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Keywords
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all-steel buckling restrained brace, interface detail, local buckling behavior, finite element analysis, cyclic loading
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Abstract
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This study presents the finite element analysis results of the proposed all-steel buckling restrained brace (BRB) models. The
objective of the analysis is to conduct a parametric study to investigate the effect of interface detail of BRBs on local buckling
behavior of the core plate. Moreover, the effects of magnitude of friction coefficient (μ) between the core and the buckling
restraining mechanism (BRM) contact, the size of gap between the core and the BRM, and the unbonding material thickness
on local buckling behavior of core plate in BRBs are investigated through the finite element analysis method. Based on the
results, the interface configuration, the magnitude of friction coefficient at the interface, and the size of gap could significantly
affect the local buckling behavior of core plate in all-steel BRBs. However, the thickness change in unbonding material was
not found to considerably affect the overall response of BRBs. Finally, an appropriate interface detail in BRBs was suggested
for design purposes based on the finite element analyses results.
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