Rail Grinding And Optimizion Of Rail Profile In Curve Section Of Railway

Since the Wuhan-Guangzhou high-speed rail operation，the shaking of train in curve sectionis serious，on the premise of keeping the linear geometry of railway and the fastening systemsabsolutely stable，the matching of wheel/rail is one of the major factors affecting the stability oftrain. In this article，Based on the data of appointed curve section of Wuhan-Guangzhou highspeed passenger railway，an analysis of horizontal acceleration、vertical acceleration、TrackQuality Index and rail wearing is carried out， achieving mean wear rail profile which have goodmatching relationship with LMA wheel.So， from the objective of altering the wheel/rail contactstatus，Contact Angle Function method and mathematical software MATLAB are adopted todesign rail profile having higher degree of conformity with LMA wheel.The calculated dynamicsperformances of train which have different rail profile were analyzed by using dynamicssimulation software SIMPACK while passing through Curve Section. Finding the train withoptimized rail profile has a better dynamics performance on Curve Section， the reliability andaccuracy of the optimization method is verified，in order to provide reference and help to the railgrinding and shaking regulation.