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Axial compression behaviors of steel shear-keyed tubular columns: Numerical and analytical studies

Khan, K., Chen, Z., Liu, J. , Tsavdaridis, K. D. ORCID: 0000-0001-8349-3979 & Poologanathan, K. (2023). Axial compression behaviors of steel shear-keyed tubular columns: Numerical and analytical studies. Journal of Constructional Steel Research, 205, 107894. doi: 10.1016/j.jcsr.2023.107894


This study developed a finite element model (FEM) and reported parametric and analytical studies on the axial compression behaviors of shear-keyed tubular columns in modular steel structures (MSS). The accuracy of the developed FEM was validated using 36 tests in references. The parametric study designed 108 FEMs to investigate initial imperfection, shear-key height (Lt), thickness (tt), steel tube length (D), width (B), thickness (tc), and height (Lc) influence. The typical load-shortening response showed elastic, inelastic, and recession stages, with failure modes of inward and outward sinusoidal pairs of local buckling. Increasing tt, Lt, tc, D, or B improved strength and stiffness, while Lc or slenderness (Lc/r) adversely affected the stiffness and ductility linearly. Besides, it ensured by validations that prediction equations in conventional design standards overestimated the compressive resistance, requiring modifications.

Publication Type: Article
Additional Information: © 2023. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Publisher Keywords: Axial compression behaviors, Steel shear-keyed tubes, Finite element modeling, Experimental validations, Prediction equations
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TH Building construction
Departments: School of Science & Technology > Engineering
[thumbnail of Manuscript-R3.pdf] Text - Accepted Version
This document is not freely accessible until 17 March 2024 due to copyright restrictions.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

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