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Volume Title: ICASGE2023

DOI: ICASGE-STL

¹Mahmoud Hassan El-Boghdadi ; ²Omnia Kharoop; ³Azza El Agamy; Mahmoud Hassan El-Boghdadi

¹Structural Engineering Department - faculty of Engineering - Tanta University - Egypt

²Department of Structural Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt

³PhD student, Department of Structural Engineering, Faculty of Engineering, Tanta University, Tanta, Egypt

This paper presents experimental and finite element (FE) investigations of hexagonal concrete-filled steel tubular (HCFST) short columns. First, four HCFST short columns are subjected to a uniform axial force. The experiments are carried out to study the effects of concrete strength and cross-section on the behavior and strength of HCFST short columns. Second, the finite element program (ABAQUS) is used for HCFST short columns. The FE is validated using the current experimental testing. Additionally, the FE model is compared to current and previous study results, which show good results in strength and behavior. Then, using a set of parametric studies that take into account concrete strength ( ), steel strength ( ), and thickness of steel cross-section (t), the behavior and strength of HCFST short columns are examined. Results showed that increasing the values of each of (t, and ) increased ultimate load for HCFST slender columns. Lastly, the results of the experimental and FE models are compared using AISC, EN 1994-1-1 (EC4) codes and available design methods. The comparison indicated that the design methods are exceedingly conservative for HCFST short columns.

Hexagonal; concrete; Columns; Strength; Short; Experimental; FE

Steel Structures (STL)