对称式移位左转交叉口优化设计与仿真  

Optimization Design and Simulation of Symmetrical Displaced-Left Intersection

作　　者：王满福 潘福全 张丽霞 卢刚 杨晓霞 杨金顺 WANG Manfu;PAN Fuquan;ZHANG Lixia;LU Gang;YANG Xiaoxia;YANG Jinshun(School of Mechanical and Automotive Engineering,Qingdao University of Technology,Qingdao 266520,China;Qingdao Municipal Engineering Design Institute,Qingdao 266061,China)

机构地区：[1]青岛理工大学机械与汽车工程学院,青岛266520 [2]青岛市市政工程设计院,青岛266061

出　　处：《交通工程》2023年第3期44-51,56,共9页Journal of Transportation Engineering

基　　金：国家自然科学基金(62003182);山东省自然科学基金(ZR2020MG021);社会科学研究规划基金(18YJAZH067)

摘　　要：为了解决传统交叉口左转与直行车辆存在的交通冲突问题,提出了1种改进的移位左转交叉口的设置方法.综合考虑对称式移位左转交叉口的运行性能,进一步分析了交叉口预信号与主信号之间的协同控制关系,设计对称式移位左转交叉口的渠化模型,改进双向控制移位左转交叉口的相位方案,构建了计算优化模型,其中包括DLT专用车道长度,左转车辆存储车道长度、左转渐变段长度.运用VISSIM软件进行仿真,利用石家庄市某交叉口收集的数据进行验证,分别从车辆平均延误、停车次数、排队长度3个方面对移位左转方案进行效用分析.实验结果表明:采用双向控制的对称式移位左转交叉口与原交叉口相比,排队长度降低57.79%,平均延误降低49.86%,停车次数降低40.14%,提高了交叉口总体通行效率,获得较好的安全效益和通行效益.In order to solve the traffic conflict between left-turn and straight-going vehicles at traditional intersections,an improved setting method of displaced left-turn intersections was proposed.Considering the performance of the symmetric displace left intersection,further analysis of the intersection signal in advance and the main signal coordinated control of the relationship between symmetric displace left intersection highly channelizing design model,and improve the two-way control scheme of the phase displace left intersection,build up the relevant calculation optimization model,including the DLT lane length,Left-turn vehicles store lane length,and left-turn gradient section length.Using VISSIM software for simulation,using the data collected at an intersection in Shijiazhuang city for verification,respectively from the average vehicle delay,stop times,queuing length of three aspects of the displace-left program utility analysis.The experimental results show that:compared with the original intersection,the symmetrical displacing left-turn intersection with two-way control can reduce the queue length by 57.79%,the average delay by 49.86%,and the number of stops by 40.14%.It can effectively improve the overall traffic efficiency of the intersection,and obtain better safety benefits and traffic benefits.

关 键 词：交通工程 双向控制 对称式交叉口 移位左转 VISSIM仿真 

分 类 号：U491.2[交通运输工程—交通运输规划与管理]