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Steel and Composite Structures Volume 41, Number 3, November10 2021 , pages 417-435 DOI: https://doi.org/10.12989/scs.2021.41.3.417 |
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Structural bonding for civil engineering structures: New model of composite I-steel-concrete beam strengthened with CFRP plate |
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Bensatallah Tayeb, Tahar Hassaine Daouadji, Rabahi Abderezak and Abdelouahed Tounsi
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| Abstract | ||
| In this paper, a composite beam element has been developed in this study, the composite steel-concrete beam strengthened with CFRP plate element can be used to model the nonlinear behavior of composite beams. The problem of slip and interfacial stresses in composite steel-concrete beam strengthened with CFRP plate is analyzed using linear elastic theory. The analysis is based on the deformation compatibility approach, where both the shear and normal stresses are assumed to be invariant across the adhesive layer thickness. The adopted model takes into account the adherend shear deformations by assuming a linear shear stress through the depth of the composite steel-concrete beam. This solution is intended for application to beams made of all kinds of materials bonded with a thin composite plate. For composite steel-concrete beam section, a geometrical coefficient is determined to show the effect of the adherend shear deformations. The theoretical predictions are compared with other existing solutions analytical and experimental which demonstrates the accuracy of the used element. Finally, numerical comparisons between the existing solutions and the present new solution enable a clear appreciation of the effects of various parameters. This research is helpful for the understanding on mechanical behaviour of the interface and design of such structures. | ||
| Key Words | ||
| adhesive bonding; CFRP plate; interfacial stresses; I-Steel-concrete composite beam; strengthening | ||
| Address | ||
| Bensatallah Tayeb, Tahar Hassaine Daouadji and Rabahi Abderezak: Laboratory of Geomatics and sustainable development, University of Tiaret, Algeria; Department of Civil Engineering, Ibn Khaldoun University of Tiaret, Algeria Abdelouahed Tounsi: YFL (Yonsei Frontier Lab), Yonsei University, Seoul, Korea; Department of Civil and Environmental Engineering, King Fahd University of Petroleum & Minerals, Eastern Province, Saudi Arabia; University of Sidi Bel Abbes, Faculty of Technology, Civil Engineering Department, Algeria | ||