Effective Modeling of Special Steel Moment Frames for the Evaluation of Seismically Induced Floor Accelerations
Publication: Journal of Structural Engineering
Volume 147, Issue 1
Abstract
Nonlinear time-history analysis is becoming a standard procedure for evaluating the seismic performance of structures. The current ASCE 7-16 allows practitioners to perform it when the acceleration demands of nonstructural components (NSCs) are required. However, the code in this version omits any suggestion regarding the methodology that should or could be used to represent the structure as a mathematical model. This investigation evaluated the acceleration demands in rigid and flexible nonstructural components using five different assessment methodologies that vary from a detailed concentrated and distributed plasticity model to a very simple model. Nonlinear static and dynamic analyses were performed on 2-, 4-, 8-, 12- and 20-story special steel moment frames to evaluate the effects that mathematical models have on the structure´s seismic response and acceleration demands on NSCs. Although results showed that detailed models are the only ones that adequately can capture structure drift deformations, it was found that even the simplest nonlinear model evaluated the acceleration demands correctly in NSCs.
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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
Financial support was provided by the University of Cuenca and the University of Azuay. This support is gratefully acknowledged. The authors also acknowledge the contribution of Dr. Fabian Astudillo of the University of Cuenca for his help installing OpenSeesMP on the University of Cuenca’s super-computer.
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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: Jun 21, 2019
Accepted: Jul 13, 2020
Published online: Oct 28, 2020
Published in print: Jan 1, 2021
Discussion open until: Mar 28, 2021
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