Sensitivity analysis of reinforced concrete beams strengthened with FRP laminates |
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| Affiliation: | 1. Department of Civil and Environmental Engineering, The Pennsylvania State University, 3127 Research Drive CATO Park, Room 117, State College, PA 16801, USA;2. Department of Civil and Environmental Engineering, The Pennsylvania State University, 212 Sackett Building, University Park, State College, PA 16802-1408, USA;1. Faculty of Science, Engineering and Technology, Swinburne University of Technology, Hawthorn, VIC 3122, Australia;2. Department of Civil and Environmental Engineering, National University of Singapore, 117576 Singapore;1. School of Civil, Environmental, and Mining Engineering, University of Adelaide, Australia;2. School of Natural and Built Environments, University of South Australia, South Australia, Australia;3. College of Science and Engineering, Flinders University, Australia;4. Department of Civil Engineering, Gifu University, Gifu, Japan;1. Laboratory of Materials Sciences and Environment, Hassiba Benbouali University of Chlef, Chlef, Algeria;2. Ibn Khaldoun University, Tiaret, Algeria;3. Larbi Tebessi University, Tebessa, Algeria;4. University of Clermont Auvergne, Institut Pascal, UMR 6602, 63174 Aubière Cedex, France;1. Department of Civil Engineering, Yazd University, Yazd, Iran;2. School of Civil Engineering, Iran University of Science and Technology, Tehran, Iran;3. Centre for Infrastructure Engineering, Western Sydney University, Sydney, Australia |
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| Abstract: | Numerical procedures are proposed to predict the failure of reinforced concrete (RC) beams strengthened in flexure with fiber-reinforced polymeric (FRP) laminates. The framework of damage mechanics was used during the modeling. Numerical results were validated against experimental data obtained from 19 beams strengthened with different types of FRP. These beams failed by concrete crushing, cover failure and plate debonding. The numerical models were capable of predicting the experimentally observed load–deflection, failure load and failure modes. The sensitivity of the numerical results was studied. In particular, the effect of the concrete constitutive behavior and different modeling considerations was evaluated. It was found that the fracture energy of the concrete–repair interface plays a central part in predicting plate-debonding failures. |
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