An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates
An experimental study is conducted and a theoretical solution is proposed in the present study to investigate the ductile/brittle failure mode of reinforced concrete (RC) beams strengthened with an external steel plate. In the present experimental study, 6 steel plate-strengthened RC beams and 1 non...
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| Language: | English |
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Gruppo Italiano Frattura
2022-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/3489/3567 |
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| author | Van-Hau Nguyen Thanh Bui-Tien Phe Van Pham Long Nguyen-Ngoc |
| author_facet | Van-Hau Nguyen Thanh Bui-Tien Phe Van Pham Long Nguyen-Ngoc |
| author_sort | Van-Hau Nguyen |
| collection | DOAJ |
| description | An experimental study is conducted and a theoretical solution is proposed in the present study to investigate the ductile/brittle failure mode of reinforced concrete (RC) beams strengthened with an external steel plate. In the present experimental study, 6 steel plate-strengthened RC beams and 1 non-strengthened RC beam are fabricated and tested under 4-point bending loads. Then, a new theoretical model is successfully developed to predict the rupture mechanism of the RC beams strengthened with external steel plates. The model is based on the observed experimental results regarding to crack formations, and it is can be used to determine the distance between vertical cracks and to quantitatively predict the ductile/brittle failure mode of plate-strengthened RC beams. The experimental study shows that the failure mode is commonly based on the sliding of concrete along with the external plate at a random location. This slip is limited between two vertical cracks, from which the maximum stresses in the external steel is determined. Through result validations, the stresses/strains in the soffit plate, crack distances, and system failure modes as predicted by the present theoretical solution are found to excellently agree with those of the previous and present experimental results. This study may help to improve the design of such plate-strengthened RC beams to target on a better ductile performance, that has not been addressed before |
| format | Article |
| id | doaj-art-34544240972c4ec1853fe4525a63712e |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2022-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-34544240972c4ec1853fe4525a63712e2025-01-03T00:38:47ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932022-07-01166119821310.3221/IGF-ESIS.61.1310.3221/IGF-ESIS.61.13An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel platesVan-Hau NguyenThanh Bui-TienPhe Van PhamLong Nguyen-NgocAn experimental study is conducted and a theoretical solution is proposed in the present study to investigate the ductile/brittle failure mode of reinforced concrete (RC) beams strengthened with an external steel plate. In the present experimental study, 6 steel plate-strengthened RC beams and 1 non-strengthened RC beam are fabricated and tested under 4-point bending loads. Then, a new theoretical model is successfully developed to predict the rupture mechanism of the RC beams strengthened with external steel plates. The model is based on the observed experimental results regarding to crack formations, and it is can be used to determine the distance between vertical cracks and to quantitatively predict the ductile/brittle failure mode of plate-strengthened RC beams. The experimental study shows that the failure mode is commonly based on the sliding of concrete along with the external plate at a random location. This slip is limited between two vertical cracks, from which the maximum stresses in the external steel is determined. Through result validations, the stresses/strains in the soffit plate, crack distances, and system failure modes as predicted by the present theoretical solution are found to excellently agree with those of the previous and present experimental results. This study may help to improve the design of such plate-strengthened RC beams to target on a better ductile performance, that has not been addressed beforehttps://www.fracturae.com/index.php/fis/article/view/3489/3567external steel platestrengthening reinforcement concrete beamflexural reinforcement limittension chord modelductile failure conditions |
| spellingShingle | Van-Hau Nguyen Thanh Bui-Tien Phe Van Pham Long Nguyen-Ngoc An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates Fracture and Structural Integrity external steel plate strengthening reinforcement concrete beam flexural reinforcement limit tension chord model ductile failure conditions |
| title | An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates |
| title_full | An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates |
| title_fullStr | An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates |
| title_full_unstemmed | An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates |
| title_short | An experimental study and a proposed theoretical solution for the prediction of the ductile/brittle failure modes of reinforced concrete beams strengthened with external steel plates |
| title_sort | experimental study and a proposed theoretical solution for the prediction of the ductile brittle failure modes of reinforced concrete beams strengthened with external steel plates |
| topic | external steel plate strengthening reinforcement concrete beam flexural reinforcement limit tension chord model ductile failure conditions |
| url | https://www.fracturae.com/index.php/fis/article/view/3489/3567 |
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