Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating
The literature review showed insufficient relevant research on the application of Glass-Fiber-Reinforced-Polymers (GFRP) gratings in the structural elements, while GFRP bars, laminate, sheets, and strips, have been extensively explored. This research aims to present a proposal for a new reinforcing...
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Gruppo Italiano Frattura
2024-02-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/4521 |
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| author | Ahmed Mahmoud Haitham Mostafa Tarek Mostafa Ahmed Khater |
| author_facet | Ahmed Mahmoud Haitham Mostafa Tarek Mostafa Ahmed Khater |
| author_sort | Ahmed Mahmoud |
| collection | DOAJ |
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The literature review showed insufficient relevant research on the application of Glass-Fiber-Reinforced-Polymers (GFRP) gratings in the structural elements, while GFRP bars, laminate, sheets, and strips, have been extensively explored. This research aims to present a proposal for a new reinforcing system using GFRP gratings to improve the punching shear resistance of RC flat slabs. Results of seven specimens tested experimentally under vertical static loading are displayed, taking into account the influence of the gratings variables. Test results revealed an improvement in the ultimate load ranging between 9.03% and 27.67% for the specimens strengthened by the proposed GFRP grating system. A Nonlinear Finite Element Analysis (NLFEA) was carried out using the ANSYS program with correlational evaluation using load-deflection response and cracking pattern, which resulted in a good convergence of numerical simulations and experimental performance results ranging from 1.0% to 8.0%. Key parameters, namely the concrete compressive strength, steel reinforcement yield strength, main steel reinforcement ratio, secondary steel reinforcement ratio, column dimensions, slab thickness, concrete cover, and GFRP gratings characteristics, were investigated through a parametric study adopting NLFEA by the ANSYS program, where the output results were compared to the recent code provisions.
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| format | Article |
| id | doaj-art-037df8d22795418a9c381b12bdc6dc61 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2024-02-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-037df8d22795418a9c381b12bdc6dc612025-02-03T00:39:16ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932024-02-01186810.3221/IGF-ESIS.68.02Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP gratingAhmed Mahmoud0Haitham Mostafa1https://orcid.org/0009-0004-2287-7564Tarek Mostafa2https://orcid.org/0000-0003-1327-8143Ahmed Khater3https://orcid.org/0000-0003-4528-8979Benha University, Faculty of Engineering at Shoubra, Civil Engineering Department, 108 Shoubra Street, Shoubra 11691, Cairo, EgyptBenha University, Faculty of Engineering at Shoubra, Civil Engineering Department, 108 Shoubra Street, Shoubra 11691, Cairo, EgyptBenha University, Faculty of Engineering at Shoubra, Civil Engineering Department, 108 Shoubra Street, Shoubra 11691, Cairo, EgyptBenha University, Faculty of Engineering at Shoubra, Civil Engineering Department, 108 Shoubra Street, Shoubra 11691, Cairo, Egypt The literature review showed insufficient relevant research on the application of Glass-Fiber-Reinforced-Polymers (GFRP) gratings in the structural elements, while GFRP bars, laminate, sheets, and strips, have been extensively explored. This research aims to present a proposal for a new reinforcing system using GFRP gratings to improve the punching shear resistance of RC flat slabs. Results of seven specimens tested experimentally under vertical static loading are displayed, taking into account the influence of the gratings variables. Test results revealed an improvement in the ultimate load ranging between 9.03% and 27.67% for the specimens strengthened by the proposed GFRP grating system. A Nonlinear Finite Element Analysis (NLFEA) was carried out using the ANSYS program with correlational evaluation using load-deflection response and cracking pattern, which resulted in a good convergence of numerical simulations and experimental performance results ranging from 1.0% to 8.0%. Key parameters, namely the concrete compressive strength, steel reinforcement yield strength, main steel reinforcement ratio, secondary steel reinforcement ratio, column dimensions, slab thickness, concrete cover, and GFRP gratings characteristics, were investigated through a parametric study adopting NLFEA by the ANSYS program, where the output results were compared to the recent code provisions. https://www.fracturae.com/index.php/fis/article/view/4521Punching shearGFRP gratingRC flat slabNumerical analysisExperimental investigationCode provisions |
| spellingShingle | Ahmed Mahmoud Haitham Mostafa Tarek Mostafa Ahmed Khater Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating Fracture and Structural Integrity Punching shear GFRP grating RC flat slab Numerical analysis Experimental investigation Code provisions |
| title | Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating |
| title_full | Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating |
| title_fullStr | Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating |
| title_full_unstemmed | Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating |
| title_short | Enhancement of punching shear behavior of reinforced concrete flat slabs using GFRP grating |
| title_sort | enhancement of punching shear behavior of reinforced concrete flat slabs using gfrp grating |
| topic | Punching shear GFRP grating RC flat slab Numerical analysis Experimental investigation Code provisions |
| url | https://www.fracturae.com/index.php/fis/article/view/4521 |
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