Characteristic Investigation of Rail Corrugation on New Railway

Rail corrugation is a kind of irregularity of the rail itself accumulated after a long period of wheel-rail interaction. In this study, Sankuaicuo Station to Kaohsiung Station which is a subway of Taiwan Railways Administration is selected as the measurement site, and the track corrugated wear data is obtained through actual site measurement. After collecting the data and performing linear regression, the slope of the regression equation is used to determine the increasing speed of the high and low rail corrugation of the up main line and down main line. After comparison, it is found that the increasing speed of the up main line is higher than that of the down main line. And the increasing speed of both main lines are on the high rails higher than the low rails. The wavelengths of 125 mm and 100 mm are the characteristic wavelengths of low rails corrugation in this track. Finally, according to the latest data and the international standard ISO 3095, it is judged whether the four rails on the track need to be ground. The comparison result shows that except for the low rail of the down main line. © 2021, Chinese Institute of Civil and Hydraulic Engineering. All right reserved.