PSI - Issue 81

Roman Rybak et al. / Procedia Structural Integrity 81 (2026) 255–259

258

5.73

6.72

1.79

1.02

6.11

5.13

Fig. 4. (a) Deformation distribution diagram at the onset of cracking; (b) Deformation distribution diagram at the moment of failure.

The deformation distribution diagrams show that deformations along the pipe’s circumference occur unevenly. Notably, the maximum deformation values, both at the onset of cracking and at the moment of failure, predominantly manifest in the vertical direction. 4. Conclusions As a result of the conducted static experimental tests on strengthened reinforced concrete culvert pipes, the following conclusions were drawn: 1. The experimental tests demonstrated that strengthening a reinforced concrete culvert pipe using the sleeving method with an added spatial reinforcing cage significantly affects the deformability characteristics of the structure. In particular, the use of the reinforcing cage ensures a more uniform distribution of stresses between the inner liner and the outer reinforced concrete shell. 2. The beginning of the surface cracking was established at a vertical strain of 5.73 mm at the apex. The complete failure attained 6.72 mm. The largest deformations spread in the vertical direction, which corresponds to the critical zones of the pipe under load. 3. According to test results, the reinforcement cage slows down the spread of cracks and postpones the moment of collapse. 4. The obtained results confirm the feasibility of using sleeving with a reinforcing cage to restore the load-bearing capacity and durability of reinforced concrete culvert pipes, which is of practical significance for the rehabilitation and repair of road infrastructure. References Barr, P.J., Stanton, J.F., Eberhard, M.O., 2005. Effects of temperature variations on precast, prestressed concrete bridge girders. J. Bridg. Eng 10(2), 186 – 194. https://doi.org/10.1061/(asce)1084-0702(2005)10:2(186) Boikiv, M., Postranskyy, T., Afonin, M., 2023. Establishing patterns of change in the efficiency of regulated intersection operation considering the permitted movement directions. East. Eur. J. Enterp. Technol 4(3(118), 17 – 26. https://doi.org/10.15587/1729-4061.2022.262250 Dovbenko, V., Kukhniuk, O., Homon, S., Ivaniuk, A., Aleksiievets, V., Savytska, O., Kulakovskyi, L., 2024. Study of the strength properties of concrete impregnated with a polymer composition. Procedia Structural Integrity 59, 702-709. Drobyshynets, S., Babych, Y., Sunak, P., Zadorozhnikova, I., Parfentyeva, I., Pakharenko, V., Homon, S., 2024. Experimental and theoretical studies of fatigue of steel fibre reinforced concrete under low-cycle compression. Procedia Structural Integrity 59, 601-608. Dvorkin, L., Bordiuzhenko, O., Zhitkovsky, V., Gomon, S., Homon, S., 2021. Mechanical properties and design of concrete with hybrid steel basalt fiber. E3S Web of Conferences 264, article number 02030. Korniychuck, O., Masiuk, G., Homon, S., Aleksiievets, I., Chapiuk, O., Kaynts, D., Rizak, V., 2024. Deformability of reinforced concrete beams under the action of repeated alternating loads. Procedia Structural Integrity 59, 575-582. Kovalchuk, V., Parneta, B., Rybak, R., 2024. Methodology of experimental studies of the deformed state of a concrete pipe restored polymer repair mix. Procedia Struct. Integrity 59, 360 – 366. https://doi.org/10.1016/j.prostr.2024.04.051 Kovalchuk, V., Rybak, R., Hnativ, Y., Tkachenko, V., Onyshchenko, A., Kravets, I., Hermaniuk, Y., Babyak, M., Hembara, N., & Velhan, I., 2022. Assessment of the stressed-strained state of a reinforced transport pipe under the combined effect of ambient temperature and static loads. Eastern-European Journal of Enterprise Technologies 6(7 (120), 6 – 12. Machelski, C., 2016. Steel plate curvatures of soil-steel structure during construction and exploatition. Roads and Bridges 15, 3, 2016, 207 – 220. DOI: 10.7409/rabdim.016.013. Parneta, B., Kovalchuk, V., Rybak, R., 2024. Methodology for Evaluating the Stress-Strain State of Strengthened Concrete Pipe Using the Finite Element Method with FEMAP with NX Nastran. In: Blikharskyy, Z., Zhelykh, V. (eds) Proceedings of EcoComfort 2024. EcoComfort 2024. Lecture Notes in Civil Engineering, vol 604. Springer, Cham. DOI: 10.1007/978-3-031-67576-8_37 Postranskyy, T., Boikiv, M., Rogalskyi, R., 2020. Selection of a traffic management scheme at an intersection taking into consideration the traffic flow composition. East. Eur. J. Enterp. Technol 1(3 (103), 39 – 46. https://doi.org/10.15587/1729-4061.2020.195327