Abstract: Through field tests and dynamics software NUCARS,the characteristics of rail corrugation of high-speed railway were analyzed.The influence of rail corrugation on the dynamic response of track structure and the limit of rail corrugation treatment were studied.Results show that the wavelength of rail corrugation is generally 120~150mm in high speed section and 60~80mm in the low speed section near the station.The average depth of corrugation is below 0.10 mm in general.The wavelength of rail corrugation together with the specific frequency produced by the coupling effect of train speed will give rise to more obvious high frequency component of track structure,which causes the increase in wheel/rail vertical force as well as the acceleration of rail,track slab and base slab,and the increase is twice as that of where the rail corrugation does not occur.Both the lateral wheel-rail force and the vibration acceleration of beam deck vary little whether the rail corrugation occurs or not.Both the vertical wheel-rail force and load reduction rate increase with the increase of rail corrugation depth.The technical requirements for the regularity and safety of high-speed ballastless track are taken into comprehensive consideration.It is recommended that the depth limit of rail corrugation treatment for high speed railway should be 0.08 mm.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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Cited By Count: 3
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