十字型交叉口远引左转设置方法及通行能力研究  

Research on the Setting Method and Traffic Capacity of the Left Turn at the Cross-shaped Intersection

作　　者：纪超 杨春霞[1] 李梦龙 JI Chao;YANG Chunxia;LI Menglong(School of Vehicle and Transportation Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学车辆与交通工程学院,山西太原030024

出　　处：《物流科技》2023年第13期55-60,共6页Logistics Sci-Tech

基　　金：太原科技大学研究生联合培养示范基地项目(JD2022020);太原科技大学研究生教育创新项目(SY2022067)。

摘　　要：针对左转交通流对于十字型交叉口车辆通行产生重大影响这一现象,文章提出十字型交叉口远引左转的设置方法及适用条件,从而提高交叉口通行效率及行车安全。通过分析十字型交叉口远引渠化的重要几何参数,构建了远引左转交通流的排队长度模型、掉头开口位置计算模型及开口大小与中央分隔带的设置,分析了十字型交叉口远引渠化后的通行能力计算方法。以太原市杏花岭区的一个十字型交叉口作为研究对象,分析结果表明一定条件下,十字型平面交叉口主干道左转远引设置可以减少交叉口延误和停车次数,提高交叉口通行能力,最后利用Vissim仿真证明以上方法是有效的。In view of the phenomenon that the left-turn traffic flow has a great influence on the traffic at the intersection,this paper puts forward the setting method and applicable conditions of the far-off left turn at the intersection,so as to improve the traffic efficiency and driving safety at the intersection.By analyzing the important geometric parameters of the long-distance channelization of the cross intersection,the queue length model of the long-distance left-turn traffic flow,the calculation model of the U-turn opening position,the opening size and the setting of the central separation zone are constructed,and the calculation method of the capacity after the long-distance channelization of the cross intersection is analyzed.Taking a cross intersection in Xinghualing District,Taiyuan City as the research object,the analysis results show that under certain conditions,the setting of the left turn of the main road of the cross intersection can reduce the delay and parking times of the intersection and improve the traffic capacity of the intersection.Finally,Vissim simulation proves that the above methods are effective.

关 键 词：远引左转 渠化 十字型交叉口 通行能力 

分 类 号：U491[交通运输工程—交通运输规划与管理]