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- Title
Microplane-Based Nonlinear Finite Element Analysis of Fiber-Reinforced Polymer-Strengthened Reinforced Concrete Columns.
- Authors
Chellapandian, M.; Prakash, S. Suriya; Mahadik, Vinay; Sharma, Akanshu
- 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.
- Subjects
NONLINEAR analysis; CONCRETE columns; FINITE element method; ECCENTRIC loads; AXIAL loads; FAILURE mode &; effects analysis; REINFORCED concrete
- Publication
ACI Structural Journal, 2020, Vol 117, Issue 1, p255
- ISSN
0889-3241
- Publication type
Article
- DOI
10.14359/51718075