Comparative Study on the Wear Characteristic and Control Method of Rail Corrugation in Typical Fastener Sections

This paper conducts a comparative study on the severity, development trends of rail corrugation, and the suppression effects of rail vibration absorbers on small-radius curved track sections supported by two types of typical fasteners. Firstly, a finite element model (FEM) of the wheel-rail system for small-radius curved track sections is established based on field investigation data. Then, a comparative analysis is conducted on the frictional coupling vibration characteristics and wear characteristics of the rail surface for wheel-rail systems in the two typical fastener sections. Additionally, the suppression effect of installing rail vibration absorbers on rail corrugation is analyzed. The results indicate that the frictional coupling vibration in the wheel-rail system is the primary cause of rail corrugation on small-radius curved track sections, and the vibration response of the wheel-rail system in the Cologne egg fastener section is significantly greater than that in the DTVI2 fastener section. Furthermore, rail corrugation in the Cologne egg fastener section is more severe and develops faster compared to the DTVI2 fastener section. Finally, the installation of vibration absorbers suppresses rail corrugation in both fastener sections, with a more pronounced suppression effect observed in the Cologne egg fastener section.