Journal
ENGINEERING STRUCTURES
Volume 44, Issue -, Pages 304-311Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.engstruct.2012.05.026
Keywords
Steel structures; Seismic; Buckling restrained brace; Local buckling failure
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Funding
- Nippon Steel Engineering Co., Ltd.
- University of Illinois at Urbana-Champaign
- Grants-in-Aid for Scientific Research [24760448] Funding Source: KAKEN
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Buckling-Restrained Braces (BRBs) are commonly used as ductile bracing elements in seismic zones. Key limit states governing BRB design include preventing both flexural buckling and local buckling failures. In this study, the authors propose a strategy for the prevention of in-plane local buckling failure of a BRB whose restrainer is composed of a mortar in-filled circular or rectangular steel tube with various mortar thicknesses. Cyclic loading tests on BRBs possessing various mortar restrainers and circular tube thicknesses were carried out to investigate the effect of the mortar and the sectional shape of the restraint tube on the local buckling failure of buckling-restrained braces. (C) 2012 Elsevier Ltd. All rights reserved.
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