A Generalized Approach to Estimating the Out-of-plane Buckling of Steel Sections with a Triangularly Corrugated Web

Abstract

Building practice shows that I-sections consist of flanges and corrugated web could be quite effectively used for the construction of compressed structures. In the present work, an investigation into the behaviour and design of steel bending and compressed members with the triangularly corrugated web is carried out. Based on the result of the finite element analysis (FEA) conducted by the ABAQUS an attempt is made to generalize approaches in the evaluation of the stability of such structures. The necessity for this work is since, in the most building codes and studies, the issues of the global buckling of such structures are considered separately for beam structures and for structures at central and eccentrical compression. Most of the building codes do not provide any recommendations and requirements for the design of compression members with corrugated webs at all and only consider the case of bending. It is shown that beam and column structures with triangularly corrugated web works almost identically in case of out-of-plane buckling. Finally, is proposed an expression allow to calculate the critical force in flanges of the cross-section in case of out of plane buckling caused by transverse bending, axial of eccentrical compression uniformly, that could be useful for practical structural design.