TY - JOUR
T1 - Finite element simulation of circular short CFDST columns under axial compression
AU - Elchalakani, M.
AU - Patel, V. I.
AU - Karrech, A.
AU - Hassanein, M. F.
AU - Fawzia, S.
AU - Yang, B.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - Circular concrete-filled double-skin tubular (CFDST) columns increase considerably the displacement ductility and peak strength of the sandwiched concrete due to the confinement provided by the steel tubes. This study describes the characteristics of short CFDST columns under compression and investigates the influences of the sandwiched concrete thickness, the yield stress of outer tube, tube thickness of the both outer and inner components and sandwiched concrete strength on the structural performance of circular short CFDST columns. To obtain the structural behaviour of circular CFDST columns, a finite element analysis is conducted. In this numerical modelling, the choice of the concrete and steel material properties is essential. Accordingly, different steel and concrete models are adapted from previous researches, and then they are verified by comparing their results with the experimental results. The best material models are presented and used in the parametric study which aims at examining the effects of several factors on the load-displacement relationships of the CFDST columns.
AB - Circular concrete-filled double-skin tubular (CFDST) columns increase considerably the displacement ductility and peak strength of the sandwiched concrete due to the confinement provided by the steel tubes. This study describes the characteristics of short CFDST columns under compression and investigates the influences of the sandwiched concrete thickness, the yield stress of outer tube, tube thickness of the both outer and inner components and sandwiched concrete strength on the structural performance of circular short CFDST columns. To obtain the structural behaviour of circular CFDST columns, a finite element analysis is conducted. In this numerical modelling, the choice of the concrete and steel material properties is essential. Accordingly, different steel and concrete models are adapted from previous researches, and then they are verified by comparing their results with the experimental results. The best material models are presented and used in the parametric study which aims at examining the effects of several factors on the load-displacement relationships of the CFDST columns.
KW - Concentric load
KW - Concrete-filled double-skin
KW - Nonlinear inelastic analysis
KW - Peak strength. Sandwiched concrete
UR - http://www.scopus.com/inward/record.url?scp=85068127925&partnerID=8YFLogxK
U2 - 10.1016/j.istruc.2019.06.004
DO - 10.1016/j.istruc.2019.06.004
M3 - Article
AN - SCOPUS:85068127925
SN - 2352-0124
VL - 20
SP - 607
EP - 619
JO - Structures
JF - Structures
ER -