Auto CAD图解法在缓和曲线计算中的应用

The Application of Auto CAD Graphic Methodin the Calculation of Relaxation Curve

本文以缓和曲线直角坐标计算公式及切线角计算公式为基础,先用Excel分段计算出缓和曲线坐标,用较短长度直线连接成一条多段线来拟合缓和曲线;然后利用Auto CAD中自定义坐标系、旋转和平移等命令,实现在直线段和圆曲线之间插入缓和曲线的图解坐标计算方法。

Based on the rectangular coordinate calculation formula and the tangent angle calculation for-mula of the relaxation curve,the coordinates of the relaxation curve are calculated by excel segment,and the short length straight line is connected into a multi-segment line to fit the relaxation curve.Then,the graphic coordinate calculation method of inserting a relaxation curve between a straight-line segment and a circular curve is realized by using the custom coordinate system,rotation,and shift commands in Auto CAD.