Calculation of rail plate deflections on a wooden sleeper, taking into account the wear of wood
https://doi.org/10.52170/1815-9265_2022_60_58
Abstract
On the railway tracks of industrial transport, especially on the technological tracks of metallurgical plants, where the use of specialized rolling stock (for example: iron trucks, slag trucks, etc.) is becoming increasingly widespread, that has already led to an axle load 2–2.5 times higher than the standard loads on mainline rail transport. The increased axial load increases the intensity of the formation of depressions in the upper layer under the rail plate and leads to the development of cracks from the impact of fasteners and rail plates on wooden sleepers, which leads to bending of the rail plates and premature decommissioning of both rail plates and wooden sleepers due to mechanical wear.
The experience of operating railway tracks and switches on industrial railway tracks, along which rolling stock with axial loads of 30–50 tf/axle turns, has shown that some of the rail plates fail long before the expiration of their standard service life, and wooden sleepers and bars have extremely short service lives and are withdrawn, as a rule, not by rotting, but by mechanical wear under the plates.
Thus, an acute problem in the field of the current maintenance of the railway track upper structure both on the tracks of industrial transport and on the tracks and mainline transport is the increase in the service life of rail plates, as well as wooden sleepers and bars in various operating conditions.
In this article, the deflections of the rail plate on a wooden sleeper are calculated taking into account the wear of wood and taking into account the variable cross-section of the rail plate. The values of deflections of the rail plate on a wooden sleeper are obtained, taking into account the wear of wood, depending on the applied load. The use of this technique for assessing the strength of rail plates allows you to more accurately determine the margin of safety of a rail plate with different sizes at the design stage.
About the Author
M. S. Chusovitin
OOO NOVATEK-TRANSSERVICE
Russian Federation
Russian Federation
Maksim S. Chusovitin – Deputy Chief Engineer for Production
Purovsk
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Review
For citations:
Chusovitin M.S. Calculation of rail plate deflections on a wooden sleeper, taking into account the wear of wood. Bulletin of Siberian State University of Transport. 2022;(1):58-67. (In Russ.) https://doi.org/10.52170/1815-9265_2022_60_58
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