The Comparative Study of Biaxial Bending Analysis of Steel Sections Using AISC and Eurocode Approaches

  • Mohammed M. Saleh University of Calabria-Italy
  • Dlshad K. Ahmed Department of Civil Engineering, Cihan University-Erbil, Kurdistan Region, Iraq
  • Ali R. Yousef Department of Civil Engineering, Engineering Collage, Salahaddin University, Erbil, Iraq
Keywords: Steel Sections, Biaxial bending analysis, AiSC specification, Eurocode, Fisher's concept



This study investigates the capacity of the steel section using both AISC and Eurocode approaches by Robot Structure Analysis software. Three types of steel sections were subject to biaxial bending by applying loads to both main axes and examined by both approaches. The concept of Fisher was also adopted as an approach. The findings suggested that the Eurocode approach is more conservative in the design of steel sections subject to biaxial bending as it takes into account the level at which the load is applied, the type of the section whether rolled or welded and its height-to-width ratio (lateral buckling effect), the effects which are not considered in AISC approach. The AISC approach considers the shear center of the section as the level at which the loads are applied. The conservatism of the results was more pronounced when the section is close to H-section. Fisher`s concept of structural design of biaxial bending of structural steel is more conservative than both AISC and Eurocode approaches of analysis.


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A. Ansi. AISC 360-16, Specification for Structural Steel Buildings, 2016.

A. Aghayere and J. Vigil. Structural Steel Design: Pearson India, 2008.

N. Boissonnade, R. Greiner, J. P. Jaspart and J. Lindner. Rules for Member Stability in EN 1993-1-1: Background Documentation and Design Guidelines, 2006.

L. Laim, J. P. C. Rodrigues and L. S. da Silva. Experimental and numerical analysis on the structural behavior of cold-formed steel beams. Thin Walled Structures, vol. 72, pp. 1-13, 2013.

M. Fisher. Steel Design Guide 7: Industrial Buildings, Roofs to Anchor Rods. Chicago, IL: American Institute of Steel Construction, 2005.

Y. L. Pi and N. S. Trahair. Inelastic torsion of steel I-beams. Journal of Structural Engineering, vol. 121, pp. 609-620, 1995.

A. Engineers. Minimum Design Loads for Buildings and Other Structures, Standard Asce/Sei 7-10. Reston, VA: American Society of Civil Engineers, 2013.

M. Velikovic, L. S. da Silva, R. Simões, F. Wald, J. P. Jaspart, K. Weynand. Eurocodes: Background and Applications Design of Steel Buildings Worked Examples, Joint Research Center, 2015.

How to Cite
Saleh M, Ahmed D, Yousef A. The Comparative Study of Biaxial Bending Analysis of Steel Sections Using AISC and Eurocode Approaches. cuesj [Internet]. 30Dec.2020 [cited 8May2021];4(2):25-2. Available from:
Research Article