Probabilistic Evaluation of Self-Centering Birocking Walls Subjected to Far-Field and Near-Field Ground Motions
Publication: Journal of Structural Engineering
Volume 148, Issue 9
Abstract
This paper aims to investigate the seismic behavior of buildings equipped with self-centering birocking walls to find out the optimum location of the rocking section in the height. For this purpose, several two-dimensional nonlinear time-history analyses were carried out on different birocking structures of 4, 8, 12, 16, and 20 stories subjected to three sets of ground motions. The ground motions comprised 22 far-field (FF), 14 near-field pulse (NF-pulse), and 14 near-field nonpulse (NF-nonpulse) ground motions. The simulations have been performed utilizing the open source finite-element framework OpenSees. In this study, the first rocking section of a birocking wall was at the base and the second was considered at three different locations: one-quarter (R2-J1), half (R2-J2), and three-quarters (R2-J3) of the wall height. The seismic vulnerability of the models were statistically assessed. To determine the optimum design, a utility coefficient was defined as the average of shear and moment reduction coefficients. The results showed that R2-J2 walls are effective under FF and NF-nonpulse records, while R2-J1 walls show their best performance under NF-pulse records.
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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
The researchers would like to express tremendous appreciation to the Iranian National Science Foundation (INSF) for its financial support.
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Published In
Journal of Structural Engineering
Volume 148 • Issue 9 • September 2022
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Sep 2, 2021
Accepted: Apr 18, 2022
Published online: Jul 8, 2022
Published in print: Sep 1, 2022
Discussion open until: Dec 8, 2022
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