双开口式出口道左转交叉口信号配时优化模型  

Signal timing optimization model for left-turn intersection using double-exit lanes

作　　者：宋浪 王健[1] 杨滨毓 朱湧[2] SONG Lang;WANG Jian;YANG Bin-yu;ZHU Yong(School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;China Merchants Chongqing Communications Technology Research&Design Institute Co.,Ltd.,Chongqing 400067,China)

机构地区：[1]哈尔滨工业大学交通科学与工程学院,哈尔滨150090 [2]招商局重庆交通科研设计院有限公司,重庆400067

出　　处：《吉林大学学报（工学版）》2023年第10期2826-2838,共13页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金重大研究计划项目(91846301)。

摘　　要：为解决在综合功能区设置过长时单开口式出口道左转交叉口应用效果不佳的问题,提出了双开口式出口道左转交叉口控制策略。通过解析单、双开口式运行机理,构建逆流左转车道理论通行能力计算模型,以机动车通过量最大为优化目标,建立信号配时优化模型。结果表明,若常规左转车道数等于预信号开口车道数,两种开口方式理论通行能力是相同的,而当常规左转车道数大于预信号开口车道数时,双开口式的理论通行能力大于单开口式;敏感性分析发现出口道左转交叉口理论通行能力随综合功能区总长度、左转比例的变化总体上呈先增后减的趋势,双开口式综合功能区总长度宜在80~100 m。A control strategy for left-turn intersection using double-exit line is proposed to solve the ineffective problem of left-turn intersections using single-exit lane when the length of the comprehensive function area is too large.This paper first establishes a capacity calculation model of contraflow left-turn lanes by analyzing the operation mechanism of contraflow left-turn lanes using single and double exits.Then,a signal timing optimization model is constructed which the maximum number of motor vehicles as the optimization objective.The result indicates if the number of conventional left-turn lanes is equal to that of pre-signal exit lanes,the traffic capacity of the two modes is the same.If the number of conventional left-turn lanes is greater than that of pre-signal exit lanes,the capacity of double-exit type is significantly greater than that of single-exit type.Sensitivity analysis shows that the capacity of left-turn intersections increases first and then decreases with the change in the total length of the comprehensive functional area and the proportion of left-turn.The total length of the comprehensive functional area with double-exit lane should be between 80 and 100 m.

关 键 词：交通运输系统工程 信号配时 线性规划 出口道左转交叉口 逆流左转车道 

分 类 号：U491[交通运输工程—交通运输规划与管理]