Analytical model of deformation of reinforced concrete columns based on fracture mechanics
When conducting seismic calculations of reinforced concrete buildings and structures, it is quite important to use nonlinear models of structural performance, including those taking into account the overcritical operation in the fracture stage. The application of such models is especially important...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Peoples’ Friendship University of Russia (RUDN University)
2022-12-01
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| Series: | Structural Mechanics of Engineering Constructions and Buildings |
| Subjects: | |
| Online Access: | https://journals.rudn.ru/structural-mechanics/article/viewFile/33553/21727 |
| _version_ | 1811164446304763904 |
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| author | Ashot G. Tamrazyan Vladimir I. Chernik Tatiana A. Matseevich Ivan K. Manaenkov |
| author_facet | Ashot G. Tamrazyan Vladimir I. Chernik Tatiana A. Matseevich Ivan K. Manaenkov |
| author_sort | Ashot G. Tamrazyan |
| collection | DOAJ |
| description | When conducting seismic calculations of reinforced concrete buildings and structures, it is quite important to use nonlinear models of structural performance, including those taking into account the overcritical operation in the fracture stage. The application of such models is especially important if the structures have an initial damage from fire or corrosion, as well as mechanical damage caused by force factors. The purpose of this study is to develop an analytical model of the deformation of eccentrically compressed reinforced concrete columns considering the stage of failure, which includes such processes as spelling of the protective layer, loss of stability of compressed reinforcement, and softening of confined concrete after reaching the design resistance. The existing models describing hysteresis behavior of reinforced concrete structures under low-cycle loading have been reviewed. The models have been analyzed in terms of considering the defining monotone curves, which are the boundaries of cyclic deformation. The model proposed in the research is constructed by analyzing the stages of the stress-strain state of a reinforced concrete column. At each stage, formulas are found for determining moment and curvature by solving equations of equilibrium of internal forces. Calculations based on the obtained model for a particular reinforced concrete column are carried out, monotonous diagrams are obtained, and a conclusion about the significant influence of the level of axial load on the character of deformation is made. On the basis of the obtained model, the construction of hysteresis diagrams under low-cycle loading is expected in the future. |
| first_indexed | 2024-04-10T15:22:36Z |
| format | Article |
| id | doaj.art-6237e59103c94749ac556f32d09bb60b |
| institution | Directory Open Access Journal |
| issn | 1815-5235 2587-8700 |
| language | English |
| last_indexed | 2024-04-10T15:22:36Z |
| publishDate | 2022-12-01 |
| publisher | Peoples’ Friendship University of Russia (RUDN University) |
| record_format | Article |
| series | Structural Mechanics of Engineering Constructions and Buildings |
| spelling | doaj.art-6237e59103c94749ac556f32d09bb60b2023-02-14T13:33:03ZengPeoples’ Friendship University of Russia (RUDN University)Structural Mechanics of Engineering Constructions and Buildings1815-52352587-87002022-12-0118657358310.22363/1815-5235-2022-18-6-573-58320968Analytical model of deformation of reinforced concrete columns based on fracture mechanicsAshot G. Tamrazyan0https://orcid.org/0000-0003-0569-4788Vladimir I. Chernik1https://orcid.org/0000-0001-6240-9993Tatiana A. Matseevich2https://orcid.org/0000-0001-6292-0759Ivan K. Manaenkov3https://orcid.org/0000-0002-5260-8793National Research Moscow State University of Civil EngineeringNational Research Moscow State University of Civil EngineeringNational Research Moscow State University of Civil EngineeringNational Research Moscow State University of Civil EngineeringWhen conducting seismic calculations of reinforced concrete buildings and structures, it is quite important to use nonlinear models of structural performance, including those taking into account the overcritical operation in the fracture stage. The application of such models is especially important if the structures have an initial damage from fire or corrosion, as well as mechanical damage caused by force factors. The purpose of this study is to develop an analytical model of the deformation of eccentrically compressed reinforced concrete columns considering the stage of failure, which includes such processes as spelling of the protective layer, loss of stability of compressed reinforcement, and softening of confined concrete after reaching the design resistance. The existing models describing hysteresis behavior of reinforced concrete structures under low-cycle loading have been reviewed. The models have been analyzed in terms of considering the defining monotone curves, which are the boundaries of cyclic deformation. The model proposed in the research is constructed by analyzing the stages of the stress-strain state of a reinforced concrete column. At each stage, formulas are found for determining moment and curvature by solving equations of equilibrium of internal forces. Calculations based on the obtained model for a particular reinforced concrete column are carried out, monotonous diagrams are obtained, and a conclusion about the significant influence of the level of axial load on the character of deformation is made. On the basis of the obtained model, the construction of hysteresis diagrams under low-cycle loading is expected in the future.https://journals.rudn.ru/structural-mechanics/article/viewFile/33553/21727reinforced concrete columndeformation diagramstages of destructionhysteresisseismiclow-cycle loads |
| spellingShingle | Ashot G. Tamrazyan Vladimir I. Chernik Tatiana A. Matseevich Ivan K. Manaenkov Analytical model of deformation of reinforced concrete columns based on fracture mechanics Structural Mechanics of Engineering Constructions and Buildings reinforced concrete column deformation diagram stages of destruction hysteresis seismic low-cycle loads |
| title | Analytical model of deformation of reinforced concrete columns based on fracture mechanics |
| title_full | Analytical model of deformation of reinforced concrete columns based on fracture mechanics |
| title_fullStr | Analytical model of deformation of reinforced concrete columns based on fracture mechanics |
| title_full_unstemmed | Analytical model of deformation of reinforced concrete columns based on fracture mechanics |
| title_short | Analytical model of deformation of reinforced concrete columns based on fracture mechanics |
| title_sort | analytical model of deformation of reinforced concrete columns based on fracture mechanics |
| topic | reinforced concrete column deformation diagram stages of destruction hysteresis seismic low-cycle loads |
| url | https://journals.rudn.ru/structural-mechanics/article/viewFile/33553/21727 |
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