城市干道掉头设置研究—以珠海干道为例.docxVIP

PAGE 67 摘 要 随着社会经济发展，城市土地面积不断开发利用，道路交通压力不断加大，城市中出现的交通问题愈加严重。而城市中存在着较多的不规范现象，例如掉头设置问题，缺少相关设置指导文件，导致车辆在行驶过程中产生较多冲突而影响其功能发挥，还会影响道路通行能力等给路段交通带来一定的干扰。为更好解决城市交通压力问题和城市车辆掉头问题，使其更好的发挥功能性，本文对珠海市港湾大道的掉头设置问题展开研究与探讨，分析出最适合该路段掉头的设置方式。 本文首先对城市干道掉头设置现状展开研究，分析城市交通问题所带来的影响及意义，明确提出影响掉头设置的主要因素，得出不同掉头设置方式会导致城市干道的通行效率有所不同，因此，本文选择三种掉头设置方式，即交叉口内部掉头、掉头左转车道居中设置和根据掉头口最短距离模型在交叉口停止线前的中央分隔带设置掉头口三种掉头方式，运用VISSIM微观仿真建模手段进行微观交通仿真比对，在建模后对该路段的交通运行效率进行评价，使用平均排队长度、车均延误时间、车均停车次数、行程时间等各项评价指标，对数据结果展开分析得到最适合城市干道掉头设置的最佳方式。 关键词：城市干道；路段掉头口；交叉口掉头；设置方法；VISSIM仿真 Research on Setting of Urban Arterial Road Turning Around Abstract With the rapid development of the city and the continuous development and utilization of land on both sides of the road, the demand for vehicle turning on the urban arterial road is increasing. However, there are many irregularities in the city, such as turning around setting problem, lack of relevant setting guidance documents, resulting in more conflicts during the driving process, affecting the function of the vehicle, and also affecting the road capacity, which will bring some interference to the road traffic. In order to better solve the problem of urban traffic pressure and vehicle turn around, and make it better functional, this paper discusses and studies the turn around setting of GangWan Avenue in Zhuhai. First of all, this paper analyzes the current situation of the research on the turn setting of urban arterial roads, the impact and significance of urban traffic problems, clearly puts forward the main factors that affect the turn setting, and concludes that different turn setting methods will lead to different traffic efficiency of urban arterial roads. Therefore, this paper chooses three turn setting methods, i.e. the internal turn of the intersection, the center right turn of the left turn lane and the center right turn of the left turn lane According to the shortest distance model of head fall off, three kinds of head fall off ways are set up in the central separation zo