Steel fiber-reinforced concrete half a step of the low vibration track

The object of research is a half a step of the low vibration track. Current regulations strictly limit the formation and opening of cracks in these structures. The work of many researchers has shown that LVT half a steps need to increase crack resistance. To solve this problem, it is proposed to introduce steel fiber into concrete, which will increase the resistance of half a steps to the formation and opening of cracks. The purpose of this work is to increase the crack resistance of these half a steps by introducing steel fiber into the concrete. Method. Experimental studies were conducted to obtain experimental data, and the Ansys Workbench software package was used to evaluate the stress-strain state. The results obtained were compared with previous research papers. Results. Numerical results are presented for a steel-fiber-concrete half a steps, stress and strain diagrams, a crack formation map, and the nature of fracture are shown. A comparison of the research results of LVT half a steps made of heavy concrete and steel-fiber reinforced with steel rod reinforcement is presented. Conclusions. The bearing capacity of the half a step increased by 198% after the addition of steel fiber, and crack resistance by 300% (normal cracks) and 679% (inclined cracks).

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