互通式立交平面线形整参数求解计算方法

Computational Methods for Integer Parameters of Interchange Horizontal Alignment

互通式立交平面线形整参数求解计算方法王福建，邓学钧，李方（东南大学交通运输工程系，南京２１００１８）立交平面线形是由直线段、圆曲线段和回旋曲线这三种线形单元组合而成，由圆曲线半径Ｒ、回旋线参数Ａ以及各线形单元的长度Ｌ这三种线形参数来定义和描述．习惯上...

In view of the automatic computational problem of integer Parameters of horizontal alignment (circle's radius R,spiral parameter A), which is not solved perfectly in present interchange CAD system, this paper presents the computational metheds for integer parameters(R,A) of a spiral or the combination form 'transition-circle-transition' on the basis of given end points design method and other curved route design methods,then automatic design with integer parameters is realized,and the applicability of the interchange CAD system is also increased.