车道变换模型确定互通式立交最小间距的探讨

Discussion on Minimum Distance between Interchanges by Lane Changing Model

该文分析了交通量、互通式立交相邻侧构造、交织段、司机驾驶、交通标志布置以及经济、地区7个因素对互通式立交间距的影响。根据立交间距的定义,采用匝道切线长和变速车道长度确定构造长度;采用车道变换模型、交通标志布置以及满足主线无交织运行的距离确定立交净距。最后,提出了主线设计速度80 km/h的互通式立交最小间距。

The article analyzes seven factors of traffic volume,construction at the adjacent side of interchange,weaving section,driving of driver,layout of traffic signs,economy and area on the distance between interchanges.According to the definition of distance between interchanges,the construction length is determined by the tangent length of ramp and the length of speed change lane.The clear spacing of interchange is determined by the lane changing model,layout of traffic signs and distance to satisfy the non-weaving operation of main line.At last,the article proposes the minimum distance between interchanges of the mainline by the designed speed 80 km/h.