城市道路平面交叉口渠化与交通导流岛设计参数研究

发布时间：2018-01-12 22:15

本文关键词：城市道路平面交叉口渠化与交通导流岛设计参数研究　出处：《长安大学》2015年硕士论文　论文类型：学位论文

【摘要】：平面交叉口是城市道路的重要组成,也是整个城市道路网的“瓶颈”,平面交叉口处发生拥堵现象和交通事故的概率要远远大于道路路段部分,影响着整条道路,甚至整个城市道路网的功能。平面交叉口的合理设计关系着城市道路的安全性、通行能力和整个路网容量。合理的交通组织和渠化设计可以在投入较少的情况下,达到较好利用平交口时空资源,挖掘道路潜在通行能力的作用,可谓是城市道路建设最具性价比的措施。论文分析了参与平面交叉口交通行为的行人和机非车辆三种主要交通流的出行特征和混合交通下的交通冲突特征,在此基础上论述了平面交叉口交通组织的原则和方法,论述了渠化设计的特点和方法,提出了不同方法的适用性。针对我国现行规范中对鱼肚形导流岛设置左转车道的设计参数规定不明确的问题,将其划分为过渡段、驶入段、减速段和停驻段四个功能段,根据不同设计速度提出了保证行车安全性与舒适性的各功能段长度及设计参数;为了增加鱼肚形导流岛设置左转车道的适用性,提出了奇数车道的设置条件和如何在沿河或山区等曲线较多路段设计鱼肚形导流岛的方法;参考鱼肚形导流岛设置左转车道过渡段长度的研究办法,确定了拓宽进口道设置右转车道的过渡段长度及设计参数;运用停车视距原理得出了拓宽进口道设置右转车道的拓宽段长度;通过实地数据采集建立了VISSIM仿真模型,验证了左、右转渠化设计的应用效果;对于右转导流岛及导流路设计,也根据不同的车辆组合给出了导流路宽度。在标志标线平面示意图的基础上介绍了鱼肚形导流岛设置左转车道、拓宽进口道设置右转车道、右转导流岛及导流路设计中应用到的标志标线,提出了交通工程设计中应该注意的问题,保证交通安全并便于车辆遵循。本文的研究结论为完善城市道路平交口渠化和导流岛的设计提供了参考。
[Abstract]:Intersection is an important component of urban roads, but also the "bottleneck" of the entire urban road network. The probability of congestion and traffic accidents at intersections is far greater than the part of road sections. It affects the function of the whole road, even the whole city road network. The rational design of the intersection is related to the safety of the city road. Capacity and capacity of the whole road network reasonable traffic organization and channelization design can make better use of the space-time resources of the horizontal intersection and excavate the potential capacity of the road under the condition of less investment. It can be described as the most cost-effective measure of urban road construction. This paper analyzes the travel characteristics of pedestrian and non-vehicle traffic flow and the characteristics of traffic conflict under mixed traffic. On this basis, the principles and methods of traffic organization at intersections are discussed, and the characteristics and methods of channelization design are discussed. The applicability of different methods is put forward. Aiming at the problem that the design parameters of the left turning lane are not clear in the current code of our country, it is divided into transition section and driving section. According to the different design speed, the length and design parameters of each functional segment to ensure the safety and comfort of the vehicle are put forward. In order to increase the applicability of the left turning lane, the conditions of setting odd-numbered driveway and the method of designing fish-belly diversion island in more curve sections along river or mountainous area are put forward. Referring to the research method of the length of the transition section of the left turning lane set up on the fish-stomach guide island, the length and design parameters of the transition section of the right turning lane for widening the entrance road are determined. The length of the widening section of the right turning lane is obtained by using the principle of parking sight distance. The VISSIM simulation model is established through the field data collection, and the application effect of the left and right turn canal design is verified. For the design of right-turn guide island and guide road, the width of the guide road is also given according to different vehicle combinations. On the basis of the graphic diagram of marking line, the left turning lane of fish-belly guide island is introduced. The design of the right turning lane, the right turn guide island and the sign mark used in the design of the diversion road are expanded. The problems that should be paid attention to in the traffic engineering design are put forward. The conclusion of this paper provides a reference for the improvement of the design of urban road channel and diversion island.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U412.351

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