Current design practice of concrete-filled steel tube (CFST) columns uses different formulas for different section profiles to predict the axial load bearing capacity. It has always been a challenge and practically important issue for researchers and design engineers who want to find a unified formula that can be used in the design of the columns with various sections, including solid, hollow, ...

cast connections. ABSTRACT: Diagonal bracings are extremely popular elements for lateral load resistance in steel-framed buildings. In turn, the most common shape used for bracing members is the hollow structural section. While the design of such members is straight-forward, the design of gusset-plate connections at the member ends is controversial. This paper reviews the current ‘state-of-the-...

Different types of structural analyses, first order elastic, second order elastic, first order plastic, and plastic zone analysis, were used to simulate the behaviour of 3 portal frames constructed from cold-formed rectangular hollow sections. All analyses underestimated the magnitude of the deflections of the frame mainly due to the non-inclusion of flexible joint behaviour. A second order ine...

Within the research framework for updating international design standard ISO 14346 hollow section joints, this study examines brace failure and chord sidewall in full-width rectangular (RHS) X T joints under axial tension, in-plane bending out-of-plane bending. The codified rules RHS are reviewed, with their limitations highlighted. Design resistance equations failure, based on modified effecti...

Numerical investigation of cold-formed stainless steel beam–columns at elevated temperatures ranged from 24–960 °C has been performed. The beam–column specimens were subjected to axial compression and minor axis bending. A finite element model was developed validated against available experimental results ambient temperature. An extensive parametric study with 308 lean duplex, austenitic duplex...

The influence of yield strength on the in-plane stability and design structural steel square rectangular hollow section (SHS RHS) beam-columns under compression plus uniform bending is investigated in this study. Ten buckling tests were carried out hot-finished S690 SHS 100×100×4 (in mm) specimens combined uniaxial bending. Finite element (FE) models RHS established, validated employed to perfo...