Field Testing of All-Steel Buckling-Restrained Braces Applied to a Damaged Reinforced Concrete Building
Publication: Journal of Structural Engineering
Volume 141, Issue 1
Abstract
This paper reports the results of full-scale inelastic cyclic static tests of all-steel dismountable buckling restrained braces (BRBs) applied to an existing damaged reinforced concrete (RC) building. The two concepts set as the design targets for the prototype BRBs were to minimize interference with the functions and aesthetics of the existing building and to use an all-steel dismountable solution to allow for inspection of the yielding core after earthquakes. Two masonry infill panels (typical in RC buildings) were used to hide the braces and satisfy the first objective. Specially designed steel built-up shapes with bolted connections were used to satisfy the second objective. The design criteria and procedure adopted for the retrofitting design are first described, and a description of the BRB specimens and the experimental results follows.
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Acknowledgments
The authors gratefully acknowledge the financial support obtained from the following grants: (1) Italian Civil Protection: first ReLUIS Project—Task 5 “Development of Innovative Approaches to Designing Steel and Composite Steel-Concrete Structures.” (2) Italian Ministry for Education, University and Research (MIUR): PRIN 2005–2007 project “Innovative Techniques and Strategies for Seismic Upgrading of Existing RC Structures.” (3) European Commission: PROHITECH project “Earthquake Protection of Historical Buildings by Reversible Mixed Technologies.” Prof. F. M. Mazzolani was the coordinator of the first and third research projects. His support in the development of this research is gratefully acknowledged.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 1 • January 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: May 1, 2013
Accepted: Mar 20, 2014
Published online: Jul 11, 2014
Discussion open until: Dec 11, 2014
Published in print: Jan 1, 2015
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