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关于椭圆形的锥形溜坡放样法,公路杂志已经介绍了几种。但都是在放样时,须将地面取平后,才能放样,使椭圆曲线划在平面上。但在山区公路,往往因为锥坡的一角,遇到突出的岩石;这种突出的岩石,又往往凹凸不平,使我们在放样时,无法将椭圆划出来。这样往往容易做出不甚圆滑的锥形溜坡。现在介绍下面另一种放样方法,以供参考:1.先在平地上用普通方法绘一椭圆形的四分之一。
On the elliptical taper slope setting method, several road magazines have been introduced. However, when setting out, it is necessary to flatten the ground before setting out so that the elliptic curve can be drawn on a plane. However, in mountainous roads, the prominent rocks are often encountered due to the corner of the cone slope. The outstanding rocks are often so uneven that we can not draw the oval out of the way. It is often easier to make less smooth sleek slopes. Now introduce another loft method below, for reference: 1 first on the ground using ordinary methods to draw an oval quarter.