TY - JOUR
T1 - Axial compression behaviors of steel shear-keyed tubular columns
T2 - Numerical and analytical studies
AU - Khan, Kashan
AU - Chen, Zhihua
AU - Liu, Jiadi
AU - Tsavdaridis, Konstantinos Daniel
AU - Poologanathan, Keerthan
N1 - Funding information: The authors gratefully acknowledge financial support from the National Natural Science Foundation of China (Grant Nos. 51978457 and 52008292 ) and the China Scholarship Council . The authors appreciate the editors' and reviewers' efforts in providing valuable recommendations that helped us improve the quality of the manuscript.
PY - 2023/6/1
Y1 - 2023/6/1
N2 - 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.
AB - 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.
KW - Axial compression behaviors
KW - Experimental validations
KW - Finite element modeling
KW - Prediction equations
KW - Steel shear-keyed tubes
UR - https://www.scopus.com/pages/publications/85150260996
U2 - 10.1016/j.jcsr.2023.107894
DO - 10.1016/j.jcsr.2023.107894
M3 - Article
AN - SCOPUS:85150260996
SN - 0143-974X
VL - 205
JO - Journal of Constructional Steel Research
JF - Journal of Constructional Steel Research
M1 - 107894
ER -