互通式立交最小安全净距和变速车道研究

Research on Minimum Safe Net Distance and Speed-change Lane of Interchange

互通立交是在公路沿线实现交通转换、为区域交通服务的重要构造物。为了保证互通立交的设计质量,文章基于车道变换理论,分析相邻互通立交之间的最小净距、互通立交与隧道出口的最小净距,探讨互通立交变速车道的形式选择及变速车道长度计算,研究成果可为互通立交设计提供理论参考。

Interchange is an important structure to realize traffic conversion and serve regional traffic along the highway.In order to ensure the design quality of interchanges,based on the lane change theory,this paper analyzes the minimum net distance between adjacent interchanges,the minimum net distance between interchanges and tunnel exits,and discusses the form selection of interchange speed-change lanes and the calculation of speed-change lane length.The research results can provide theoretical reference for the design of interchanges.