Testing and numerical simulation of concrete-filled 6061-T6 aluminum tubular stub columns

Jiang, Mengyao; Shu, Qianjin; Liu, Peixiang; Wang, Fangying; Zhu, Mingquan; Wang, Wei

Abstract

In this study, the axial compressive behaviour and design of circular and square concrete-filled 6061-T6 aluminum tubular (CFAT) stub columns were examined. The failure modes of the specimens and the relationship between load and axial displacement were reported. The test results demonstrate that, in comparison to square aluminum outer tubes, circular tubes can offer a better restraining effect on the core concrete. The failure modes of circular CFAT specimens were directly linked to the diameter-thick ratio. For circular CFAT specimens, shear damage of concrete was observed for specimens with the diameter-thick ratio (D/t) of 53.3, accompanied by local buckling and longitudinal tearing of the aluminum tube. The failure mode for circular specimens with the D/t of 16 was an overall waist drum deformation followed by an interior concrete crushing failure. For square CFAT specimens, the failure mode was generally local buckling exhibited by corner buckling and rip of the aluminum tube, and cracking and crushing of the concrete infill. Finally, a comparative analysis of the applicability of existing design approaches for determining the load-bearing capacity of concrete-filled steel tubular columns to CFAT columns was conducted.

Citation

Jiang, M., Shu, Q., Liu, P., Wang, F., Zhu, M., & Wang, W. (2024). Testing and numerical simulation of concrete-filled 6061-T6 aluminum tubular stub columns. Structures, 60, Article 105855. https://doi.org/10.1016/j.istruc.2024.105855

• Journal Article Type: Article
• Acceptance Date: Jan 3, 2024
• Online Publication Date: Jan 25, 2024
• Publication Date: 2024-02
• Deposit Date: Mar 7, 2024
• Publicly Available Date: Jan 26, 2025
• Journal: Structures
• Electronic ISSN: 2352-0124
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 60
• Article Number: 105855
• DOI: https://doi.org/10.1016/j.istruc.2024.105855
• Keywords: Aluminum tube; Concrete-filled aluminum tube (CFAT); Compressive behavior Stub column; Testing; 6061-T6
• Public URL: https://nottingham-repository.worktribe.com/output/30411846
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S2352012424000079?via%3Dihub