Extended Formulation of Stress Concentration Factors for CFST T-Joints
Publication: Journal of Bridge Engineering
Volume 25, Issue 1
Abstract
In previous research, the authors numerically investigated 212 finite-element (FE) models of concrete-filled steel tubular (CFST) T-joints under axial force in the brace to derive formulae for stress concentration factors (SCFs). The formulations involve four nondimensional parameters: diameter ratio , diameter-to-thickness ratio of chord , thickness ratio , and relative chord length . In the current study, the earlier formulation was extended to include four additional loading conditions: in-plane bending (IPB) in the brace, out-of-plane bending (OPB) in the brace, axial compression in the chord, and IPB in the chord. The validity of the new SCF formulae was demonstrated by comparing the SCFs obtained using the formulae with the results of numerical analysis.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
This research was financially supported by the National Natural Science Foundation of China (No. 51408132) and China Scholarship Council (No. 201506650004).
References
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Published In
Journal of Bridge Engineering
Volume 25 • Issue 1 • January 2020
Copyright
©2019 American Society of Civil Engineers.
History
Received: Dec 13, 2018
Accepted: Jul 9, 2019
Published online: Oct 18, 2019
Published in print: Jan 1, 2020
Discussion open until: Mar 18, 2020
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