高速公路立体交叉匝道连续出口最小间距研究

Research on minimum distance of the highway ramp lane continuous export

针对目前我国相关规范关于匝道连续出口最小间距没有规定的现状,以高速路匝道处连续出口最小间距为研究对象,通过分析匝道连续出口处交通特性和车辆运行特性、驾驶人的认读标志的特点、匝道处车头时距的分布规律、等速偏移加正弦曲线换道模型的特征,建立互通式立体交叉匝道连续分流最小间距的计算模型,提出基于设计速度的匝道连续出口最小间距的建议值,为高速公路匝道连续出口的设计提供参考。

Aiming at the status quo for our country that has no relevant specifications on minimum distance of thehighway ramp lane continuous export.For minimum distance of the highway ramp lane continuous exportresearch,through the analysis of continuous exit ramp traffic and vehicle running characteristics,thecharacteristics of the driver’s recognize and read sign,the regularities of distribution for time headway,thecharacteristics of constant velocity offset-Sine curve lane change model,building a model for the minimumdistance of the highway ramp lane continuous export.Based on the proposed design speed recommend of theminimum distance of the highway ramp lane continuous export,obtain the ramp setting for the deceleration lane.Which provides an effective reference for the highway ramp lane continuous export.