Strength Model for Concrete in Near-Reinforcement Region
The relevant problem of concrete strength in the near-reinforcement zone is solved as a problem of volumetric stress-strain state with the “closure” of output integral parameters of this zone on the framework of the whole reinforced concrete element, synthesizing hypotheses and dependencies of vario...
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| Format: | Article |
| Language: | English |
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Peoples’ Friendship University of Russia (RUDN University)
2024-12-01
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| Series: | Structural Mechanics of Engineering Constructions and Buildings |
| Subjects: | |
| Online Access: | https://journals.rudn.ru/structural-mechanics/article/viewFile/42697/24456 |
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| author | Vladimir I. Kolchunov Natalia V. Fedorova Tatiana A. Iliushchenko |
| author_facet | Vladimir I. Kolchunov Natalia V. Fedorova Tatiana A. Iliushchenko |
| author_sort | Vladimir I. Kolchunov |
| collection | DOAJ |
| description | The relevant problem of concrete strength in the near-reinforcement zone is solved as a problem of volumetric stress-strain state with the “closure” of output integral parameters of this zone on the framework of the whole reinforced concrete element, synthesizing hypotheses and dependencies of various disciplines of solid mechanics, including fracture mechanics. The model of reinforced concrete element takes into account Vl.I. Kolchunov’s effect of reinforced concrete, which describes the mechanism of formation and development of transverse and longitudinal cracks. In this respect, generalized hypotheses of linear and shear strains for warping and gradients of relative mutual displacements of reinforcement and concrete are adopted. New functionals of reinforced concrete are constructed, which are consistent with the physical interpretations of the strength of cross-sections of bar elements in near-reinforcement zones. Constitutive equations for the concrete matrix, which models zones between transverse cracks, are written. The displacement components for the nearreinforcement zone in relation to the crack opening width at the “concrete-reinforcement” contact interface in transverse, longitudinal and radial cracks, respectively, are found. The use of the adopted assumptions and a multi-level calculation approach for the near-reinforcement region brings the model significantly closer to a real evaluation of the physical phenomena. |
| format | Article |
| id | doaj-art-440fe5be825d49e68c9583d3149b5b10 |
| institution | Kabale University |
| issn | 1815-5235 2587-8700 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Peoples’ Friendship University of Russia (RUDN University) |
| record_format | Article |
| series | Structural Mechanics of Engineering Constructions and Buildings |
| spelling | doaj-art-440fe5be825d49e68c9583d3149b5b102025-02-04T07:23:34ZengPeoples’ Friendship University of Russia (RUDN University)Structural Mechanics of Engineering Constructions and Buildings1815-52352587-87002024-12-0120539140310.22363/1815-5235-2024-20-5-391-40321050Strength Model for Concrete in Near-Reinforcement RegionVladimir I. Kolchunov0https://orcid.org/0000-0001-5075-1134Natalia V. Fedorova1https://orcid.org/0000-0002-5392-9150Tatiana A. Iliushchenko2https://orcid.org/0000-0001-6885-588XMoscow State University of Civil Engineering (National Research University)Moscow State University of Civil Engineering (National Research University)Kursk State UniversityThe relevant problem of concrete strength in the near-reinforcement zone is solved as a problem of volumetric stress-strain state with the “closure” of output integral parameters of this zone on the framework of the whole reinforced concrete element, synthesizing hypotheses and dependencies of various disciplines of solid mechanics, including fracture mechanics. The model of reinforced concrete element takes into account Vl.I. Kolchunov’s effect of reinforced concrete, which describes the mechanism of formation and development of transverse and longitudinal cracks. In this respect, generalized hypotheses of linear and shear strains for warping and gradients of relative mutual displacements of reinforcement and concrete are adopted. New functionals of reinforced concrete are constructed, which are consistent with the physical interpretations of the strength of cross-sections of bar elements in near-reinforcement zones. Constitutive equations for the concrete matrix, which models zones between transverse cracks, are written. The displacement components for the nearreinforcement zone in relation to the crack opening width at the “concrete-reinforcement” contact interface in transverse, longitudinal and radial cracks, respectively, are found. The use of the adopted assumptions and a multi-level calculation approach for the near-reinforcement region brings the model significantly closer to a real evaluation of the physical phenomena.https://journals.rudn.ru/structural-mechanics/article/viewFile/42697/24456volumetric stress statenear-reinforcement zonedisplacementcylindrical coordinateseffect of reinforced concretelinear and shear strainsgeneralized hypothesis |
| spellingShingle | Vladimir I. Kolchunov Natalia V. Fedorova Tatiana A. Iliushchenko Strength Model for Concrete in Near-Reinforcement Region Structural Mechanics of Engineering Constructions and Buildings volumetric stress state near-reinforcement zone displacement cylindrical coordinates effect of reinforced concrete linear and shear strains generalized hypothesis |
| title | Strength Model for Concrete in Near-Reinforcement Region |
| title_full | Strength Model for Concrete in Near-Reinforcement Region |
| title_fullStr | Strength Model for Concrete in Near-Reinforcement Region |
| title_full_unstemmed | Strength Model for Concrete in Near-Reinforcement Region |
| title_short | Strength Model for Concrete in Near-Reinforcement Region |
| title_sort | strength model for concrete in near reinforcement region |
| topic | volumetric stress state near-reinforcement zone displacement cylindrical coordinates effect of reinforced concrete linear and shear strains generalized hypothesis |
| url | https://journals.rudn.ru/structural-mechanics/article/viewFile/42697/24456 |
| work_keys_str_mv | AT vladimirikolchunov strengthmodelforconcreteinnearreinforcementregion AT nataliavfedorova strengthmodelforconcreteinnearreinforcementregion AT tatianaailiushchenko strengthmodelforconcreteinnearreinforcementregion |