高速出入口多路交叉口改造方案研究

Study on Reconstruction Scheme of Multi-road Intersections at Entrance and Exit of Expressway

环形交叉口在城市交通量不断增长的情况下冲突点不断增多,针对这种缺陷对多路环形交叉口进行改造,以提高其通行效率。以西安市曲江大道转盘交叉口改造为工程实例,对现状交叉口道路交通条件及交叉口流量进行调查分析。研究分析了交叉口道路结构及交通运行特点,提出交叉口道路交通改造方案,并依据现状交叉口交通流量,借助交通信号协调及配时设计软件SYNCHRO,对改造交叉口进行信号配时,进而借助交通仿真软件VISSIM进行改造后效果评价。对交叉口改造之后的运行情况进行了后评价分析,结论为:运行效果良好。

The number of conflict point at the rotary intersection is increasing with the increasing of urban traffic flow.Aiming at this defect,the multi-road intersection should be reconstructed in order to improve its traffic efficiency.Taking Xian Qujiang Avenue Turntable Reconstruction Project as a case,the traffic conditions and traffic flow at the current road intersections are invested and analyzed.The road structure and traffic operation characteristics of intersection are studied and analyzed.The intersection road traffic reconstruction scheme is put forward.Based on the current intersection traffic flow,with the help of the traffic signal coordination and timing design software SYNCHRO,the signal timing of the reconstructed intersection is carried out,and then the reconstruction effect is evaluated by the traffic simulation software VISSIM.The post evaluation and analysis is carried out for the operation situation after the reconstruction of intersection.The conclusion shows that the operation effect is good.