Abstract
Composite columns offers many structural benefits and widely used in civil engineering structures. CFDST consist of inner and outer steel tubes, and concrete sandwiched in between tubes. The steel tubes and concrete work together well and integrity of steel concrete interface is maintained. Steel tubes in inner and outer can acts as permanent formwork and primary reinforcement. Steel tubes provides a confinement effect to concrete and in turn concrete prevents the inward buckling of tubes. As there is deteriorations due to ageing and corrosion strengthening techniques are used. Strengthening can be done by using fibre reinforced polymer (FRP) as an external reinforcement. This paper aims to study about the load carrying capacity of fibre reinforced CFDST columns under axial load using ANSYS 16.2 (Workbench) software. The modeling of CFDST columns were studied with variation in angle (40°, 45°, 50°, 60°), material change and thickness change of FRP sheets.
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