Evaluation of FIV3 as an Intensity Measure for Collapse Estimation of Moment-Resisting Frame Buildings
Publication: Journal of Structural Engineering
Volume 146, Issue 10
Abstract
Seismic collapse estimations strongly depend on selecting an intensity measure that minimizes the dispersion in collapse capacities and any possible bias. This study evaluates the recently proposed Filtered Incremental Velocity (FIV3) intensity measure for estimating collapse intensities of moment-resisting-frame buildings and compares its performance with two traditional intensity measures, namely spectral acceleration at the first-mode period of the structure and spectral acceleration combined with an explicit consideration of the spectral shape proxy , and with two advanced intensity measures, namely and . Comparisons are made using collapse results from six special moment frame buildings having 1 to 20 stories. It is shown that for buildings with periods of vibration shorter than 1 s, FIV3 provides the best overall results based on efficiency and sufficiency with respect to magnitude, distance, spectral shape, duration, and scale factor. For buildings with periods longer than 1 s, FIV3 is comparable to and , and clearly outperforms and . Based on these results, a generalization of FIV3 is proposed as an intensity measure for the seismic collapse estimation of moment frame buildings.
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Data Availability Statement
Some or all data, models, or code used during the study were provided by a third party (original OpenSees models). Direct requests for these materials may be made to the provider as indicated in the Acknowledgements. Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
The first author acknowledges financial support from the Consejo Nacional de Ciencia y Tecnología (CONACYT) in Mexico and the John A. Blume fellowship to pursue his doctoral studies at Stanford University under the supervision of the second author. The authors are grateful to government agencies in various countries responsible for installing and maintaining strong motion instrumentation as well as for gathering, processing, and distributing the ground-motion records used in this investigation. The authors are also very grateful to Professor Curt Haselton and to Dr. Laura Eads for sharing their detailed OpenSees structural models, which were used in this study. Finally, the authors would like to acknowledge two anonymous reviewers for their detail review and valuable comments, which helped improve this paper. Initial work on the development and evaluation of FIV3 was done with partial funding from the California Strong Motion Instrumentation Program (CSMIP) of the California Geological Survey. This funding is greatly acknowledged.
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Published In
Journal of Structural Engineering
Volume 146 • Issue 10 • October 2020
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Jul 17, 2019
Accepted: Apr 16, 2020
Published online: Jul 22, 2020
Published in print: Oct 1, 2020
Discussion open until: Dec 22, 2020
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