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随着现代高速公路的发展,回旋曲线已不完全是原来意义的缓和曲线了。它与直线和园曲线并列成为公路的三大线形。矿山公路无疑是低速公路。我认为随着运算工具和相应绘图模具的研制,总图运输设计者也会逐步乐于采用回旋曲线的。笔者曾撰文①论及矿山公路回头曲线的几何设计。其中谈到用纯回旋曲线作回头曲线的设计方法。见图一,它是以切线
With the development of modern expressway, the curve of convolution is not exactly the relaxation curve of the original meaning. It is tied with the straight line and the park curve into three major lines of the road. Mine Road is undoubtedly the highway. I think with the development of computing tools and corresponding drawing molds, the master planner transportation designer will also gradually be willing to use the clothoid curve. I have written ① on the geometric design of the highway back to the curve of the mine. Which talked about using purely curly curve as the back curve design. See Figure 1, it is tangential