基于VISSIM-Synchro联合仿真的半苜蓿叶立交匝道分流及协调控制优化  

OPTIMIZATION OF RAMP DIVERSION AND COORDINATED CONTROL OF HALF CLOVERLEAF INTERCHANGE BASED ON VISSIM-SYNCHRO JOINT SIMULATION

作　　者：王晓军 王家琦 陈海波 杨春霞 Wang Xiaojun;Wang Jiaqi;Chen Haibo;Yang Chunxia(Department of Transportation and Logistics,Taiyuan University of Science and Technology,Taiyuan 030024,Shanxi,China;Dalian Haiyi Fengyue Technology Co.,Ltd.,Dalian 116024,Liaoning,China)

机构地区：[1]太原科技大学交通与物流学院,山西太原030024 [2]大连海亿丰悦科技有限公司,辽宁大连116024

出　　处：《计算机应用与软件》2023年第3期99-106,136,共9页Computer Applications and Software

基　　金：山西省重点研发计划项目(201803D31076);山西省研究生教育改革课题(2019JG163)。

摘　　要：与全苜蓿叶互通立交相比,半苜蓿叶互通立交单匝道出口及其衔接区易出现交通流混杂、通行能力饱和甚至严重拥堵等问题。为此,在交通冲突分析及现状评价基础上,设计一种主线出口匝道附加左转匝道的分流方案,VISSIM仿真模拟表明匝道分流后停车延误及排队等交通效益指标有了不同程度改进,交叉口服务水平由D级升为C级,验证了分流设计的合理性。为进一步提高通行能力,将新设计出口匝道与次干道协调控制,联合Synchro仿真软件依次对各交叉口节点的相位、周期及相位差进行改进。仿真结果表明,在对四组信号灯周期进行优化的基础上,优化有效绿灯时间和相位差,可减少延误,使交叉口服务水平从C级提升为B级,验证了将匝道出口与干线统一协调控制的必要性和有效性。Compared with the full cloverleaf interchange,the single off-ramp and its connecting area of half cloverleaf interchange are prone to the problems of mixed traffic flow,saturated capacity and even serious congestion.Therefore,on the basis of traffic conflict analysis and current situation evaluation,this paper designs a diversion scheme of the off-ramp with left-turn ramp.VISSIM simulation shows that the traffic benefit indexes such as parking delay and queuing have been improved to varying degrees after off-ramp diversion,and the intersection service level has been upgraded from D to C,which verifies the rationality of the diversion design.In order to further improve the traffic capacity,the newly designed off-ramp and secondary trunk road were coordinated controlled,and the phase,period and phase difference of each intersection node were improved successively by combining Synchro simulation software.The simulation results show that on the basis of optimizing the four groups of signal periods,optimizing the effective green time and phase difference can reduce the delay and improve the intersection service level from C to B,which verifies the necessity and effectiveness of unified coordinated control of off-ramp and trunk line.

关 键 词：半苜蓿叶互通立交 出口匝道 协调控制 VISSIM SYNCHRO 仿真 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]