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Hysteretic Behavior of Recycled Aggregate Concrete with Ferronickel Slag-Filled Steel Tubular Columns Subjected to Cyclic Loading
https://orcid.org/http://orcid.org/0000-0003-0653-1972
In order to investigate the hysteretic behavior of recycled aggregate concrete with ferronickel slag-filled steel tubular (RAC-FNSFST) columns, the quasi-static loading was implemented on nine specimens with different replacement ratios (RACs), axial load levels, length–diameter ratios, and diameter–thickness ratios. The hysteretic curves, skeleton curves, deformability, energy dissipation capacity, and stiffness degeneration were studied after loading and failure mechanisms were observed, followed by the construction of FE models for parameter analysis. It is demonstrated that the hysteretic loop curve is full, and the hysteretic performance was not dramatically affected by the replacement ratio of RAC. With axial load level increase, ultimate strength at descending stage degrades quickly, stiffness degeneration accelerates, and hysteretic energy dissipation increases. Stiffness degeneration and hysteresis energy dissipation are enhanced as the length–diameter ratio increases. However, when the diameter–thickness ratio decreases, hysteretic energy dissipation increases, and stiffness degeneration accelerates. In addition, a suitable FE model was established and compared with experimental results. Then a wide range of parameter studies was carried out as a supplement to the experimental study. It is shown that the ultimate strength and ductility of specimens are intimately correlated with the RAC strength, yield strength of steel tube, slenderness ratio, axial load level, and steel ratio.
Hysteretic Behavior of Recycled Aggregate Concrete with Ferronickel Slag-Filled Steel Tubular Columns Subjected to Cyclic Loading
https://orcid.org/http://orcid.org/0000-0003-0653-1972
In order to investigate the hysteretic behavior of recycled aggregate concrete with ferronickel slag-filled steel tubular (RAC-FNSFST) columns, the quasi-static loading was implemented on nine specimens with different replacement ratios (RACs), axial load levels, length–diameter ratios, and diameter–thickness ratios. The hysteretic curves, skeleton curves, deformability, energy dissipation capacity, and stiffness degeneration were studied after loading and failure mechanisms were observed, followed by the construction of FE models for parameter analysis. It is demonstrated that the hysteretic loop curve is full, and the hysteretic performance was not dramatically affected by the replacement ratio of RAC. With axial load level increase, ultimate strength at descending stage degrades quickly, stiffness degeneration accelerates, and hysteretic energy dissipation increases. Stiffness degeneration and hysteresis energy dissipation are enhanced as the length–diameter ratio increases. However, when the diameter–thickness ratio decreases, hysteretic energy dissipation increases, and stiffness degeneration accelerates. In addition, a suitable FE model was established and compared with experimental results. Then a wide range of parameter studies was carried out as a supplement to the experimental study. It is shown that the ultimate strength and ductility of specimens are intimately correlated with the RAC strength, yield strength of steel tube, slenderness ratio, axial load level, and steel ratio.
Hysteretic Behavior of Recycled Aggregate Concrete with Ferronickel Slag-Filled Steel Tubular Columns Subjected to Cyclic Loading
https://orcid.org/http://orcid.org/0000-0003-0653-1972
In order to investigate the hysteretic behavior of recycled aggregate concrete with ferronickel slag-filled steel tubular (RAC-FNSFST) columns, the quasi-static loading was implemented on nine specimens with different replacement ratios (RACs), axial load levels, length–diameter ratios, and diameter–thickness ratios. The hysteretic curves, skeleton curves, deformability, energy dissipation capacity, and stiffness degeneration were studied after loading and failure mechanisms were observed, followed by the construction of FE models for parameter analysis. It is demonstrated that the hysteretic loop curve is full, and the hysteretic performance was not dramatically affected by the replacement ratio of RAC. With axial load level increase, ultimate strength at descending stage degrades quickly, stiffness degeneration accelerates, and hysteretic energy dissipation increases. Stiffness degeneration and hysteresis energy dissipation are enhanced as the length–diameter ratio increases. However, when the diameter–thickness ratio decreases, hysteretic energy dissipation increases, and stiffness degeneration accelerates. In addition, a suitable FE model was established and compared with experimental results. Then a wide range of parameter studies was carried out as a supplement to the experimental study. It is shown that the ultimate strength and ductility of specimens are intimately correlated with the RAC strength, yield strength of steel tube, slenderness ratio, axial load level, and steel ratio.
Hysteretic Behavior of Recycled Aggregate Concrete with Ferronickel Slag-Filled Steel Tubular Columns Subjected to Cyclic Loading
Int J Steel Struct
Chen, Huayan (author) / Wang, Fengxuan (author) / Yang, Mianyue (author) / Qi, Ai (author) / Chen, Guochan (author) / Luo, Caisong (author) / Wang, Bizhen (author)
International Journal of Steel Structures ; 23 ; 172-190
2023-02-01
19 pages
Article (Journal)
Electronic Resource
English