Experimental and Numerical Investigations of Octagonal High-Strength Steel Tubular Stub Columns under Combined Compression and Bending
Publication: Journal of Structural Engineering
Volume 147, Issue 1
Abstract
An experimental and numerical study on the octagonal high-strength steel tubular stub columns under combined compression and bending is presented in this paper. Octagonal high-strength steel tubular stub column specimens with different sizes were prepared. Experiments were performed on these specimens under concentric compression or eccentric compression, which induced various combinations of compression and bending on the structures. In addition, a numerical study through finite-element modeling was also conducted. A finite-element model was developed and validated to be capable of accurately replicating the experimental results. Subsequent parametric studies using the validated model were performed on the structures with a wide range of dimensions and under various combinations of compression and bending. Based on both experimental and parametric studies results, the applicability of existing design approaches in European and American Standards to the structures subject to combined compression and bending was evaluated. The evaluation results show that the design approaches from the standards, especially the compression and bending interaction relationship, provide conservative strength predictions and can be safely applied to the structures.
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Data Availability Statement
Some or all data, models, or codes that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research work presented in this paper was supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. PolyU 152189/18E). The authors also appreciate the support from the Chinese National Engineering Research Centre for Steel Construction (Hong Kong Branch) at The Hong Kong Polytechnic University.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 1 • January 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Nov 19, 2019
Accepted: Jul 6, 2020
Published online: Oct 16, 2020
Published in print: Jan 1, 2021
Discussion open until: Mar 16, 2021
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