是城市边缘到乡村地区过渡的地带,该区域内的平面交叉口作为各类交通流交汇的节点,混杂了市区内的区间交通、市区和乡镇间的交通和连接市区和乡镇的交通等,其交通安全状况相对较差,交通事故容易发生。因此,在城乡结合部地区进行平面交叉口交通安全性改善技术研究十分必要。针对城乡结合部平面交叉口事故频发的问题,首先选择重庆市内几种典型交叉口进行实际调查,分析了平面城乡结合部平面交叉口的几何特性、交通管理特性和交通特性。其次采用交通冲突技术,应用灰色关联分析方法分析了城乡结合部平面交叉口安全性各种影响因素,并对其影响性大小进行排序。根据对影响因素的分析,确定平面交叉口交通冲突严重性判定指标,并提出了交通冲突与交通量、车速、左转车比例以及大型车比例之间的关系,分析了城乡结合部平面交叉口安全特性。最后对城乡结合部平面交叉口安全改善进行了研究,提出了安全改善目标、原则以及改善思路,提出了适用于城乡结合区域交叉口的安全改善对策选择方法,并基于驾驶员视觉适宜性及路面高度过渡原理提出了具体的安全改善对策,针对重庆某大桥两头交叉口进行了实例应用,形成了综合安全改善方案,并利用VISSIM进行了仿真验证。通过研究分析,研究成果可有效减少城乡结合部平面交叉口交通冲突,改善了交叉口的安全性,提高了运输效率,对保障城乡结合部平面交叉口安全运营及周边经济的可持续发展有重要意义。
[Abstract]:The urban-rural junction is the transition zone from the urban fringe to the rural area. The intersections in the region serve as nodes for the intersection of various traffic flows and mix up the interval traffic in the urban areas. The traffic safety between the urban area and the township is relatively poor, and the traffic accident is easy to happen. Therefore, it is necessary to improve traffic safety at intersections in urban and rural areas. Aiming at the problem of frequent accidents at the intersection of urban and rural areas, this paper selects several typical intersections in Chongqing to carry on the actual investigation, and analyzes the geometric characteristics, traffic management characteristics and traffic characteristics of the horizontal intersections in the urban and rural areas. Secondly, by using traffic conflict technology and grey relational analysis method, this paper analyzes various factors affecting the safety of urban and rural intersections, and sorts the influencing degree of the intersections. According to the analysis of the influencing factors, the indexes of judging the severity of traffic conflict at intersections are determined, and the relationship between traffic conflict and traffic volume, speed, left-turn ratio and proportion of large vehicles is put forward. The safety characteristics of intersections in urban and rural areas are analyzed. Finally, the paper studies the safety improvement of intersections in urban and rural areas, puts forward the safety improvement objectives, principles and ideas, and puts forward the selection methods of safety improvement countermeasures suitable for the regional intersections of urban and rural areas. Based on the driver's vision suitability and the road height transition principle, the concrete safety improvement countermeasures are put forward, and an example is applied to the intersection of Chongqing Bridge at the two ends, and a comprehensive safety improvement scheme is formed, and the simulation results are verified by VISSIM. Through the research and analysis, the research results can effectively reduce the traffic conflicts at the intersections of urban and rural areas, improve the safety of intersections and improve the transportation efficiency. It is of great significance to ensure the safe operation of the intersection of urban and rural areas and the sustainable development of the surrounding economy.
【学位授予单位】：重庆交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U491.23

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