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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Igor A. Antakov, senior lector of the Department of Reinforced Concrete and Stone Structures, Kazan State University of Architecture and Engineering, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Alfred M. Suleymanov, doctor of technical sciences, professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Title of the articleDeformability of flexural concrete members reinforced with fiber-reinforced polymer bars
Abstract.The behavior of flexural members with fiber-reinforced polymer reinforcement under load has a number of features fundamentally different from reinforced concrete, which is a consequence of differences in the physical and mechanical properties of composite and steel reinforcement. At the same time, the development of existing methods for calculating structures with fiber-reinforced polymer reinforcement was carried out by adapting existing methods for calculating reinforced concrete structures, by introducing and adjusting various empirical coefficients. In this regard, the purpose of this study is to improve the methodology for calculating the deflections of flexural concrete members reinforced with fiber-reinforced polymer reinforcement. The research objectives include the analysis of existing study in this area and existing methods for calculating flexural members and structures with fiber-reinforced polymer reinforcement, identification of their features and differences; experimental studies of the deformability of beams with fiber-reinforced polymer reinforcement, comparison of experimental data on deflections and theoretical data determined by the considered calculation methods; conducting theoretical studies aimed at developing recommendations for calculating the deflections of these structures. Results. The analysis of the conducted experimental studies of concrete beam specimens with the cross section of 120 ? 220 mm and the length of 1810 mm, reinforced in the tension side with two bars of glass fiber-reinforced polymer reinforcement was carried out. The tests were carried out with a short-term application of loads. A comparison was made of the theoretical dependencies, determined according to the guidelines of Russia – Set of Rules 295.1325800.2017 and the United States of America – American Concrete Institute 440.1R-06, and experimental dependencies between the values of the bending moment and deflections. It was found out that with increasing load, the reliability of the calculation of deflections by the methods under consideration decreases. It was proposed to calculate the deflections of flexural members with fiber-reinforced polymer reinforcement according to the method of Set of Rules 295.1325800.2017, taking into account the developed correction factor k. Conclusions. The use of the developed coefficient k made it possible to improve the accuracy of assessing the deformability of flexural members with fiber-reinforced polymer reinforcement.
Keywords.glass fiber-reinforced polymer reinforcement, fiber-reinforced polymer reinforcement, non-metallic reinforcement, flexural members, concrete structures, deflection
For citations:Antakov I.A., Suleymanov A.M. Deformability of flexural concrete members reinforced with fiber-reinforced polymer bars // News KSUAE, 2023, № 3(65), p.101-109, DOI: 10.52409/20731523_2023_3_101, EDN: HJVCIL


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