基于无阻滞理念的交叉口立交设计方案仿真与研究

Intersection is the bottleneck that restricts the capacity of road network traffic.Restricted by the limited space of urban road, the interchange is difficult to implement. No block design is a new idea to solve the congestion and delay of urban intersections.In this paper, the design scheme of two kinds of non blocking intersection of cost economy and construction scheme is put forward.The double cross small flyover and speed change lane shift skew combined design scheme is applied to large traffic intersection The design scheme of the combination of the far leading left turn and the overhead bridge is applied to the intersection with lower flow rate.This two kinds of design schemes will improve the traffic capacity of the intersection and reduce the delay rate of the trunk road network.