公路曲线线元坐标计算通用模型

General Model for Coordinate Calculation of Highway Curve Elements

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, through analyzing the characteristics of three line elements such as straight line, circular curve, transition curve （including the oval curve） which are widely used in highway route design, a general model is intended to establish, and a general formula is derived accordingly. The calculation of the coordinates and tangent azimuth of any point on each line element will be no longer complicated. In order to provide a basic computational model for the follow up coordinates of one by one piles and the azimuth angle of tangent of the whole route.