互通式立交匝道进出口纵坡衔接新方法探究

New Method of Longitudinal Slope Joint at Entrance of Interchange Ramp

运用数学几何方法对立交匝道进出口纵坡衔接问题进行分析,并通过对平面线形为直线或不设超高曲线段和设置超高曲线段两种情况进行研究,可得出进出口处匝道纵坡度的合理计算方法。

Mathematic geometric method is applied to analyze longitudinal slope joint at entrance of interchange ramp, as well as the two cases like setting straight line segment or super high curve segment and non-setting super high curve segment. Thus the rational calculation method is deduced.