Large-Scale Testing of a Replaceable “Fuse” Steel Coupling Beam
Publication: Journal of Structural Engineering
Volume 133, Issue 12
Abstract
When coupled core wall (CCW) systems are built in regions of high seismicity, the ductility demands on the coupling beams can be of critical concern. Steel coupling beams, whether encased in concrete or not, offer a very high degree of ductility relative to common concrete coupling beams. Hybrid core wall systems, that is CCW systems with steel or steel/concrete composite coupling beams, provide excellent lateral stiffness from the walls and coupling action, while providing excellent energy dissipation and ductility characteristics of steel coupling beams. Previous research pertaining to steel coupling beams has made great strides in furthering the understanding of the behavior of steel coupling beams, and recommendations regarding design methodologies have been established. However, as steel coupling beam ends are embedded in the wall piers, postdamage repair can be costly. This paper presents the results of large-scale cyclic tests of a steel coupling beam designed and detailed based on the writers’ previous recommendations and an innovative “fuse” steel coupling beam which provides an added feature to the steel coupling beam in that postdamage repair/replacement difficulties and expenses are minimized.
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Acknowledgments
The reported research is sponsored by the National Science Foundation under Grant No. NSFBCS-CMS-9714860, with Dr. Shih Chi Liu as the program director. These projects were part of the fifth phase of U.S.–Japan cooperative research program on composite and hybrid structures. Any opinions, findings, and conclusions or recommendations expressed in this paper are of those of the writers and do not necessarily reflect the views of the sponsors.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 12 • December 2007
Pages: 1801 - 1807
Copyright
© 2007 ASCE.
History
Received: Jun 14, 2006
Accepted: Apr 9, 2007
Published online: Dec 1, 2007
Published in print: Dec 2007
Notes
Note. Associate Editor: James S. Davidson
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