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中文摘要：
为适应列车提速后高平顺性与高舒适性的需要，利用激光扫描技术获取的连续数据点云信息，通过曲率梳分析对轨道几何形位进行了描述，从曲率变化率入手，找出传统测量模式与提速行驶后现场新标准养护作业的盲区所在，并提出既有铁路曲线曲率变化率整正方法，从原有的面向过程的纯线形管理模式下的几何形位拟合思路转换为面向对象的车轨一体化线形养护新思路，使养护的线路几何形位与列车运动特性相吻合。
英文摘要：
In order to make railway track after being speeded up meet the need of high smoothness and high riding comfort, the article, on the basis of point cloud data obtained by laser scanning technology, conducted a description about the track geometry by means of curvature comb analysis. In light of the rate of curvature change, this article found out the blind area of traditional measurement mode to the new standard maintenance operation mode after the speeding-up, and put forward the realignment method for the rate of curvature change of the exiting railway. As a result, this method converts the original geometry fitting idea of the process-oriented pure geometric-shape management mode to a new geometric-shape maintenance idea of the object-oriented train-track integration mode, so that the track geometry after maintenance can coincide with the characteristics of train＇s movement.
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