摘要
当干道上出现饱和交叉口时,需对饱和交叉口驶入方向进行截流调控以免路段排队溢流,对驶出方向进行绿波疏导以便车流迅速驶离。针对饱和交叉口不同方向的协调控制需求,本文给出了一种干道双向红绿波协调设计数解算法。首先,利用时距分析图推导了交叉口之间理想间距的计算通式,给出了交叉口协调相位时间中心偏移率的计算方法;然后,针对不同公共信号周期取值,分别计算各个交叉口在不同信号相位设置方式下的协调相位时间中心偏移率,将绝对值最小的中心偏移率所对应的相位设置方式作为各交叉口的优选相位;接着,比较不同公共信号周期取值下优选相位所对应的最大中心偏移率之差,对应最大中心偏移率之差最小的公共信号周期取值即为最佳公共信号周期;最后,结合红绿波设计特点给出了微调相位差的优化方法,使得交叉口绿波带方向的中心偏移率最小,从而确保干道双向获得较大的红绿波带宽。案例分析表明,本文算法设计得到的双向红绿波协调控制方案相比于双向绿波协调控制方案,在保证驶入饱和交叉口方向存在最大红波带的同时,可以使得驶离饱和交叉口方向的绿波带宽明显增加。VISSIM仿真实验发现,本文方法设计得到的方案既能够缩短饱和交叉口的最大排队长度23.1%、平均排队长度33.8%,推迟饱和交叉口车辆排队溢出至上游交叉口的时间,也能够使饱和交叉口驶出车辆在下游路段的行程时间与停车次数分别减少17.5%与76.3%,实现了对于饱和交叉口的溢流防控与绿波疏导。
When there is a saturated intersection on the arterial road,it is necessary to intercept and regulate the traffic flow in the entry direction of the saturated intersection,so as to avoid the overflow of the section queue,and to conduct green wave dredging in the exit direction of the saturated intersection to facilitate the rapid departure of traffic flow.According to the coordination control requirements in different directions of saturated intersection,this paper proposed an algebraic method of coordination design for bi-directional red and green waves on arterial roads.Firstly,the general formula for calculating the ideal intersection distance was derived by using the time-space diagram,and the calculation method of bias-split for the coordinated phase was given.Secondly,for different common signal cycles,the bias-split for the coordinated phase under different signal phase modes of each intersection was calculated respectively.The signal phase mode corresponding to the bias-split with the smallest absolute value was taken as the preferred phase of each intersection.Then,the max difference of bias-split corresponding to the preferred phase under different common signal cycles was compared,and the common signal cycle with the minimum of the max difference of bias-split was selected as the best common signal cycle.Finally,based on the characteristics of red and green waves,the optimization method of fine-tuning signal offsets was given to minimize the bias-split of the green wave direction,so as to ensure that the arterial road can obtain bi-directional red and green wave bandwidth as wider as possible.The case analysis shows that,compared with the scheme of bi-directional green wave coordinated control,the bi-directional red and green waves coordinated control scheme designed by this method can significantly increase the green wave bandwidth in the direction of leaving the saturated intersection while ensuring that there is a maximum red wave bandwidth in the direction of entering the saturated intersection.The VISSIM simulation experiment shows that the scheme designed by this method can not only shorten the maximum queue length by 23.1%and the average queue length by 33.8%,and delay the time of vehicles queuing to overflow to the upstream intersection,but also reduce the travel time and the number of stops of the vehicles leaving at the saturated intersection in the downstream section by 17.5%and 76.3%,respectively.It can realize the overflow prevention and green wave dredging of the saturated intersection.
作者
卢凯
赵世杰
吴焕
尹帅帅
LU Kai;ZHAO Shijie;WU Huan;YIN Shuaishuai(School of Civil Engineering and Transportation/State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,Guangdong,China;Guangzhou Lab of Artificial Intelligence and Digital Economy,Guangzhou 510330,Guangdong,China;Shenzhen Urban Transport Planning Center Co.Ltd.,Guangdong Transport Information Engineering Technology Research Center,Shenzhen 518021,Guangdong,China)
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2022年第9期1-11,共11页
Journal of South China University of Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(52172326,61773168)
广州市重点研发计划资助项目(202103050002,202206010056)。
关键词
交通工程
协调控制
双向红绿波
数解算法
饱和交叉口
理想位置
traffic engineering
coordination control
bi-directional red and green waves
algebraic method
saturated intersection
ideal position
作者简介
卢凯(1979-),男,教授,博士生导师,主要从事智能交通控制研究。E-mail:kailu@scut.edu.cn;通信作者:吴焕(1991-),男,工程师,主要从事交通建模与规划研究。E-mail:wuhuan@sutpc.com。
