Study on the behavior of concrete-filled square double-skin steel tubular stub columns under axial loading
FX Ding, WJ Wang, DR Lu, XM Liu
Structures | Elsevier Inc. | Published : 2020
This paper presents a numerical, experimental, and theoretical study on the behavior of concrete-filled square double-skin steel tubular (CFDST) stub columns under axial compressive loading. Firstly, three-dimensional solid model of CFDST stub columns was established by ABAQUS finite element software and verified through the existing experimental results. Then a full-scale model was established to investigate the influence of various parameters on ultimate bearing capacity and internal and external compressive stress of concrete. By considering the confinement coefficient, the practical calculation formula for the bearing capacity of CFDST stub columns was proposed. Finally, the experimental..View full abstract
Awarded by National Natural Science Foundation of China
Awarded by National Key Research Program of China
Awarded by Science Fund for Distinguished Young Scholars in Hunan Province
This research was financially supported by the National Natural Science Foundation of China (Grant No. 51578548), the National Key Research Program of China (Grant No. 2017YFC0703404), and Science Fund for Distinguished Young Scholars in Hunan Province (Grant No. 2019JJ20029).