Stress-strain state of a steel-fiber-concrete half-sleep of a low-vibration track
https://doi.org/10.33979/2073-7416-2026-123-1-16-32
Abstract
The article addresses a pressing issue of limiting crack formation in semi-sleepers designed for tracks with reduced vibration. As an effective design solution, the use of steel-fiberreinforced concrete (SFRC), which possesses enhanced strength and deformation characteristics, is proposed. The study, conducted in two stages, involved experimental methods on full-scale specimens and numerical modeling of the stress-strain state. The results established that the steel-fiber-reinforced concrete semi-sleeper surpasses the traditional reinforced concrete one in load-bearing capacity by 198%. Furthermore, a multiple increase in crack resistance was observed: resistance to the formation of normal cracks increased by 300%, and to inclined cracks—by 679%. The obtained results confirm that the application of steel-fiber-reinforced concrete not only allows for meeting stringent regulatory requirements for crack resistance but also significantly enhances the overall reliability and durability of the structure under service conditions.
About the Authors
I. T. Mirsayapov
Kazan State University of Architecture and Engineering
Russian Federation
Russian Federation
Ilshat T. Mirsayapov, doctor of technical sciences, associate professor, head of the department of reinforced concrete and masonry structures
Kazan
M. N. Pavlov
Kazan State University of Architecture and Engineering
Russian Federation
Russian Federation
Maksim N. Pavlov, postgraduate student
Kazan
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Review
For citations:
Mirsayapov I.T., Pavlov M.N. Stress-strain state of a steel-fiber-concrete half-sleep of a low-vibration track. Building and Reconstruction. 2026;(1):16-32. (In Russ.) https://doi.org/10.33979/2073-7416-2026-123-1-16-32
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