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The present research work has endeavored to investigate the structural behavior of fiber reinforced polymer (FRP) reinforced concrete columns confined with FRP-tubes under axial concentric and eccentric loadings. A finite element analysis (FEA) model of FRP-tube confined concrete columns having longitudinal reinforcements of either carbon fiber reinforced polymer (CFRP) and/or glass fiber reinforced polymer (GFRP) bars, was simulated using a finite element (FE) package ABAQUS 6.14 which was then, calibrated for different material and geometric models of concrete, FRP-tube and FRP longitudinal reinforcement using the experimental results from the literature. The comparative study shows that the proposed FEA model presented a close agreement with the experimental measurements. A detailed parametric study was performed using the FEA model to examine the effects of various parameters of FRP …