Evaluation of seismic response factors for BRBFs using FEMA P695 methodology

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dc.contributor.authorÖzkılıç Y.O.
dc.contributor.authorBozkurt M.B.
dc.contributor.authorTopkaya C.
dc.date.accessioned2024-07-22T08:09:23Z
dc.date.available2024-07-22T08:09:23Z
dc.date.issued2018
dc.description.abstractThis paper reports the details of a numerical study undertaken to evaluate seismic response factors for steel buckling-restrained braced frames (BRBFs) using the FEMA P695 methodology. In the United States, BRBFs are designed according to Minimum Design Loads for Buildings and Other Structures (ASCE 7) and the Seismic Provisions for Structural Steel Buildings (AISC 341). Twenty-four archetypes were designed according to the U.S. specifications and their behavior was assessed by making use of non-simulated collapse models. The interstory drift, brace axial strain and cumulative brace axial strain demands under collapse level ground motions were determined. The results obtained indicate that the current seismic response factors are adequate in terms of interstory drift and cumulative axial strain demands. On the other hand, large differences between the design level and collapse level axial strains were reported, which can result in undesirable brace behavior. Modified approaches were developed to estimate the axial strains for collapse level ground motions. These include a modification to the deflection amplification factor and a modification to the AISC 341 requirements for expected brace deformations. The archetypes were redesigned using the proposed modifications and reevaluated using the FEMA P695 methodology. The results indicate that the proposed modifications result in axial strain demands that are in close agreement with the calculated demands. © 2018 Elsevier Ltd
dc.identifier.DOI-ID10.1016/j.jcsr.2018.09.015
dc.identifier.issn0143974X
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/14792
dc.language.isoEnglish
dc.publisherElsevier Ltd
dc.subjectBuilding materials
dc.subjectSeismic design
dc.subjectSeismic response
dc.subjectSteel
dc.subjectStrain
dc.subjectAmplification factors
dc.subjectBuckling restrained braced frames
dc.subjectBuckling restrained braces
dc.subjectInterstory drifts
dc.subjectResponse factor
dc.subjectSeismic
dc.subjectStructural steel buildings
dc.subjectYielding
dc.subjectStructural frames
dc.titleEvaluation of seismic response factors for BRBFs using FEMA P695 methodology
dc.typeArticle

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