Tests on Concrete-Filled Stainless Steel Tubular T-joints

This paper by R Feng and B Young was published in the Journal of Constructional Steel Research, Volume 64 Issue 11, November 2008. It describes a test programme on a range of concrete filled cold formed stainless steel tubular T-joints fabricated from SHS ands RHS brace and chord members. 27 tests were performed using duplex and austenitic stainless steel. An axial compression force was applied via a steel bearing plate to the top end of the brace member, which was welded to the centre of the chord member. The failure mode of the chord members face and side panels were observed. It is concluded that the design strengths predicted by the current design are quite conservative. Therefore it is recommended that the stainless steel tube contribution be included in the design rules as it has significant effect on the ultimate bearing capacity of the considered sections.