Study on Loading Behaviour of Corrugated Web Steel Column Using Finite Element Analysis

Abstract

This paper presents the study on the loading behaviour of the corrugated-web I-section column using a finite element model. Firstly, the finite element models were validated against the experimental and numerical results of flat-web I-section column from the reference journal. Secondly, the finite element models of corrugated-web I-section column were created and compared with the results of flat-web I-section column. Then parametric studies were performed to investigate the influence of different proportions of the section on the buckling behaviour and the ultimate load capacity. It was found that in the column that bending about major axis; the buckling mechanism of corrugated-web I-section columns are controlled by the flexural buckling until after the ultimate load, local buckling of the flanges will occur and the ultimate load capacity of flat-web I-section columns are higher than corrugated-web I-section columns, in the column that bending about minor axis; the buckling mechanism of corrugated-web I-section columns are still controlled by the flexural buckling and the ultimate load capacity of flat-web I-section columns are slightly higher than corrugated-web I-section columns. In parametric studies, it was found that in the columns under the effect of lateral torsional buckling; the ultimate load capacity of corrugated-web I-section columns can be higher than flat-web I-section columns in some cases.