Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars
The behavior of concrete deep beams internally-reinforced with glass fiber-reinforced polymer (GFRP) bars around regions of discontinuity is investigated. Twelve deep beam specimens were tested. One specimen was solid whereas the remaining eleven specimens included an opening in the shear span. Test...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-11-01
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| Series: | Composites Part C: Open Access |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666682020300645 |
| _version_ | 1818646580607057920 |
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| author | Somoud Arabasi Tamer El-Maaddawy |
| author_facet | Somoud Arabasi Tamer El-Maaddawy |
| author_sort | Somoud Arabasi |
| collection | DOAJ |
| description | The behavior of concrete deep beams internally-reinforced with glass fiber-reinforced polymer (GFRP) bars around regions of discontinuity is investigated. Twelve deep beam specimens were tested. One specimen was solid whereas the remaining eleven specimens included an opening in the shear span. Test variables included the opening height, concrete grade, and GFRP reinforcing configuration around the discontinuity regions. Three different GFRP reinforcing schemes around the discontinuity regions were employed. The scheme with diagonal GFRP reinforcement crossing the bottom chord was more effective in improving the shear resistance than that having diagonal GFRP reinforcement crossing the top chord. The strength gain caused by the GFRP reinforcement was more significant for the deep beams with the greater opening height. In contrast, increasing the opening height reduced the strength enhancement caused by increasing the concrete grade. Test results were compared to the strut-and-tie modeling (STM) predictions. The STM tended to provide reasonable predictions for the nominal shear strength of the beams reinforced with GFRP bars around the discontinuity regions. Provisions of the Canadian Standards Association provided more conservative predictions for the nominal strength compared with those provided by provisions of the American Concrete Institute. |
| first_indexed | 2024-12-17T00:48:54Z |
| format | Article |
| id | doaj.art-5b08cec642d54594bfdd93f046886da1 |
| institution | Directory Open Access Journal |
| issn | 2666-6820 |
| language | English |
| last_indexed | 2024-12-17T00:48:54Z |
| publishDate | 2020-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Composites Part C: Open Access |
| spelling | doaj.art-5b08cec642d54594bfdd93f046886da12022-12-21T22:09:49ZengElsevierComposites Part C: Open Access2666-68202020-11-013100064Reinforcing of discontinuity regions in concrete deep beams with GFRP composite barsSomoud Arabasi0Tamer El-Maaddawy1Department of Civil and Environmental Engineering, UAEU, P.O. Box 15551, Al Ain, UAECorresponding author.; Department of Civil and Environmental Engineering, UAEU, P.O. Box 15551, Al Ain, UAEThe behavior of concrete deep beams internally-reinforced with glass fiber-reinforced polymer (GFRP) bars around regions of discontinuity is investigated. Twelve deep beam specimens were tested. One specimen was solid whereas the remaining eleven specimens included an opening in the shear span. Test variables included the opening height, concrete grade, and GFRP reinforcing configuration around the discontinuity regions. Three different GFRP reinforcing schemes around the discontinuity regions were employed. The scheme with diagonal GFRP reinforcement crossing the bottom chord was more effective in improving the shear resistance than that having diagonal GFRP reinforcement crossing the top chord. The strength gain caused by the GFRP reinforcement was more significant for the deep beams with the greater opening height. In contrast, increasing the opening height reduced the strength enhancement caused by increasing the concrete grade. Test results were compared to the strut-and-tie modeling (STM) predictions. The STM tended to provide reasonable predictions for the nominal shear strength of the beams reinforced with GFRP bars around the discontinuity regions. Provisions of the Canadian Standards Association provided more conservative predictions for the nominal strength compared with those provided by provisions of the American Concrete Institute.http://www.sciencedirect.com/science/article/pii/S2666682020300645Composite reinforcementGFRPDeep beamsOpeningDiscontinuitySTM |
| spellingShingle | Somoud Arabasi Tamer El-Maaddawy Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars Composites Part C: Open Access Composite reinforcement GFRP Deep beams Opening Discontinuity STM |
| title | Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars |
| title_full | Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars |
| title_fullStr | Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars |
| title_full_unstemmed | Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars |
| title_short | Reinforcing of discontinuity regions in concrete deep beams with GFRP composite bars |
| title_sort | reinforcing of discontinuity regions in concrete deep beams with gfrp composite bars |
| topic | Composite reinforcement GFRP Deep beams Opening Discontinuity STM |
| url | http://www.sciencedirect.com/science/article/pii/S2666682020300645 |
| work_keys_str_mv | AT somoudarabasi reinforcingofdiscontinuityregionsinconcretedeepbeamswithgfrpcompositebars AT tamerelmaaddawy reinforcingofdiscontinuityregionsinconcretedeepbeamswithgfrpcompositebars |