圆曲线的测设方法较多,主要有直角坐标法(如切线支距法)、极坐标法(如偏角法)、角度交会法、解析坐标法等。诸法各有长短,一般前两法较常用。本文介绍三种新的测设法。新方法较现有的测设法简便。详述如下。一、交点偏角法如图1,J、Z、Y分别为曲线的交点、起点和终点,P_i为曲线上的任一 There are many methods of measuring the circular curve, such as rectangular coordinate method (such as tangent offset method), polar coordinate method (such as deflection method), angle intersection method and analytical coordinate method. Each law has its own length, the former two methods are more commonly used. This article describes three new test methods. The new method is more convenient than the existing method. Details are as follows. First, the intersection point Declination method shown in Figure 1, J, Z, Y were the intersection of the curve, starting point and ending point, P_i for any of the curve