Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons
This research is devoted to study the strengthening technique for the existing reinforced concrete beams using external post-tensioning. An analytical methodology is proposed to predict the value of the effective prestress force for the external tendons required to close cracks in existing beams. T...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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University of Baghdad
2023-06-01
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| Series: | Journal of Engineering |
| Subjects: | |
| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2296 |
| _version_ | 1797782880844251136 |
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| author | Nazar K. Ali Oukaili Ihab Nabeel Issa Al-Shawi |
| author_facet | Nazar K. Ali Oukaili Ihab Nabeel Issa Al-Shawi |
| author_sort | Nazar K. Ali Oukaili |
| collection | DOAJ |
| description |
This research is devoted to study the strengthening technique for the existing reinforced concrete beams using external post-tensioning. An analytical methodology is proposed to predict the value of the effective prestress force for the external tendons required to close cracks in existing beams. The external prestressing force required to close cracks in existing members is only a part from the total strengthening force.
A computer program created by Oukaili (1997) and developed by Alhawwassi (2008) to evaluate curvature and deflection for reinforced concrete beams or internally prestressed concrete beams is modified to evaluate the deflection and the stress of the external tendons for the externally strengthened beams using Matlab 7.0.
The analytical investigation is implemented on three ideal reinforced concrete beam models, each model is considered to be strengthened using three types of external tendon profile (straight, draped and double draped), where each type of tendon profile is analyzed separately. No comparisons were made with analytical or experimental investigations, because no publications for this kind of studies were found.
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| first_indexed | 2024-03-13T00:18:13Z |
| format | Article |
| id | doaj.art-3e4c89d096b24b25ba0f2abee79dfe42 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-13T00:18:13Z |
| publishDate | 2023-06-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-3e4c89d096b24b25ba0f2abee79dfe422023-07-11T18:34:26ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392023-06-01191110.31026/j.eng.2013.11.01Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned TendonsNazar K. Ali OukailiIhab Nabeel Issa Al-Shawi This research is devoted to study the strengthening technique for the existing reinforced concrete beams using external post-tensioning. An analytical methodology is proposed to predict the value of the effective prestress force for the external tendons required to close cracks in existing beams. The external prestressing force required to close cracks in existing members is only a part from the total strengthening force. A computer program created by Oukaili (1997) and developed by Alhawwassi (2008) to evaluate curvature and deflection for reinforced concrete beams or internally prestressed concrete beams is modified to evaluate the deflection and the stress of the external tendons for the externally strengthened beams using Matlab 7.0. The analytical investigation is implemented on three ideal reinforced concrete beam models, each model is considered to be strengthened using three types of external tendon profile (straight, draped and double draped), where each type of tendon profile is analyzed separately. No comparisons were made with analytical or experimental investigations, because no publications for this kind of studies were found. https://joe.uobaghdad.edu.iq/index.php/main/article/view/2296Strengthening, Post-Tensioning, Draped Tendons, Deflection, Curvature and Reinforced Concrete |
| spellingShingle | Nazar K. Ali Oukaili Ihab Nabeel Issa Al-Shawi Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons Journal of Engineering Strengthening, Post-Tensioning, Draped Tendons, Deflection, Curvature and Reinforced Concrete |
| title | Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons |
| title_full | Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons |
| title_fullStr | Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons |
| title_full_unstemmed | Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons |
| title_short | Strengthening and Closing Cracks for Existing Reinforced Concrete Girders Using Externally Post-Tensioned Tendons |
| title_sort | strengthening and closing cracks for existing reinforced concrete girders using externally post tensioned tendons |
| topic | Strengthening, Post-Tensioning, Draped Tendons, Deflection, Curvature and Reinforced Concrete |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2296 |
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