Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality
Corrosion of steel reinforcement in concrete is a common problem for reinforced concrete buildings in coastal regions. It can have significant impacts on the seismic performance of these buildings. Corrosion in reinforced concrete members can cause problems such as concrete cover removal, longitudin...
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| Format: | Article |
| Language: | English |
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Semnan University
2025-05-01
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| Series: | Journal of Rehabilitation in Civil Engineering |
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| Online Access: | https://civiljournal.semnan.ac.ir/article_8941_d41d8cd98f00b204e9800998ecf8427e.pdf |
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| author | Mohammad Amiri Amirhossein Jafray Ali Khoddam Mohsen Ali Shayanfar Sajad Zarei |
| author_facet | Mohammad Amiri Amirhossein Jafray Ali Khoddam Mohsen Ali Shayanfar Sajad Zarei |
| author_sort | Mohammad Amiri |
| collection | DOAJ |
| description | Corrosion of steel reinforcement in concrete is a common problem for reinforced concrete buildings in coastal regions. It can have significant impacts on the seismic performance of these buildings. Corrosion in reinforced concrete members can cause problems such as concrete cover removal, longitudinal cracks in concrete, and reduction of the cross-sectional area of steel reinforcements. Moreover, corrosion causes changes in the stress-strain curves of reinforcement steel, reducing its resistance. This study investigates the impact of corrosion on the seismic performance of a four-story concrete frame. In this context, moment-curvature curves for structural elements are first obtained, considering the impacts of corrosion on steel reinforcements and concrete. These curves are then used to model the plastic hinges under corrosion conditions in a nonlinear static (pushover) analysis of corroded RC frames. The pushover curves are then utilized to investigate the impacts of corrosion on the ductility and seismic capacity of the frame. The results show that corrosion significantly impacts the ductility of Reinforced Concrete (RC) frames and can increase the probability of collapse. Fragility curves obtained by incremental dynamic analysis show that the probability of exceeding damage states for structures with higher values of water-to-cement ratio in a corrosion scenario with columns exposed on two sides is significantly higher. |
| format | Article |
| id | doaj-art-1a6b9cbfb03c4b4e9c85364523446336 |
| institution | DOAJ |
| issn | 2345-4415 2345-4423 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Rehabilitation in Civil Engineering |
| spelling | doaj-art-1a6b9cbfb03c4b4e9c853645234463362025-08-20T03:12:58ZengSemnan UniversityJournal of Rehabilitation in Civil Engineering2345-44152345-44232025-05-01132759310.22075/jrce.2024.32075.19158941Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete QualityMohammad Amiri0Amirhossein Jafray1Ali Khoddam2Mohsen Ali Shayanfar3Sajad Zarei4School of Civil Engineering, Iran Univ. of Science and Technology, Tehran, IranDepartment of Civil and Geomatics Engineering, Arak University of Technology, Arak, IranDepartment of Civil and Geomatics Engineering, Arak University of Technology, Arak, IranSchool of Civil Engineering, Iran Univ. of Science and Technology, Tehran, IranSchool of Civil Engineering, Iran Univ. of Science and Technology, Tehran, IranCorrosion of steel reinforcement in concrete is a common problem for reinforced concrete buildings in coastal regions. It can have significant impacts on the seismic performance of these buildings. Corrosion in reinforced concrete members can cause problems such as concrete cover removal, longitudinal cracks in concrete, and reduction of the cross-sectional area of steel reinforcements. Moreover, corrosion causes changes in the stress-strain curves of reinforcement steel, reducing its resistance. This study investigates the impact of corrosion on the seismic performance of a four-story concrete frame. In this context, moment-curvature curves for structural elements are first obtained, considering the impacts of corrosion on steel reinforcements and concrete. These curves are then used to model the plastic hinges under corrosion conditions in a nonlinear static (pushover) analysis of corroded RC frames. The pushover curves are then utilized to investigate the impacts of corrosion on the ductility and seismic capacity of the frame. The results show that corrosion significantly impacts the ductility of Reinforced Concrete (RC) frames and can increase the probability of collapse. Fragility curves obtained by incremental dynamic analysis show that the probability of exceeding damage states for structures with higher values of water-to-cement ratio in a corrosion scenario with columns exposed on two sides is significantly higher.https://civiljournal.semnan.ac.ir/article_8941_d41d8cd98f00b204e9800998ecf8427e.pdfsteel reinforcement corrosionseismic performancenonlinear static analysisnonlinear dynamic analysisfragility curve |
| spellingShingle | Mohammad Amiri Amirhossein Jafray Ali Khoddam Mohsen Ali Shayanfar Sajad Zarei Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality Journal of Rehabilitation in Civil Engineering steel reinforcement corrosion seismic performance nonlinear static analysis nonlinear dynamic analysis fragility curve |
| title | Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality |
| title_full | Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality |
| title_fullStr | Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality |
| title_full_unstemmed | Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality |
| title_short | Time-Dependent Seismic Fragility of RC Moment Frames in Corrosive Environment Considering Concrete Quality |
| title_sort | time dependent seismic fragility of rc moment frames in corrosive environment considering concrete quality |
| topic | steel reinforcement corrosion seismic performance nonlinear static analysis nonlinear dynamic analysis fragility curve |
| url | https://civiljournal.semnan.ac.ir/article_8941_d41d8cd98f00b204e9800998ecf8427e.pdf |
| work_keys_str_mv | AT mohammadamiri timedependentseismicfragilityofrcmomentframesincorrosiveenvironmentconsideringconcretequality AT amirhosseinjafray timedependentseismicfragilityofrcmomentframesincorrosiveenvironmentconsideringconcretequality AT alikhoddam timedependentseismicfragilityofrcmomentframesincorrosiveenvironmentconsideringconcretequality AT mohsenalishayanfar timedependentseismicfragilityofrcmomentframesincorrosiveenvironmentconsideringconcretequality AT sajadzarei timedependentseismicfragilityofrcmomentframesincorrosiveenvironmentconsideringconcretequality |