Experimental Hysteretic Behavior and Application of an Assembled Self-Centering Buckling-Restrained Brace
Publication: Journal of Structural Engineering
Volume 148, Issue 3
Abstract
In this paper, we propose an assembled self-centering buckling-restrained brace (ASCBRB), which eliminates the residual drift of structures after a major horizontal displacement. The ASCBRB also represents an advanced device for partial replacement of damaged parts of a brace. Four groups of prestressed disk springs and a metal yielding core plate were used to improve the resilience and energy dissipation of the brace, respectively. The hysteretic mechanics of the self-centering system was summarized and experimentally determined through a cyclic quasi-static experiment on four specimens with different energy-dissipation ratios. The ASCBRBs were experimentally verified to exhibit superior self-centering capacity and flag-shaped hysteretic behavior. Moreover, the damage concentrated on the core and guide plates demonstrated the feasibility of partial replacement. Nonlinear dynamic analyses of the seismic performance of the ASCBRB frame provided evidence that the proposed device significantly reduces residual drift compared with buckling-restrained braced frames having the same design parameters.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This project was financially supported by the National Natural Science Foundation of China (Grant Nos. 51638012 and 52078459) and the National Key R&D Program of China (Grant No. 2019YFE0112600).
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Journal of Structural Engineering
Volume 148 • Issue 3 • March 2022
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This work is made available under the terms of the Creative Commons Attribution 4.0 International license, https://creativecommons.org/licenses/by/4.0/.
History
Received: Nov 6, 2020
Accepted: Nov 1, 2021
Published online: Dec 29, 2021
Published in print: Mar 1, 2022
Discussion open until: May 29, 2022
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