Numerical Analysis of Cold-Formed Built-Up Battened Steel Columns Under Eccentric Compressive Loading

Authors

mai mohamed sheta, Department of construction and building Engineering, Higher Institute for Engineering, 6th of October City, EgyptFollow
Hanan Hussein Eltobgy, Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, EgyptFollow
Mohamed Massoud El Saadawy, Housing and Building National Research Center (HBRC),87El Tahrir St., Dokki, Giza11511, POBox1770, Cairo, EgyptFollow
Khaled abdallah Gharib, Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, EgyptFollow

DOI

https://doi.org/10.70259/engJER.2025.911910

Abstract

This paper presents a 3D finite element model simulation using ABAQUS finite element software to investigate the behavior of steel battened beam columns under uniaxial loads. The columns consist of double-channel cold-formed slender open sections. The study highlighted the effects of various factors on the ultimate capacity of these beam-column members.

By considering both global and local imperfections, the model focuses on the structural strength and performance of battened cold-formed steel columns made from built-up sections. These cold-formed steel (CFS) columns have a slenderness ratio ranging from 50 to 162. Axial loads are applied at the pin-ended support of the column, which comprises two cold-formed steel open-channel sections positioned at varying center-to-center distances.

To validate the finite element models, their results were compared with relevant experimental data from the literature on similar geometries. The finite element analysis accounted for various factors, including different geometrical properties of column sections, slenderness ratios, nonlinear material properties of cold-formed steel sections, built-up section components, and initial geometric imperfections.

Finally, the analysis results were compared to the predicted ultimate strengths according to both the North American Specification and European codes EC3. The findings show that the strength of battened columns is strongly influenced by the interaction of several factors, including the back-to-back distance of the two channels, depth-to-width ratios, number of battened, and overall column slenderness ratios.

Recommended Citation

sheta, mai mohamed; Eltobgy, Hanan Hussein; El Saadawy, Mohamed Massoud; and Gharib, Khaled abdallah () "Numerical Analysis of Cold-Formed Built-Up Battened Steel Columns Under Eccentric Compressive Loading," Journal of Engineering Research: Vol. 9: Iss. 1, Article 19.
DOI: https://doi.org/10.70259/engJER.2025.911910
Available at: https://digitalcommons.aaru.edu.jo/erjeng/vol9/iss1/19