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http://dx.doi.org/10.5000/EESK.2012.16.6.021

Experimental Evalutation of the Seismic Performance of WUF-W Moment Connections with a Modified Access Hole  

Han, Sang Whan (Architectural Engineering, Hanyang University)
Jung, Jin (Architectural Engineering, Hanyang University)
Moon, Ki-Hoon (Architectural Engineering, Hanyang University)
Kim, Jin Won (Steel Structure Research Division, RIST)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.16, no.6, 2012 , pp. 21-28 More about this Journal
Abstract
Welded Unreinforced Flange-Welded Web (WUF-W) connection is one of Special Moment Frame (SMF) specified in ANSI/AISC-358. From the experimental test of WUF-W connection specimens conducted by the previous study, fracture occurred in the beam flange before achieving total inter-story drift angle of 0.04radian required for Special Moment Frames (SMF) system even though the specimens satisfied the design and detailing requirement specified in ANSI/AISC-358. These results are estimated as problem of the access hole geometry. In this study, a full-scale WUF-W connection specimen was made with a modified access hole geometry, and tested with the same test setting and loading as the previous test. From test results, the deformation capacity of the tested WUF-W connection specimen exceeded 4%, which is required for connections in SMF system. Comparing with the WUF-W specimens of the previous study, the strain demand of the beam flange in the tested specimen was decreased and energy dissipation capacity of the specimen was improved.
Keywords
Steel Moment Frame; Connections; Cyclic Test; Plastic Rotation; Weld Access hole;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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