Research on seismic performance of prefabricated concrete-filled steel tubular frame joints
International Journal of Structural Integrity
ISSN: 1757-9864
Article publication date: 9 November 2021
Issue publication date: 9 March 2022
Abstract
Purpose
Concrete-filled steel tube structures are widely used for their high bearing capacity, good plasticity, good fire resistance and optimal seismic performance. In order to give full play to the advantages of concrete-filled steel tube, this paper proposes a prefabricated concrete-filled steel tube frame joint.
Design/methodology/approach
The concrete-filled steel tube column and beam are connected by high-strength bolted end-plate, and the steel bars in the concrete beam are welded vertically with the end-plates through the enlarged pier head. In addition, the finite element software ABAQUS is used numerically to study the seismic performance of the structure.
Findings
The ductility coefficient of the joint is in 1.72–6.82, and greater than 2.26 as a whole. The equivalent viscous damping coefficient of the joint is 0.13–3.03, indicating that the structure has good energy dissipation capacity.
Originality/value
The structure is convenient for construction and overcomes the shortcomings of the previous on-site welding and on-site concrete pouring. The high-strength bolted end-plate connection can effectively transfer the load, and each component can give play to its material characteristics.
Keywords
Acknowledgements
This research was supported by the Department of Science and Technology of Henan Province through Grant No. 212102310971. The financial support is highly appreciated.
Citation
Li, S., Zhao, D. and Zhou, Y. (2022), "Research on seismic performance of prefabricated concrete-filled steel tubular frame joints", International Journal of Structural Integrity, Vol. 13 No. 2, pp. 327-347. https://doi.org/10.1108/IJSI-08-2021-0087
Publisher
:Emerald Publishing Limited
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