Effect of steel tube thickness on the behaviour of CFST columns: Experimental tests and design assessment

In this paper, the results of experimental tests conducted on concrete-filled steel tubular (CFST) columns are presented. There is currently a deficit data available that can be used to evaluate current guidance documents and provide assessment improve their accuracy when considering behaviour CFST filled with high strength concrete. Thus, paper aims increase volume series groups stub subject axial compression. Among specimens same group only one dimension changes, tube thickness. The both normal concrete for comparison purposes. use in circular tubes increases contribution, but effect does not fulfil rectangular where also confinement less effective than even former have thin specifications four commonly codes discussed. Comparison predictions collected shows AISC conservative EC4, DBJ AS produce similar non-conservative predictions.