FINITE ELEMENT MODELING AND PARAMETRIC STUDY OF FRP-CONFINED CONCRETE
Oral Presentation
Paper ID : 1189-ICASGE
Authors
1University of Calgary-Department of Civil Engineering
2Department of Civil Engineering, University of Calgary
Abstract
Finite Element Analysis (FEA) has become an essential tool for evaluating the structural performance of Fibre Reinforced Polymer (FRP) confined concrete. However, existing FE models often fail to fully and accurately capture the complex behaviours of FRP-confined concrete under varying loading conditions and confinement configurations. This study addresses these limitations by developing an advanced finite element (FE) model based on an extended Drucker-Prager (DP) plasticity-based constitutive framework. Designed for materials like concrete that exhibit pressure-dependent yielding and hardening-softening behaviour, the model is specifically tailored to simulate the compressive behaviour of FRP-confined concrete. By integrating experimental data and refining critical parameters, the FE model achieves significantly enhanced predictive accuracy and reliability. A parametric study using the proposed FE model investigates the effects of key parameters, such as FRP jacket thickness and type, on the strength and deformability of FRP-confined concrete. The results indicate that increasing the jacket thickness and modulus of elasticity substantially enhances confinement effectiveness and strain capacity. This study demonstrates the accuracy and robustness of the proposed extended Drucker-Prager FE model in advancing the understanding of FRP-confined concrete behaviour, providing valuable insights for optimizing the design and application of FRP composites in structural engineering.
Keywords