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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Microplane-Based Nonlinear Finite Element Analysis of Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Columns
Author(s): M. Chellapandian, S. Suriya Prakash, Vinay Mahadik, and Akanshu Sharma
Publication: Structural Journal
Appears on pages(s): 255-268
Keywords: eccentric compression; finite element (FE) analysis; hybrid fiber-reinforced polymer (FRP) strengthening; interaction diagram; near-surface mounting (NSM) strengthening; reinforced concrete (RC) columns
Abstract:This paper presents the results of nonlinear finite element (FE) analysis of fiber-reinforced polymer (FRP)-strengthened reinforced concrete (RC) columns under different combinations of axial compression (P) and bending (M) loads. Three-dimensional FE models of RC columns were analyzed for different eccentricity (e) to depth (h) ratios as: a) axial loading (e/h = 0); b) uniaxial eccentric loading (e/h = 0.15 and 0.63); and c) pure bending (e/h = ∞). Three different strengthening schemes—namely, 1) near-surface mounting (NSM); 2) external bonding (EB); and 3) hybrid strengthening—were considered. The load-displacement curves, P-M interaction diagram, and failure modes from FE analysis and experiments compared quite well. The validated FE modeling approach was used for performing parametric investigation to evaluate the influence of: 1) concrete strength; 2) carbon FRP (CFRP) laminate ratio in NSM strengthening; 3) CFRP fabric ratio in EB technique; and 4) CFRP ratios in hybrid strengthening.
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