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本文重点阐述高等级公路非标准缓和曲线的施工放样测量。缓和曲线是设置在直线和圆曲线之间的一种线型,起缓和过渡作用,其目的在于保证车辆由直线进入圆曲线(或由圆曲线进入直线)时的横向稳定,缓和曲线的曲率半径随曲线长度的增加而均匀连续地变小,本文综合了各种情况下的曲线计算,给出了直接计算和间接计算两种计算方法,并用C编写了计算程序,给出了计算算例。
This article focuses on the construction of high-grade highway non-standard curve setting out the measurement. The easing curve is a linear type set between the straight line and the circular curve, which serves as a mitigation transition. Its purpose is to ensure the lateral stability of the vehicle when it enters a circular curve from straight line (or from a circular curve to a straight line), and to ease the radius of curvature of the curve As the length of the curve increases, the curve continuously and uniformly decreases. In this paper, the curve calculation in all cases is summarized. Two calculation methods, direct calculation and indirect calculation, are given. The calculation program is written in C and the calculation example is given.