Affiliation:
1. Civil Engineering, Railways, Roads and Bridges Department, Technical University of Cluj-Napoca, 400114 Cluj-Napoca, Romania
Abstract
This paper’s aim is to assess the rail wear evolution of railway tracks under mixed traffic conditions for sharp curves. Field investigations were conducted over a period of five years, at 800 points on a rail track, for two curves that underwent maintenance interventions: sleeper and rail replacements during measurements. Lateral and vertical wear measurements were monitored with mechanical instruments, and Prokon and Sap simulations were performed in order to determine the bearing capacity of the rail at different stages of wear. The results obtained after five years of investigation show wear speed propagation on the outer rail of small-radius curves as well as the bending moments and admissible stress variation. At more than 18% of the studied points, lateral wear exceeded the maximum admissible limit, showing a faster propagation speed on the outer rail compared to the vertical wear rate.
Funder
Technical University of Cluj-Napoca
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference46 articles.
1. Hamadache, M., Dutta, S., Olaby, O., Ambur, R., Stewart, E., and Dixon, R. (2019). On the fault detection and diagnosis of railway switch and crossing systems: An overview. Appl. Sci., 9.
2. Lichtberger, B. (2005). Track Compendium: Formation, Permanent Way, Maintenance, Economics, Eurail Press. [1st ed.].
3. Experimental investigation on the effect of contact forces on uneven longitudinal wear of rail material;Zhang;Wear,2023
4. Rail rolling contact fatigue response diagram construction and shakedown map optimization;Wang;Wear,2023
5. On the action of a locomotive driving wheel;Carter;Proc. R. Soc. Lond.,1926