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Cyclic behavior of concrete‐encased high‐strength concrete‐filled steel tube composite walls: An experiment
Author(s) -
Zhou Jing,
Fang Xiaodan,
Jiang Yi
Publication year - 2021
Publication title -
structural concrete
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.912
H-Index - 34
eISSN - 1751-7648
pISSN - 1464-4177
DOI - 10.1002/suco.201900233
Subject(s) - materials science , ductility (earth science) , dissipation , bearing capacity , composite number , stiffness , shear wall , composite material , structural engineering , hysteresis , engineering , creep , physics , quantum mechanics , thermodynamics
Concrete‐encased high‐strength concrete‐filled steel tube (CFST) walls are a new type of composite shear wall embedded into high‐strength CFST columns as a boundary element and/or in the centre of a wall. To examine the cyclic behavior of the concrete‐encased CFST composite wall, ten wall specimens were designed, and tested under lateral cyclic loading. The performance parameters of each specimen, including the failure pattern, hysteresis characteristics, load‐bearing capacity, ductility, stiffness, and energy dissipation capacity were studied. The experimental results demonstrated that the concrete‐encased CFST walls have a high initial stiffness and load‐bearing capacity. The degradation of the load‐bearing capacity and stiffness is slow, the ductility of the composite wall is excellent, and the hysteresis curve of the wall is complete under cyclic loading, which indicates a good cyclic behavior. The specimens maintain a good ductility and energy dissipation capacity, even at a high axial compression ratio. The CFST columns embedded in the centre of a wall enhance the load‐bearing capacity and change the distribution and propagation direction of cracks.