一、前言 随着运量的不断增长,设计部门承担改造既有线和增建第二线的任务日愈加重。各铁路局的工务部门对管内所辖线路也要进行定期复测和大修。所有这些任务都要做大量校正曲线的拨距计算工作。 校正曲线的主要目的,是选择符合既有曲线现状的曲线半径及缓和曲线长度,使拨距量总和最小。以往用角图法计算拨距时存在两个 I. Preface As the volume of traffic continues to grow, the task of designing departments to undertake the reconstruction of both existing and second-tier networks is getting more and more serious. Public Works Bureau of the Railway Administration also conducts periodic retesting and overhaul of the lines under its jurisdiction. All these tasks have to do a lot of calibration curve of the distance calculation work. The main purpose of the calibration curve is to select the curve radius and the length of the curve to be in line with the existing curve so as to minimize the sum of the distance. In the past, there were two diagonal calculations when calculating the distance