Analytical Model to Capture the In-Plane and Out-of-Plane Seismic Behavior of Nonstructural Partition Walls with Returns
Publication: Journal of Structural Engineering
Volume 143, Issue 6
Abstract
This paper presents an experimentally verified methodology to analytically model the in-plane and out-of-plane seismic behavior of steel-framed gypsum nonstructural partition walls with returns. In this methodology, the steel-framing members are simulated by nonlinear beam elements. The in-plane and out-of-plane nonlinear behaviors of the connections are represented by nonlinear load-deformation springs, which have been calibrated using the component-level experimental data. The representative models of corner connections are assembled accounting for stud configurations, stud-to-stud and gypsum-to-stud screw attachments, and gypsum-to-gypsum contacts. The gypsum boards are simulated using linear four-node shell elements. The proposed methodology is employed to generate analytical models of three configurations of experiments at the University of Buffalo as well as the analytical model of a C-shaped wall system, tested at the University of Nevada, Reno. Comparison of analytical and experimental results shows that the analytical model accurately captures the force-displacement response, the out-of-plane dynamic characteristics, and the out-of-plane responses of nonstructural partition walls. In addition, the model can predict the possible damage mechanisms in partition walls.
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Acknowledgments
The current material is based upon work supported by the National Science Foundation under Grant No. 0721399. This Grand Challenge (GC) project to study the seismic response of nonstructural systems is under the direction of M. Maragakis from the University of Nevada, Reno, and Co-PIs T. Hutchinson (UCSD), A. Filiatrault (UB), S. French (G. Tech), and B. Reitherman (CUREE). Any opinions, findings, conclusions, or recommendations expressed in the current document are those of the investigators and do not necessarily reflect the views of the sponsors. The input provided by the Practice Committee of the NEES Nonstructural Project, composed of W. Holmes (Chair), D. Allen, D. Alvarez, and R. Fleming, and by the Advisory Board, composed of R. Bachman (Chair), S. Eder, R. Kirchner, E. Miranda, W. Petak, S. Rose, and C. Tokas, has been crucial for the completion of this research.
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Information
Published In
Journal of Structural Engineering
Volume 143 • Issue 6 • June 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Nov 6, 2015
Accepted: Dec 7, 2016
Published online: Feb 21, 2017
Published in print: Jun 1, 2017
Discussion open until: Jul 21, 2017
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