Microplane-Based Nonlinear Finite Element Analysis of Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Columns

Chellapandian, M. and Prakash, S. Suriya and Mahadik, Vinay and Sharma, Akanshu (2020) Microplane-Based Nonlinear Finite Element Analysis of Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Columns. ACI Structural Journal, 117 (1). ISSN 0889-3241

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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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IITH Creators:
IITH CreatorsORCiD
Chellapandian, M.UNSPECIFIED
Prakash, S. SuriyaUNSPECIFIED
Item Type: Article
Uncontrolled Keywords: Eccentric compression; Finite element (FE) analysis; Hybrid fiber-reinforced polymer (FRP) strengthening; Interaction diagram; Near-surface mounting (NSM) strengthening; Reinforced concrete (RC) columns
Subjects: Civil Engineering
Divisions: Department of Civil Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 28 Jul 2021 07:38
Last Modified: 28 Jul 2021 07:38
URI: http://raiith.iith.ac.in/id/eprint/8557
Publisher URL: http://doi.org/10.14359/51718075
OA policy: https://v2.sherpa.ac.uk/id/publication/10354
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