Cyclic Behavior of Electroslag Welded Joints in Beam-to-Built-Up Box Column Steel Moment Connections

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dc.authorscopusid56872947500
dc.authorscopusid55879898900
dc.authorscopusid24522826500
dc.authorscopusid7005974808
dc.contributor.authorÖzkula, Gülen
dc.contributor.authorGarai, Rupa
dc.contributor.authorLee, Peter
dc.contributor.authorUang, Chia Ming
dc.date.accessioned2022-05-11T14:03:06Z
dc.date.available2022-05-11T14:03:06Z
dc.date.issued2019
dc.departmentFakülteler, Çorlu Mühendislik Fakültesi, İnşaat Mühendisliği Bölümü
dc.description.abstractSteel special moment frames (SMFs) with built-up box columns are often used in taller buildings when two orthogonal axes of participating moment frames intersect. Interior diaphragm (or continuity) plates are usually required to strengthen the column at the beam flanges. A common US practice is to use the electroslag weld (ESW) process to provide complete-joint-penetration (CJP) groove welds connecting the plates to the blindside of the box column after it has been welded closed. Available research in Asia has shown that ESW joints used in this application are vulnerable to brittle fracture. Limited research and guidelines are available in US seismic design codes. The design standard for prequalified connections is primarily developed for SMF connections with wide-flange columns in strong-axis bending. To address the use of large box columns in SMFs with reduced beam section (RBS) connections, a test program with three full-scale specimens was conducted; the depth of the column section also exceeded the prequalification limit. Test results showed that the quality of ESW and SMF joint detailing was crucial for the integrity of the connections. Modifications to ESW detailing and welding process included the use of beveled containment plates intended to delay crack development that might initiate from a notch-like condition inside the flange of the box column. SMF detailing recommendations include an enlarged weld access hole geometry and steel backing treatment of the beam top flange. © 2019 American Society of Civil Engineers.
dc.description.sponsorshipThe test program was sponsored by Judicial Council of California (JCC). The authors are grateful to Dr. Ker-Chun Lin at the National Center for Research on Earthquake Engineering in Taiwan for sharing a patented detail for ESW welding that is commonly used for ESW welding in Taiwan, and to Arcmatic Welding for sharing their development of narrow-gap electroslag welding. Professor Kenneth Vecchio, Department of Nanoengineering, University of California San Diego, assisted in characterizing the mechanical properties of the welded joints.
dc.identifier.doi10.1061/(ASCE)ST.1943-541X.0002409
dc.identifier.issn0733-9445
dc.identifier.issue12en_US
dc.identifier.scopus2-s2.0-85072514072
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1061/(ASCE)ST.1943-541X.0002409
dc.identifier.urihttps://hdl.handle.net/20.500.11776/4604
dc.identifier.volume145
dc.identifier.wosWOS:000490245600027
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorÖzkula, Gülen
dc.language.isoen
dc.publisherAmerican Society of Civil Engineers (ASCE)
dc.relation.ispartofJournal of Structural Engineering (United States)
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectBox column
dc.subjectDiaphragm plate
dc.subjectElectroslag welding
dc.subjectReduced beam section
dc.subjectSpecial moment frame
dc.subjectSteel moment connection
dc.subjectConcrete beams and girders
dc.subjectDiaphragms
dc.subjectElectroslag welding
dc.subjectFlanges
dc.subjectSeismic design
dc.subjectSoftware testing
dc.subjectWelded steel structures
dc.subjectBox columns
dc.subjectDiaphragm plate
dc.subjectReduced beam section
dc.subjectSpecial moment frames
dc.subjectSteel moment connection
dc.subjectWelds
dc.titleCyclic Behavior of Electroslag Welded Joints in Beam-to-Built-Up Box Column Steel Moment Connections
dc.typeArticle

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