主线分离式平面交叉口优化研究

Optimization of Intersection with Mainline Separated

由于下穿隧道或跨线桥的结构限制等因素影响,主线分离式平面交叉口的交通特性与常规十字交叉口有所区别。通过对主线分离式平面交叉口的布局特点及交通特性进行分析,对该类交叉口信号配时、渠化设计、交通组织等方面进行组合优化研究。并选择实例交叉口,利用Vissim进行模拟仿真及评价,仿真结果表明,组合优化设计对实例交叉口的交通运行有改善作用。

The structure of tunnels or flyovers influence the traffic characteristics of intersections with mainline separated,which are different from normal intersections.By making analysis of the characteristic of intersections with mainline separated,this paper studies an optimization design in signal timing,channelization and traffic organization.Then,microscopic traffic simulation software vissim is used to simulate and evaluate the selected intersection.The simulation results show that optimization design can significantly improve the traffic condition of the intersection.