About the authors
| First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address. | Mirsayapov Ilshat T., doctor of technical science, associate professor, Kazan State University of Architecture and Engineering, Kazan, Russian Federation. E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it , ORCID: 0000-0003-4902-6167 |
| Title of the article | Alternative theory of reinforced concrete endurance |
| Abstract. | Reinforced concrete is widely used in engineering structures, in transport construction, in industrial, energy and hydraulic engineering construction. All these buildings and structures are subjected to repeated loads. When designing reinforced concrete structures of buildings, there is still a problem of ensuring the endurance of structures. The article outlines the main provisions of the proposed alternative theory of endurance of reinforced concrete, methodology and methods for calculating reinforced concrete structures for endurance. The main concept in developing an alternative theory of reinforced concrete endurance is to describe the actual operation of reinforced concrete under repeated loads. Other concepts are to identify the acting internal forces under cyclic loads and substantiate the nature of their occurrence; to develop computational and mathematical models of fatigue resistance which make it possible to predict clearly the stress-strain state, and take into account the actual deformation of concrete and reinforcement in reinforced concrete structures. The models also identify causes, mechanisms, and forms of fatigue failure. The developed methodology and methods for calculating reinforced concrete structures for endurance are based on the developed alternative theory and explicitly take into account the main factors under repeated loads and exclude empirical coefficients. The objective of the study. Development of an alternative theory of the endurance of reinforced concrete. Tasks. Development of the scientific foundations of the theory of endurance of reinforced concrete, development of computational models of fatigue resistance for basic loading schemes of reinforced concrete structures, development of new methodology and methods for calculating reinforced concrete structures for endurance based on this theory. Results. Under cyclic loads, the increased development of concrete vibration creep deformations leads to an increase in residual deformations in the concrete of the compressed zone. Vibration creep deformations develop in cramped conditions, which leads to continuous changes in the stress-strain state, stress cycle asymmetry coefficients, and endurance limits for concrete and reinforcement under repeated loads. Conclusions. To assess the ability of reinforced concrete structures to resist repeated loads, it is most rational to check the endurance conditions recorded on the basis of calculated fatigue resistance models reflecting the actual operation of reinforced concrete under such loads. |
| Keywords. | buildings, structures, reinforced concrete, cyclic loadings, fatigue, endurance, vibration creep. |
| For citations: | Mirsayapov Ilshat T. Alternative theory of reinforced concrete endurance // News of KSUAE, 2026, No. 1 (75), P. 306-322, DOI: 10.48612/NewsKSUAE/75.25, EDN: PSRUXY |
