快速路入口匝道与衔接交叉口联动控制优化方法  

Linkage Control Optimization Method for On-ramp of Urban Expressway and Adjacent Intersection

作　　者：宋现敏[1] 张璐雨 白乔文 王鑫[2] SONG Xian-min;ZHANG Lu-yu;BAI Qiao-wen;WANG Xin(School of Transportation,Jilin University,Changchun 130022,China;School of Air Traffic Management,Civil Aviation University of China,Tianjin 300300,China)

机构地区：[1]吉林大学,交通学院,长春130022 [2]中国民航大学,空中交通管理学院,天津300300

出　　处：《交通运输系统工程与信息》2021年第6期63-73,共11页Journal of Transportation Systems Engineering and Information Technology

基　　金：吉林省自然科学基金(20190201107JC);国家自然科学基金重点项目(52131202)。

摘　　要：针对快速路入口匝道排队过长造成的衔接交叉口拥堵问题,提出一种快速路入口匝道和衔接交叉口的联动控制优化方法。分析快速路匝道排队溢出原因,提出基于交通状态估计的入口匝道与衔接交叉口的系统控制策略。以系统总通行能力最大和交叉口车均延误最小为目标,分别从交叉口配时、匝道调节及系统排队长度这3个方面构建系统约束方程,建立快速路入口匝道与衔接交叉口联动控制优化模型。以长春市典型快速路和交叉口为例,选择高峰、平峰、低峰这3种交通环境,运用联动控制优化模型进行仿真实验,并与经典优化方法进行对比分析,结果表明:不同交通状况下,联动控制优化方法均能有效改善快速路运行情况,缓解入口匝道排队溢出现象,同时提高衔接交叉口通行效率;特别是在饱和交通状态下,联动控制优化方法表现优异,系统整体车均延误和排队长度分别降低了5.67%和19.25%。The long queue at an expressway on-ramp often leads to traffic congestion at the adjacent intersection nearby.A linkage control optimization method for the expressway on-ramp and the adjacent intersection is proposed to address the issue.By analyzing the expressway ramp queuing spillover,a system control strategy for the on-ramp and the adjacent intersection is developed based on the traffic state estimation.With the objective of maximizing the system capacity and minimizing the average delay at the intersection,the system constraint equations are constructed,which include three aspects:the intersection timing,the ramp metering,and the system queue length.A linkage control optimization model between the expressway on-ramp and the adjacent intersection is established.Taking the typical expressway and intersection in Changchun as an example,the linkage control optimization model is simulated under three scenarios:the peak,the flat peak,and the low peak period.Compared with the classical optimization method,results show that the proposed method can effectively improve the expressway operation,alleviate the on-ramp queuing spillover,and increase the traffic efficiency of the adjacent intersection at the same time.Especially under saturated traffic flow,the linkage control optimization method performs the best with the average delay and queue length reduced by 5.67%and 19.25%,respectively.

关 键 词：城市交通 联动控制 信号配时优化 城市快速路 交通拥堵 入口匝道控制 

分 类 号：U491[交通运输工程—交通运输规划与管理]