Date of Publication :7th December 2023

Abstract: In construction industry, builders and engineers are more interested in application cold-formed steel (CFS) sections in place of conventional materials not only as the non-structural components but also the structural members of the commercial and residential buildings. As the structural members, the literatures endorsed that built-up CFS sections have higher strength than single detached sections. The objective of this paper is to analyze the buckling behaviors of CFS built-up box slender columns by means of FE software ANSYS 2020 R1 grounded on the recent experimental models and compares the outputs for design optimization. Face-to-face built-up box slender columns were connected with fillet weld joint spacing of 500 mm and analyzed for Eigenvalue buckling loads. Numerical results by ANSYS 2020 R1 were within the range of allowable compressive loads and global buckling governs for slender columns.

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