Abstract
This paper presents the seismic performance of two types of cold-formed steel wall systems as characterized during a full-scale five-story building shake table test program: (1) an exterior architectural façade, which spanned the lower three levels of the building, and (2) interior partition wall systems distributed at all levels of the building. The test building was subjected to a suite of earthquake input motions of increasing intensity, first while the building was isolated at its base, and subsequently while it was fixed to the shake table platen. This paper presents the observed physical and measured responses for the two cold-formed steel wall systems and in particular associates physical damage states with measured drift demands in the building. The tests illustrate damage mechanisms for cold-formed steel wall systems when used in architectural façades and highlights areas that should be given particular consideration during seismic design.
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Acknowledgments
This project is a collaboration between four academic institutions (University of California, San Diego, San Diego State University, Howard University, and Worcester Polytechnic Institute), four government or other granting agencies (the National Science Foundation, the Englekirk Advisory Board, the Charles Pankow Foundation, and the California Seismic Safety Commission), over 40 industry partners, and two oversight committees. Through the NSF-NEESR program, partial funding is provided by grant number CMMI-0936505. Support is also provided by NEES@UCSD and NEES@UCLA staff, Robert Bachman, Dr. Robert Englekirk, Mahmoud Faghihi, Prof. Claudia Marin, and Prof. Ken Walsh. This work would not be possible without the many hours of dedicated graduate student contributions, in particular, Consuelo Aranda, Rodrigo Astroza, Michelle Chen, Hamed Ebrahimian, Elias Espino, Giovanni De Francesco, Jin-Kyung Kim, Steven Mintz (deceased), Hae-Jun Park, and Francesco Selva. Specific to the cold-formed steel wall systems discussed in this paper, support is provided by California Expanded Metal Products Co. (CEMCO), CSI Commercial Scaffolding, Hilti Corporation, Regal Industries, Inc., Southwest Regional Council of Carpenters, Sure-Board, and USG Corporation. The above continuous support is gratefully acknowledged. Opinions and findings of this study are of the authors and do not necessarily reflect those of the sponsors.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 10 • October 2015
Copyright
© 2015 American Society of Civil Engineers.
History
Received: May 5, 2014
Accepted: Dec 9, 2014
Published online: Feb 6, 2015
Discussion open until: Jul 6, 2015
Published in print: Oct 1, 2015
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