与缓和曲线及其平行线有关的面积计算

Calculation of the area concerning easement curve or its parallel

列出了缓和曲线平行线间面积计算公式和缓和曲线弓形面积公式,运用简单几何原理推出了缓和曲线平行线弓形面积的通用计算公式,并附有算例相验证。讨论了面积公式的实际应用问题。

This paper presents the area calculation formulae for segment of easement and between the parallel curves of the easement. The general formulae for calculating the segment area of the parallel curve of easement are derived by the simple principle of geometry on the basis. The problems about the application of the area formulae in practice are also discussed.