TY - JOUR
T1 - Composite frame of circular CFST column to steel-concrete composite beam under lateral cyclic loading
AU - Ding, Fa xing
AU - Yin, Guo an
AU - Jiang, Li zhong
AU - Bai, Yu
PY - 2018/1/1
Y1 - 2018/1/1
N2 - In this paper we investigate the performance of composite frames composed of circular concrete-filled steel tubular (CFST) columns connected to steel-concrete composite beams subjected to a constant axial load and a cyclic lateral load. Seven single-story and single-bay in-plane frames were fabricated and tested. The effects of the slenderness ratio (λ), the axial compression ratio (n), and the beam-to-column linear stiffness ratio (k) on the seismic performance of the composite frame were studied. The experimental results, including damage development and stiffness degradation, load-deformation responses, energy dissipation capacity and ductility are discussed. It was found that these composite frames exhibited satisfactory seismic performance. Furthermore, a finite element (FE) model was developed and validated by comparisons with the experimental results, considering both material and geometrical nonlinearity for confined concrete and steel. The results obtained from the FE modeling were in good agreement with the experimental results in terms of failure modes, load-displacement hysteretic curves, and skeleton curves.
AB - In this paper we investigate the performance of composite frames composed of circular concrete-filled steel tubular (CFST) columns connected to steel-concrete composite beams subjected to a constant axial load and a cyclic lateral load. Seven single-story and single-bay in-plane frames were fabricated and tested. The effects of the slenderness ratio (λ), the axial compression ratio (n), and the beam-to-column linear stiffness ratio (k) on the seismic performance of the composite frame were studied. The experimental results, including damage development and stiffness degradation, load-deformation responses, energy dissipation capacity and ductility are discussed. It was found that these composite frames exhibited satisfactory seismic performance. Furthermore, a finite element (FE) model was developed and validated by comparisons with the experimental results, considering both material and geometrical nonlinearity for confined concrete and steel. The results obtained from the FE modeling were in good agreement with the experimental results in terms of failure modes, load-displacement hysteretic curves, and skeleton curves.
KW - Composite frames
KW - Concrete-filled steel tubular (CFST) column
KW - Experimentation
KW - Finite element (FE) model
KW - Seismic behavior
UR - http://www.scopus.com/inward/record.url?scp=85031751229&partnerID=8YFLogxK
U2 - 10.1016/j.tws.2017.10.022
DO - 10.1016/j.tws.2017.10.022
M3 - Article
AN - SCOPUS:85031751229
SN - 0263-8231
VL - 122
SP - 137
EP - 146
JO - Thin-Walled Structures
JF - Thin-Walled Structures
ER -