EXPERIMENTAL ANALYSIS OF PAC ENCASED COLD FORMED STEEL SECTIONS

Civil Engineering

Cold formed steel is material having high ductility and high strength to weight ratio but when it is subjected to flexural load or high compressive load it gets failed due to local or torsional buckling due to high slenderness ratio and small thickness. This property of CFS section can be improved by encasing these specimens with concrete or some other encasing material. Use of such encased cross section can be possible in precast or cast in-situ primary structural member. Till now many researcher have conducted experimental analysis on concrete in-filled cold formed section but very small research have been made on concrete encased cold formed steel. In this study attempt is made to encase the CFS sections by Polystyrene aggregate concrete and their flexural performance is assessed. Three different fabricated CFS sections were used for the analysis and their flexural performance was assessed by three point bending test. To check the accuracy of experimental approach finite element analysis was also done. The results obtained from both analyses were compared. This comparative study on different cold formed steel sections encased with polystyrene aggregate concrete will give better alternative option in future as flexural member also in earthquake resistant design of building

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