Effect of boundary condition on the cyclic response of I-shaped steel columns: Two-story subassemblage versus isolated column tests

dc.authorscopusid7403593294
dc.authorscopusid57879016200
dc.authorscopusid57879330100
dc.authorscopusid54415970800
dc.authorscopusid7005974808
dc.authorscopusid6603111196
dc.authorscopusid56872947500
dc.contributor.authorChou, Chung-Che
dc.contributor.authorLai, Yun-Chuan
dc.contributor.authorXiong, Hou-Chun
dc.contributor.authorLin, Te-Hung
dc.contributor.authorUang, Chia-Ming
dc.contributor.authorMosqueda, Gilberto
dc.contributor.authorMcCormick, Jason P.
dc.contributor.authorÖzkula, Gülen
dc.date.accessioned2023-04-20T08:02:26Z
dc.date.available2023-04-20T08:02:26Z
dc.date.issued2022
dc.departmentFakülteler, Çorlu Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü
dc.description.abstractRecent studies on isolated steel columns under combined axial load and cyclic lateral drift showed that the column response is affected by the boundary condition. To consider more realistic boundary conditions of first-story columns in a frame, two-and-a-half story beam-column subassemblages were tested to investigate their behavior under reversed cyclic loading. The subassemblages, composed of a steel column with steel beams at two floor levels, used highly ductile I-shaped sections with web slenderness of either 37 or 49. Two isolated fixed-fixed columns were tested to facilitate a direct comparison with the subassemblage testing. An axial compression force corresponding to 20% of the yield force was applied. Test results showed that the realistic boundary condition at the top end of the first-story column significantly alters the column plastic hinging, moment distribution, and out-of-plane deformation reported previously based on isolated column testing. Plastic hinging of the adjoining beams caused the inflection point of the first-story column to move upward initially, then moved downward when plastic hinging developed at the column base. Out-of-plane deformation observed from isolated columns did not occur in the subassemblage column because hinging did not occur at the top end. Plastic components of the backbone curves for both the subassemblage column and isolated column were very similar; the former delivered a larger story drift angle rotation due to a larger yield rotation, dependent on the elastic lateral stiffness of the column. A closed-form solution that calculates this stiffness for any boundary condition was developed and verified from test results.
dc.description.sponsorshipMinistry of Science and Technology, Taiwan [108-2625-M-002-003]; U.S. Department of Commerce, National Institute of Standards and Technology [70NANB171TZ91]
dc.description.sponsorshipThe cooperative research project among NCREE, National Taiwan University, University of California, San Diego, and University of Michigan, Ann Arbor is supported by the Ministry of Science and Technology (award 108-2625-M-002-003), Taiwan. Additional support is provided by the financial assistance award 70NANB171TZ91 from the U.S. Department of Commerce, National Institute of Standards and Technology. Any opinions, findings, conclusions, and recommendations expressed in this paper are those of the authors and do not necessarily reflect the views of the sponsor.
dc.identifier.doi10.1002/eqe.3730
dc.identifier.endpage3455
dc.identifier.issn0098-8847
dc.identifier.issn1096-9845
dc.identifier.issue14en_US
dc.identifier.scopus2-s2.0-85137511884
dc.identifier.scopusqualityQ1
dc.identifier.startpage3434
dc.identifier.urihttps://doi.org/10.1002/eqe.3730
dc.identifier.urihttps://hdl.handle.net/20.500.11776/10922
dc.identifier.volume51
dc.identifier.wosWOS:000852549600001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorGülen, Özkula
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofEarthquake Engineering & Structural Dynamics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBoundary Condition
dc.subjectBuckling
dc.subjectCyclic Test
dc.subjectI-Shaped Column
dc.subjectInflection Point
dc.subjectTwo-Story Subassemblage Frame
dc.subjectBehavior
dc.titleEffect of boundary condition on the cyclic response of I-shaped steel columns: Two-story subassemblage versus isolated column tests
dc.typeArticle

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