弧长法计算既有曲线拨道量

摘要

在铁路提速及既有铁路线改造设计工作中,采用全站仪任意点置镜,用极坐标法测量既有线曲线,然后利用弧长法计算曲线的拨量.此方法简单,精度高,且用全站仪测量操作方便,提高了工作效率.%In the railway and the existing railway line of designing work,using total station instrument set at any point to mirror ,and using polar coordinate method for measuring the existing railway curves, then using the arc length of method to calculate the rectification of curve vector. This method is simple, high precision,and easy to operate with total station instrument. It improves the work efficiency.