Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing
This research paper presents an experimental and numerical study on the behavior of reinforced concrete (RC) in exterior beam-column joints designed for seismic conditions. Three laboratory specimens were prepared and tested to evaluate their load-bearing capacity and study the joint behavior under...
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| Format: | Article |
| Language: | English |
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Semnan University
2026-02-01
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| Series: | Journal of Rehabilitation in Civil Engineering |
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| Online Access: | https://civiljournal.semnan.ac.ir/article_9381_d41d8cd98f00b204e9800998ecf8427e.pdf |
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| author | Ali Owaid Amir Akhaveissy Bahaa Al-Abbas |
| author_facet | Ali Owaid Amir Akhaveissy Bahaa Al-Abbas |
| author_sort | Ali Owaid |
| collection | DOAJ |
| description | This research paper presents an experimental and numerical study on the behavior of reinforced concrete (RC) in exterior beam-column joints designed for seismic conditions. Three laboratory specimens were prepared and tested to evaluate their load-bearing capacity and study the joint behavior under a constant axial load and a gradually increasing peak monotonic load until failure. The experimental results demonstrated convergence among the specimens in terms of the load-displacement curve, displacement ductility, and energy dissipation. This was further confirmed through the use of a Finite Element (FE) analysis model. The numerical analysis exhibited significant convergence between experimental and numerical results. Additionally, the numerical model was retrofitted using Carbon Fiber Reinforced Polymer (CFRP) in two methods: model 1 (CFRP sheets only) and model 2 (CFRP sheets with strips). The retrofitting with CFRP proved suitable for enhancing structure performance, showing an improvement in failure mode and a significant increase in peak monotonic load and energy dissipation by (31 and 26) % for model 1, and by (47 and 36) % for model 2. This provides valuable insights into the behavior of RC exterior beam-column joints, highlighting the importance of retrofitting with CFRP composites. |
| format | Article |
| id | doaj-art-e4ef3ccc1e644c31b3407224dc813a97 |
| institution | OA Journals |
| issn | 2345-4415 2345-4423 |
| language | English |
| publishDate | 2026-02-01 |
| publisher | Semnan University |
| record_format | Article |
| series | Journal of Rehabilitation in Civil Engineering |
| spelling | doaj-art-e4ef3ccc1e644c31b3407224dc813a972025-08-20T02:01:30ZengSemnan UniversityJournal of Rehabilitation in Civil Engineering2345-44152345-44232026-02-0114110.22075/jrce.2024.33704.20439381Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental TestingAli Owaid0Amir Akhaveissy1Bahaa Al-Abbas2Ph.D. Candidate, Department of Civil Engineering, Faculty Engineering, Razi University, Kermanshah, IranAssociate Professor, Department of Civil Engineering, Faculty Engineering, Razi University, Kermanshah, IranAssistant Professor, Department of Civil Engineering, Faculty Engineering, Kerbala University, Kerbala, IraqThis research paper presents an experimental and numerical study on the behavior of reinforced concrete (RC) in exterior beam-column joints designed for seismic conditions. Three laboratory specimens were prepared and tested to evaluate their load-bearing capacity and study the joint behavior under a constant axial load and a gradually increasing peak monotonic load until failure. The experimental results demonstrated convergence among the specimens in terms of the load-displacement curve, displacement ductility, and energy dissipation. This was further confirmed through the use of a Finite Element (FE) analysis model. The numerical analysis exhibited significant convergence between experimental and numerical results. Additionally, the numerical model was retrofitted using Carbon Fiber Reinforced Polymer (CFRP) in two methods: model 1 (CFRP sheets only) and model 2 (CFRP sheets with strips). The retrofitting with CFRP proved suitable for enhancing structure performance, showing an improvement in failure mode and a significant increase in peak monotonic load and energy dissipation by (31 and 26) % for model 1, and by (47 and 36) % for model 2. This provides valuable insights into the behavior of RC exterior beam-column joints, highlighting the importance of retrofitting with CFRP composites.https://civiljournal.semnan.ac.ir/article_9381_d41d8cd98f00b204e9800998ecf8427e.pdfexterior beam column jointspeak monotonic loadreinforced concreteretrofitting numerical modelenergy dissipation |
| spellingShingle | Ali Owaid Amir Akhaveissy Bahaa Al-Abbas Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing Journal of Rehabilitation in Civil Engineering exterior beam column joints peak monotonic load reinforced concrete retrofitting numerical model energy dissipation |
| title | Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing |
| title_full | Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing |
| title_fullStr | Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing |
| title_full_unstemmed | Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing |
| title_short | Retrofitting Seismically Designed Exterior Beam-Column Joints under Lateral Monotonic Loading: A Numerical Analysis Based on Experimental Testing |
| title_sort | retrofitting seismically designed exterior beam column joints under lateral monotonic loading a numerical analysis based on experimental testing |
| topic | exterior beam column joints peak monotonic load reinforced concrete retrofitting numerical model energy dissipation |
| url | https://civiljournal.semnan.ac.ir/article_9381_d41d8cd98f00b204e9800998ecf8427e.pdf |
| work_keys_str_mv | AT aliowaid retrofittingseismicallydesignedexteriorbeamcolumnjointsunderlateralmonotonicloadinganumericalanalysisbasedonexperimentaltesting AT amirakhaveissy retrofittingseismicallydesignedexteriorbeamcolumnjointsunderlateralmonotonicloadinganumericalanalysisbasedonexperimentaltesting AT bahaaalabbas retrofittingseismicallydesignedexteriorbeamcolumnjointsunderlateralmonotonicloadinganumericalanalysisbasedonexperimentaltesting |