Comparison of Experimental values with EC 4, ACI-318, AISCLRFD of Concrete Filled Steel Fluted Columns for Concentric Load

The advantages of Concrete Filled Steel Tube (CFST) columns have proved its usefulness in the structural applications of the constructions. Though, application of CFST columns are gaining popularity, the analysis and design of these have not found a place in the codes of Bureau of Indian Standard Specifications. But, this has been incorporated in the codes of ACI 318. AISC - LRFD and EC 4 - Euro codal provisions. An attempt has been made here to check whether these equations can be made use for the analysis and design of Concrete Filled Steel Fluted Columns (CFSFC) also. It has been observed that by adopting EC 4, (Eurocode 4), for a Triangular Fluted Column (TFC), a discrepancy of about 47 percent has been observed. Whereas , ACI 318 and AISC -LRFD has shown about 48% and 64% respectively less compared to the experimental values. Similar results have been observed for Rectangular Fluted Columns (RFC)