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FE Modeling of FRP-Repaired Planar Concrete Elements Subjected to Monotonic and Cyclic Loading |
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| Authors: | Nantawat Khomwan Stephen J Foster Scott T Smith |
| Affiliation: | 1Lecturer, Dept. of Civil Engineering, Kasetsart Univ., Kamphaengsan Campus, Nakhon Pathom, Thailand. E-mail: fengnwk@ku.ac.th 2Professor, School of Civil and Environmental Engineering, The Univ. of New South Wales (UNSW), Sydney, New South Wales 2052, Australia. E-mail: S.Foster@unsw.edu.au 3Assistant Professor, Dept. of Civil Engineering, The Univ. of Hong Kong, Hong Kong, China (corresponding author). E-mail: stsmith@hku.hk |
| Abstract: | In this paper, a nonlinear finite-element model is developed for the analysis of plane stress members, such as RC beams and walls, strengthened either unidirectionally or bidirectionally with fiber-reinforced polymer (FRP) composites and subjected to either monotonic or cyclic loading. The model takes into account the effects of the bonded interface between the FRP and concrete while allowing slippage in each direction. A two-dimensional membrane contact element is developed to model the effects of local bond-slip with debonding failure between the FRP and concrete capable of being captured. The model has been incorporated into a finite-element program for the analysis of RC members subject to plane stress with verification against test data of FRP-strengthened RC joints, beams, and walls. The numerical results show good agreement with the experimental data for both load-displacement responses and for the overall failure mechanisms. |
| Keywords: | Finite element method Bonding Reinforced concrete Rehabilitation Slip Fiber reinforced polymer Cyclic loads |