Seismic Behavior of 3D Joint between Concrete Encased Steel Cross-Shaped Column and Steel Beam: Experimental Study
Publication: Journal of Structural Engineering
Volume 148, Issue 12
Abstract
This paper presents an experimental study on the seismic performance of a three-dimensional (3D) joint between concrete encased steel cross-shaped (CESC) columns and steel beams. Cyclic loading test of five interior joints was performed to investigate failure modes, hysteretic behavior and strain distribution. Steel configuration, load ratio, and loading angle were considered. Seismic performance was evaluated based on peak load, stiffness degradation, energy dissipation, and ductility factor for these joints. The test results indicated that the seismic performance of joints with solid-web steel is much better than that of joints with T- and U-shaped steel trusses. The ultimate drift ratio of all joints was larger than the minimum limit of 1/50 in American and Chinese standards. The strain results showed that the influence of loading angle on the shear capacity of 3D joints cannot be ignored. Ultimately, because of the rhombic coordinate relationship between shear strength and loading angle, the formulas established in this paper can be adopted to assess the shear capacity of 3D joints between CESC columns and steel beams.
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Data Availability Statement
Some or all of the data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This research was sponsored by the National Natural Science Foundation of China through Grant Nos. 51578163 and 52220105005, the Bagui Scholars Special Funding Project through Grant No. 79-2019, and the Guangxi Science and Technology Base and Talent Special Project through Grant No. AD21075031. It was also partially supported by the Projects Funded by the Central Government to Guide Local Scientific and Technological Development (Grant No. ZY21195010) and the Innovation Project of Guangxi Graduate Education (Grant No. YCBZ2021020). The financial support is highly appreciated.
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Published In
Journal of Structural Engineering
Volume 148 • Issue 12 • December 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Mar 7, 2022
Accepted: Aug 12, 2022
Published online: Oct 10, 2022
Published in print: Dec 1, 2022
Discussion open until: Mar 10, 2023
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