Seismic Behavior of Elliptical Concrete-Filled Steel Tubular Columns under Combined Axial Compression and Cyclic Lateral Loading

Elliptical concrete-filled steel tubular (CFST) column is a new form of CFST columns, consisting of an outer elliptical tube filled with concrete. Although the study on mechanical performance of the elliptical CFST members is receiving more and more attention, they have been limited to static behavi...

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Bibliographic Details
Published in:Advances in materials science and engineering 2021, Vol.2021 (1)
Main Authors: Xu, YouWu, Yao, Jian, Hu, Feng, Zhou, Ying, Jiang, Shuai
Format: Article
Language:English
Subjects:
Axial compression
Bearing strength
Concrete columns
Cyclic loads
Design
Energy dissipation
Failure modes
Formability
Hysteresis models
Lateral loads
Load carrying capacity
Mechanical properties
Seismic response
Steel columns
Steel tubes
Stiffness
Stress concentration
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Summary:Elliptical concrete-filled steel tubular (CFST) column is a new form of CFST columns, consisting of an outer elliptical tube filled with concrete. Although the study on mechanical performance of the elliptical CFST members is receiving more and more attention, they have been limited to static behavior. Against this background, an experimental study on elliptical CFST columns was carried out under combined axial compression and cyclic lateral loading. The failure modes, hysteretic curves, skeleton curves, load carrying capacity, deformability, stiffness degradation, and energy dissipation ability was obtained and discussed. The test results indicated that the elliptical CFST columns possess excellent seismic performance and ductility. Valuable experimental data were provided for the formulation of the theoretical hysteresis model of the elliptical CFST columns.
ISSN:1687-8434
1687-8442
DOI:10.1155/2021/5892788