交叉口逆向可变车道与信号配时协同优化方法  

A Collaborative Optimization Method for Reversible Lanes and Signal Timing at Intersection

作　　者：孙锋[1] 焦方通 马晓龙 张倩 赵菲[1] SUN Feng;JIAO Fang-tong;MA Xiao-long;ZHANG Qian;ZHAO Fei(School of Transportation and Vehicle Engineering,Shandong University of Technology,Zibo Shandong 255049,China;Qingdao Hisense TransTech Co.,Ltd.,Qingdao Shandong 266071,China;Shandong Dongtai Engineering Consulting Co.,Ltd.,Zibo Shandong 255000,China)

机构地区：[1]山东理工大学交通与车辆工程学院,山东淄博255049 [2]青岛海信网络科技有限公司,山东青岛266071 [3]山东东泰工程咨询有限公司,山东淄博255000

出　　处：《公路交通科技》2019年第11期83-89,96,共8页Journal of Highway and Transportation Research and Development

基　　金：国家自然科学基金项目(51508315,51608313);山东省重点研发计划项目(2016GGB01539)

摘　　要：为了缓解交叉口在高峰时段由于左转流量过饱和诱发的交通拥堵问题,本研究以设置逆向可变车道的交叉口为研究对象,对其车道动态开关与信号配时方案的协同优化方法进行了研究。首先,分析了逆向可变车道设置前后交叉口通行能力及运行状态变化,提出了该类交叉口进口道左转车道组通行能力和饱和流量的计算方法,并确定了在保障安全前提下交叉口逆向可变车道与信号控制协同优化的目标;然后,以常规四路交叉口为例,结合交叉口的供需关系提出了过饱和状态下设置逆向可变车道交叉口的信号相位相序、周期、绿灯时长、绿灯提前启亮和清空时间的计算方法。最后,以信号周期、相位最小绿灯、提前启亮时间以及有效绿灯为约束条件,基于效率和安全为目标构建了逆向可变车道控制与信号参数的协同优化模型。在对设有逆向可变车道交叉口实际调研的基础上,通过实际案例分析确定了优化模型的终止条件并对信号配时优化模型的有效性进行了验证。分析结果显示,在逆向可变车道仅开启6~9个周期的情况下,交叉口的车均延误和左转最大排队长度较优化前分别下降12.10%和45.74%,而经历二次停车的数量下降最为明显,达到97.98%以上。In order to alleviate the traffic congestion caused by over-saturation of left-turn movement at intersection during the peak time,taking the intersection with reversible lanes as the research object,the collaborative optimization method for the lane dynamic opening and closing and signal timing is studied.First,the traffic capacity and the operation state of the intersection before and after implementation of reversible lanes are analyzed,the calculation methods of left-turn capacity and saturated traffic volume of the approach of the reversible lane are studied,and the goal of collaborative optimization of the reversible lanes and signal control at intersection under the premise of ensuring safety is put forward.Then,taking the conventional four-way intersection for example,combining with the supply-demand relationship of the intersection,the calculation methods of signal phase sequence,cycle length,green light time,advanced green light start-up time and clearance time of the intersection with reversible lanes under over-saturation state are proposed.Finally,regarding the cycle length,the minimum green time of each phase,the advanced start-up time and effective green time as the constraints,a cooperative optimization model for the control and signal parameters the reversible lanes is built based on the efficiency and safety.On the basis of actual investigation of the intersections with reversible lanes,an example is given to determine the termination condition of optimization model,and the effectiveness of the signal timing optimization model is verified.The analysis result shows that with the opening of reversible lanes only in 6-9 cycles,the average delay and the maximum left-turn queue length at intersection are decreased by 12.10% and 45.74% respectively,and the decline number of secondary stop vehicles is most obviously,reaching more than 97.98%.

关 键 词：交通工程 逆向可变车道 协同优化 交通管控 信号配时 通行能力 

分 类 号：U491[交通运输工程—交通运输规划与管理]