该文通过对直线、圆曲线、缓和曲线(包括卵形曲线),在公路路线设计中普遍采用的三种线元特性进行分析,拟建立一个通用模型,并据此推导出一个通用公式。将使每一种线元上任意点的坐标及切线方位角计算不再繁杂,以期为后续全路线逐桩坐标及切线方位角计算提供基础的计算模型。 In this paper, by analyzing the characteristics of three kinds of line elements commonly used in the design of highway routes, such as straight line, circular curve, easing curve (including oval curve), a general model is to be established and a general formula is derived. The calculation of the coordinates and tangential azimuths of any point on each line element will no longer be complicated, so as to provide a basis for the subsequent calculation of pile-line coordinates and tangential azimuths of all the lines.