城市环形交叉口通行能力改善方法研究——以达州市新世纪广场环形交叉口为例

A dissertaion on the methods improving the capacity of roundabout case study

环形交叉口是城市道路的重要组成部分,具有重要的作用。然而随着城市交通需求的不断增加,环形交叉口的通行效率也逐渐的满足不了城市交通的需要,缺点逐步暴露出来。分别对环形交叉口和信号控制环形交叉分别进行了研究,对环形交叉口的常见改善方法进行了总结归纳。并以达州市通川区新世纪广场交叉口为例,详细分析了该类复杂多路环形交叉口的改善方案。

Roundabout is a significant part of the city road system, playing an important role in urban areas. However, with the city＇ s rapid development, roundabouts are gradually not able to satisfy the demand of urban traffic, exposing many shortcomings. This paper mainly focuses on the roundabout with no signal control and signal control respectively and summa- rizes several methods of the roundabout reconstruction. Finally, based on the study of New Century Square roundabout inter- section in county of Tongchuan, Dazhou city, reconstruction methods for multi - direction intersection are analyzed in detail.