作者：郑元勋；甘露

第一作者单位：郑州大学水利与环境学院

摘要：为缓解城市道路交叉口处左转车流对交叉口通行能力带来的压力,通过对十字交叉路口及现有环形交叉路口交通流线的分析,基于环形交叉口提出部分左转立体化的概念设计:将4条道路中向左转车流较多的2条左转车道进行立体化:通过将部分左转车流从交叉口分流出去,从而缓角环形交叉口的交通混乱状况。利用VISSIM软件针对无信号控制交叉口和有信号控制交叉口分别进行仿真分析,证实了左转立交式环形交叉口车流通行较普通环形交叉口具有明显优势。

Abstract：In order to mitigate impact of turn left flow on the tralfic capacity in urban intersection.Portion of three dimensional turn left is proposed based on the analysis of cross intersection and the existing roundabout traffic flow line.Two of four left-turn lane road with traffic jam were under three-dimensional processed.By streaming out left part of the traffic from the intersection, the traffic chaos of the roundabout is reduced.Simulation analysis is done by VISSIM software on non-signalized intersections and signalized intersections respectively confirmed that the left roundabout interchange design has obvious advantages than ordinary roundabout.

基金：中国博士后面上基金资助项目(20110491008)；河南省交通运输厅科技攻关项目(2013-2-12)；河南省交通运输厅科技攻关项目(2014K37-2)；国家级大学生创新创业实践项目(201610459029)；

关键词：十字交叉;环形交叉口;城市道路交叉口;VISSIM软件;

DOI：10.16186/j.cnki.1673-9787.2017.05.019

分类号：U412.352