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PROCEEDINGS OF THE FIFTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING
Edited by: J. Kruis, Y. Tsompanakis and B.H.V. Topping
Finite Element Modeling of the Shear Strength of Concrete Beams Reinforced with CFRP Bars subject to Unsymmetrical Loading
R. Hawileh and J. Abdalla
Department of Civil Engineering, American University of Sharjah, United Arab Emirates
R. Hawileh, J. Abdalla, "Finite Element Modeling of the Shear Strength of Concrete Beams Reinforced with CFRP Bars subject to Unsymmetrical Loading", in J. Kruis, Y. Tsompanakis, B.H.V. Topping, (Editors), "Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Stirlingshire, UK, Paper 193, 2015. doi:10.4203/ccp.108.193
Keywords: computational modeling, concrete, fiber reinforced polymer, basalt bars, shear strength, reinforced beams.
The objective of this paper is to predict numerically the shear strength of concrete beams reinforced with longitudinal carbon fiber reinforced polymer (CFRP) bars when subjected to unsymmetrical loading. Two finite element (FE) models are developed to simulate the response of the beam specimens tested by other researchers. The developed models incorporated the nonlinear concrete material property in tension and compression. The CFRP longitudinal reinforcement is modeled as elastic brittle materials. The two simply supported beams are loaded in three-point bending at two unsymmetrical distances from the beam's support. In order to validate the accuracy of the FE models developed, the predicted load-deflection curves at midspan, shear force at the left support, shear force at the right support, the ultimate shear strength and failure modes were compared with the experimental results. A fairly good correlation has been observed between the experimental and numerical results. The developed FE models will be validated further, in a future research, by simulating the response of other tested beams published in the literature. The models will also be used to study the effect of the beam size and other FRP reinforcing materials on the shear strength of reinforced concrete beams when subjected to unsymmetrical loading.
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