STEEL CONSTRUCTION ENGINEERING
Online ISSN : 1884-0329
Print ISSN : 1880-9928
ISSN-L : 1880-9928
PERFORMANCE EVALUATION OF BUCKLING-RESTRAINED BRACES INSTALLED IN A MID-RISE STEEL STRUCTURE
Ryohei NARUI, Kazuhisa KOYANO, Mitsumasa MIDORIKAWA, Tadao NAKAGOMI, Mamoru IWATA
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Keywords: Buckling-restrained braces, Performance evaluation, Mid-rise steel structure, Cumulative plastic strain energy ratio, Cumulative fatigue
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2017 Volume 24 Issue 95 Pages 95_41-95_48

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Abstract

Our past studies have revealed only the structural performance of the buckling-restrained brace (BRBSM) members. It is necessary to study BRBSMs in a structure.

In this paper, a model of a mid-rise steel structure with BRBSMs is analyzed. Evaluated are cumulative plastic strain energy ratios and cumulative fatigue values of BRBSMs. As a result, cumulative plastic strain energy ratios and cumulative fatigue values exceed required values to BRBSMs under a severe earthquake. BRBSM of developed high-performance type is applicable against so many repeated loadings of low strain amplitude.

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© 2017 Japanese Society of Steel Construction
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