面向复杂环形交叉口的共享位移转换道设置方法  

Setting Method of Shared Displacement Transfer Lane for Complex Roundabout

作　　者：任其亮[1] 徐韬[1,2] 刘媛 程龙春[2] REN Qi-liang;XU Tao;LIU Yuan;CHENG Long-chun(Chongqing Jiaotong University,Chongqing 400074,China;Chongqing Municipal Design and Research Institute limited Company,Chongqing 400020,China)

机构地区：[1]重庆交通大学,重庆市400074 [2]重庆市市政设计研究院有限公司,重庆市400020

出　　处：《公路》2023年第5期205-211,共7页Highway

基　　金：国家社会科学基金,项目编号21BJY038。

摘　　要：为在不影响环形交叉口通行效率下满足进口道左转车辆通行需求,提出了面向复杂环形交叉口左转车辆的共享位移转换道设置方法。首先,根据起点、转换点及终点控制方式不同,将其分为内侧共享位移转换道(方案A)、外侧转换共享位移转换道(方案B)、内外侧转换共享位移转换道(方案C)等三类;然后,利用德尔菲-优序图法剔除非必要指标并建立含5个指标的评价体系并确定权重;其次,以出口道所有车辆通行时间为目标函数建立优化模型,提出了基于Transmodeler仿真建模的起点及转换点参数寻优算法,最终以重庆市两路口环道为例进行效果验证。结果表明:方案C综合得分79.6排名最高,左转车辆通行时间较实施前缩短80.4%,环道、进口道行程车速分别提升5.5%、27.2%,在出口道饱和度低于0.6情况下,共享位移转换道能有效提升环道及进口道通行效率,且对出口道不利影响在可接受范围内,同时Transmodeler仿真模型对环道行程车速MRE(Mean Relative Error,MRE)为4.0%,预测精度达到工程应用要求。In order to meet the traffic demand of left turning vehicles at the entrance without affecting the efficiency of roundabout,a shared displacement transfer lane setting method for left turning vehicles at complex roundabout is proposed.Firstly,according to the different control modes of starting point,conversion point and end point,they are divided into three categories:inner side shared displacement transfer lane(Plan A),outer side shared displacement transfer lane(Plan B)and inner and inner-outer side shared displacement transfer lane(Plan C);then,the Delphi-Precedence Chart Method is used to eliminate unnecessary indicators,establish an evaluation system with five indicators and determine the weight.Secondly,taking the traffic time of all vehicles on the exit road as the objective function,the optimization model is established,and the parameter optimization algorithm of starting point and conversion point based on Transmoder simulation modeling is proposed.Finally,the effect is verified by taking the Chongqing Lianglu Roundabout as an example.The results show that Plan C has the highest comprehensive score of 79.6,the traffic time of left turn vehicles is shortened by 80.4%compared with that before the implementation,and the travel speed of roundabout and entrance road is increased by 5.5%and 27.2%respectively.When the road saturation of exit is lower than 0.6,the shared displacement transfer lane can effectively improve the traffic efficiency of roundabout and entrance road,and the adverse impact of exit road is acceptable,At the same time,the MRE of the travel speed of the Transmoder simulation model is 4.0%,and the prediction accuracy meets the requirements of engineering application.

关 键 词：交通工程 共享位移转换道 德尔菲-优序图法 复杂环形交叉口 TRANSMODELER 

分 类 号：U412.351[交通运输工程—道路与铁道工程]