Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements
Introduction. Compressed steel-reinforced concrete structures, due to the requirements of reduced cross-sectional dimensions for vertical load-bearing structures with high strength and rigidity of structures, as well as their fire resistance, are widely used throughout the world in the construction...
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Moscow State University of Civil Engineering (MGSU)
2024-09-01
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| Online Access: | https://www.vestnikmgsu.ru/jour/article/view/371 |
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| author | D. N. Lazouski A. I. Hil D. O. Hlukhau |
| author_facet | D. N. Lazouski A. I. Hil D. O. Hlukhau |
| author_sort | D. N. Lazouski |
| collection | DOAJ |
| description | Introduction. Compressed steel-reinforced concrete structures, due to the requirements of reduced cross-sectional dimensions for vertical load-bearing structures with high strength and rigidity of structures, as well as their fire resistance, are widely used throughout the world in the construction of high-rise buildings, entertainment structures, etc. Methods for their calculation are constantly being improved. The deformation approach to calculation makes it possible to obtain the parameters of their stress-strain state (SSS) at any stage of deformation under load, to take into account physical nonlinearity of the materials and the loading stages.Materials and methods. The selection of compressed steel-reinforced concrete elements for the theoretical study was made according to the data published in open sources. A cross-sectional model was compiled, taking into account the joint work of concrete, rigid and flexible reinforcement, and their deformation diagrams, taking into account physical nonlinearity. A criterion for the destruction of the cross section of a steel-reinforced concrete element without limiting the limiting deformations of materials under compression is proposed.Results. The prerequisites for using the deformation approach to the calculation of steel-reinforced concrete elements are formulated. Two stages of their operation are considered: under the action of forced shrinkage deformations during concrete hardening and subsequent loading. Using examples of the accepted specimen of compressed steel-reinforced concrete elements, the advantages of the deformation approach in their calculation are shown.Conclusions. The deformation approach to calculation makes it possible to obtain the SSS parameters of compressed steel-reinforced concrete elements of arbitrary cross-section shape with different distribution of reinforcement over the cross-section, to take into account the nonlinearity of deformation of materials, concrete shrinkage. The proposed criterion for the destruction of compressed steel-reinforced concrete elements allows to take into account the redistribution of forces between concrete, rigid and flexible reinforcement to full extent. |
| format | Article |
| id | doaj-art-6b2af30e2cc7431384a10192dee3684d |
| institution | Kabale University |
| issn | 1997-0935 2304-6600 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Moscow State University of Civil Engineering (MGSU) |
| record_format | Article |
| series | Vestnik MGSU |
| spelling | doaj-art-6b2af30e2cc7431384a10192dee3684d2025-01-09T08:22:50ZengMoscow State University of Civil Engineering (MGSU)Vestnik MGSU1997-09352304-66002024-09-011991469148310.22227/1997-0935.2024.9.1469-1483168Deformation approach to the calculation of compressive strength of steel-reinforced concrete elementsD. N. Lazouski0A. I. Hil1D. O. Hlukhau2Euphrosyne Polotskaya State University of PolotskEuphrosyne Polotskaya State University of PolotskSoftclubIntroduction. Compressed steel-reinforced concrete structures, due to the requirements of reduced cross-sectional dimensions for vertical load-bearing structures with high strength and rigidity of structures, as well as their fire resistance, are widely used throughout the world in the construction of high-rise buildings, entertainment structures, etc. Methods for their calculation are constantly being improved. The deformation approach to calculation makes it possible to obtain the parameters of their stress-strain state (SSS) at any stage of deformation under load, to take into account physical nonlinearity of the materials and the loading stages.Materials and methods. The selection of compressed steel-reinforced concrete elements for the theoretical study was made according to the data published in open sources. A cross-sectional model was compiled, taking into account the joint work of concrete, rigid and flexible reinforcement, and their deformation diagrams, taking into account physical nonlinearity. A criterion for the destruction of the cross section of a steel-reinforced concrete element without limiting the limiting deformations of materials under compression is proposed.Results. The prerequisites for using the deformation approach to the calculation of steel-reinforced concrete elements are formulated. Two stages of their operation are considered: under the action of forced shrinkage deformations during concrete hardening and subsequent loading. Using examples of the accepted specimen of compressed steel-reinforced concrete elements, the advantages of the deformation approach in their calculation are shown.Conclusions. The deformation approach to calculation makes it possible to obtain the SSS parameters of compressed steel-reinforced concrete elements of arbitrary cross-section shape with different distribution of reinforcement over the cross-section, to take into account the nonlinearity of deformation of materials, concrete shrinkage. The proposed criterion for the destruction of compressed steel-reinforced concrete elements allows to take into account the redistribution of forces between concrete, rigid and flexible reinforcement to full extent.https://www.vestnikmgsu.ru/jour/article/view/371compressed steel-reinforced concrete elementdeformation approachdeformation diagramssystem of equations of equilibrium and joint deformation of cross-sectionhypothesis of plane sectionsfailure criterionnonlinearity of deformation |
| spellingShingle | D. N. Lazouski A. I. Hil D. O. Hlukhau Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements Vestnik MGSU compressed steel-reinforced concrete element deformation approach deformation diagrams system of equations of equilibrium and joint deformation of cross-section hypothesis of plane sections failure criterion nonlinearity of deformation |
| title | Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements |
| title_full | Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements |
| title_fullStr | Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements |
| title_full_unstemmed | Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements |
| title_short | Deformation approach to the calculation of compressive strength of steel-reinforced concrete elements |
| title_sort | deformation approach to the calculation of compressive strength of steel reinforced concrete elements |
| topic | compressed steel-reinforced concrete element deformation approach deformation diagrams system of equations of equilibrium and joint deformation of cross-section hypothesis of plane sections failure criterion nonlinearity of deformation |
| url | https://www.vestnikmgsu.ru/jour/article/view/371 |
| work_keys_str_mv | AT dnlazouski deformationapproachtothecalculationofcompressivestrengthofsteelreinforcedconcreteelements AT aihil deformationapproachtothecalculationofcompressivestrengthofsteelreinforcedconcreteelements AT dohlukhau deformationapproachtothecalculationofcompressivestrengthofsteelreinforcedconcreteelements |