Experimental and numerical investigations on concrete filled carbon FRP tube (CFRP-CFFT) columns manufactured with ultra-high-performance fibre reinforced concrete. (1st May 2020)

• Record Type: Journal Article
• Authors: Fang, C.; Mohamed Ali, M.S.; Sheikh, A.H.
• Is Part Of: Composite structures. Volume 239(2020)
• Publication Date: 2020-05-01
• Subjects: Concrete filled carbon FRP tube (CFRP-CFFT) -- Column -- Concentric and eccentric loads -- Finite-element analysis (FEA) -- Ultra-high performance fibre reinforced (UHPFRC); Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2020.111982
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: This study aims to investigate the structural responses of five concrete filled carbon FRP tube (CFRP-CFFT) columns manufactured with ultra-high-performance fibre reinforced concrete (UHPFRC) under concentric or eccentric loading protocols with eccentricities ranging from 0.067D (depth) to 0.57D (depth). One CFRP-CFFT UHPFRC beam with the same cross-section configuration used for columns was subjected to four-point flexural bending. Furthermore, finite element (FE) analysis incorporating concrete damage plasticity (CDP) model was also conducted to simulate the behaviours of CFRP-CFFT UHPFRC members; the corresponding load-axial displacement and load-lateral deflection relationships were numerically generated to compare with the experimental results. FE simulations exhibit a high correlation compared to experimental results, which further highlights the applicability of FE modelling in predicting the structural response of the CFRP-CFTT UHPFRC members. A load-moment ( P - M ) interaction envelope was generated from the FE modelling to facilitate the development of a design guideline of CFRP-CFFT UHPFRC columns subjected to axial load with a varying eccentricity.