Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP
In this study, three strengthening techniques, near-surface mounted NSM-CRFP, NSM-CFRP with externally bonding EB-CFRP, and hybrid CFRP with circularization were studied to increase the seismic performance of existing RC slender columns under lateral loads. Experimentally, 1:3 scale RC models were...
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| Format: | Article |
| Language: | English |
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D. G. Pylarinos
2022-10-01
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| Series: | Engineering, Technology & Applied Science Research |
| Subjects: | |
| Online Access: | http://www.etasr.com/index.php/ETASR/article/view/5162 |
| _version_ | 1811181656084578304 |
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| author | Z. H. Abdulghafoor H. A. Al-Baghdadi |
| author_facet | Z. H. Abdulghafoor H. A. Al-Baghdadi |
| author_sort | Z. H. Abdulghafoor |
| collection | DOAJ |
| description |
In this study, three strengthening techniques, near-surface mounted NSM-CRFP, NSM-CFRP with externally bonding EB-CFRP, and hybrid CFRP with circularization were studied to increase the seismic performance of existing RC slender columns under lateral loads. Experimentally, 1:3 scale RC models were studied and subjected to both lateral static load and seismic excitation. In the dynamic test, a model was subjected to El Centro 1940 NS earthquake excitation by using a shaking table. According to the test results, the strengthening techniques showed a significant increase in load carrying capacity, of about 86.6%, and 46.6%, for circularization and NSM-CFRP respectively, of the reference unstrengthened columns. On the other hand, columns strengthened with hybrid NSM-CFRP and EB-CFRP showed a different failure mode. Dynamically, the lateral drift was decreased by about 75%, 47%, and 49% for earthquake amplitudes of 0.05g, 0.15g, and 0.32g respectively. Finally, it was concluded, depending on the static and dynamic analyses, that the circularization process showed a significant increase in lateral load-bearing capacity.
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| first_indexed | 2024-04-11T09:21:17Z |
| format | Article |
| id | doaj.art-3add38316d6e4a6dbedd442ed7723d26 |
| institution | Directory Open Access Journal |
| issn | 2241-4487 1792-8036 |
| language | English |
| last_indexed | 2024-04-11T09:21:17Z |
| publishDate | 2022-10-01 |
| publisher | D. G. Pylarinos |
| record_format | Article |
| series | Engineering, Technology & Applied Science Research |
| spelling | doaj.art-3add38316d6e4a6dbedd442ed7723d262022-12-22T04:32:12ZengD. G. PylarinosEngineering, Technology & Applied Science Research2241-44871792-80362022-10-0112510.48084/etasr.5162Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRPZ. H. Abdulghafoor0H. A. Al-Baghdadi1Department of Civil Engineering, University of Baghdad, IraqDepartment of Civil Engineering, College of Engineering, University of Baghdad, Iraq In this study, three strengthening techniques, near-surface mounted NSM-CRFP, NSM-CFRP with externally bonding EB-CFRP, and hybrid CFRP with circularization were studied to increase the seismic performance of existing RC slender columns under lateral loads. Experimentally, 1:3 scale RC models were studied and subjected to both lateral static load and seismic excitation. In the dynamic test, a model was subjected to El Centro 1940 NS earthquake excitation by using a shaking table. According to the test results, the strengthening techniques showed a significant increase in load carrying capacity, of about 86.6%, and 46.6%, for circularization and NSM-CFRP respectively, of the reference unstrengthened columns. On the other hand, columns strengthened with hybrid NSM-CFRP and EB-CFRP showed a different failure mode. Dynamically, the lateral drift was decreased by about 75%, 47%, and 49% for earthquake amplitudes of 0.05g, 0.15g, and 0.32g respectively. Finally, it was concluded, depending on the static and dynamic analyses, that the circularization process showed a significant increase in lateral load-bearing capacity. http://www.etasr.com/index.php/ETASR/article/view/5162CircularizationstrengtheningCFRPNSMdynamicslender column |
| spellingShingle | Z. H. Abdulghafoor H. A. Al-Baghdadi Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP Engineering, Technology & Applied Science Research Circularization strengthening CFRP NSM dynamic slender column |
| title | Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP |
| title_full | Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP |
| title_fullStr | Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP |
| title_full_unstemmed | Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP |
| title_short | Static and Dynamic Behavior of Circularized Reinforced Concrete Columns Strengthened with Hybrid CFRP |
| title_sort | static and dynamic behavior of circularized reinforced concrete columns strengthened with hybrid cfrp |
| topic | Circularization strengthening CFRP NSM dynamic slender column |
| url | http://www.etasr.com/index.php/ETASR/article/view/5162 |
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