Longitudinal deformations of continuously welded rail track under recuperative braking of trains in inclement climatic conditions
https://doi.org/10.52170/1815-9265_2024_69_41
Abstract
The article analyzes some directions for the development of railway transport in Russia until 2030. Some of the main problems in the maintenance of continuously welded rail track are considered. Issues of maintenance methods for continuously welded rail track taking into account the impact of trains remain relevant today, so it is necessary to pay attention to research in this area and adjust existing methods, which currently only partially take into account the peculiarities of the temperature operation of continuously welded rail track.
The article provides an overview of existing theories of track hijacking, but attention is paid to the mechanism of the continuously welded rail track specific elastic longitudinal deformations, which occur when a locomotive passes in braking mode.
Calculations of longitudinal forces in continuously welded rail track and their elastic movements within the wheelbase of the ES10 series electric locomotives running in regenerative braking mode under various operating conditions were performed. Such longitudinal forces, which additionally arise during braking, affect the fastening intervals of the continuously welded rail track strands and the stability of the rail and sleeper grid as a whole.
Proposals are given for adjusting the calculated temperature range for fixing rail strands to a constant operating mode by comparing the compressive longitudinal forces from an increase in the rails temperature and the longitudinal forces transmitted to the rail strands during regenerative braking of the electric locomotive. It has been established that, under the conditions considered in the article, the need to strengthen the structure of the superstructure of the track arises earlier than provided for by the Instructions for the design, laying, maintenance and repair of continuously welded rail track.
About the Author
I. K. Ardyshev
Siberian Transport University
Russian Federation
Russian Federation
Ilya K. Ardyshev – postgraduate of the Track and Track Facilities Department
Novosibirsk
References
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Review
For citations:
Ardyshev I.K. Longitudinal deformations of continuously welded rail track under recuperative braking of trains in inclement climatic conditions. Bulletin of Siberian State University of Transport. 2024;(2):41-48. (In Russ.) https://doi.org/10.52170/1815-9265_2024_69_41
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