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Inelastic Time History Analysis of a Five-Story Steel Framed Structure Considering Rigidity of TSD Connection  

Kang, Suk-Bong (울산대학교 건축학부)
Lee, Jae-Hwan (울산대학교 대학원 건축학과)
Publication Information
Journal of Korean Society of Steel Construction / v.22, no.3, 2010 , pp. 281-291 More about this Journal
Abstract
In this study, a five-story steel frame was designed in accordance with KBC2005 to evaluate the effects of the beam-column connection on the structural behavior. The connections were designed as fully rigid and semi-rigid. The fiber model was used to describe the moment-curvature relationship of the steel beam and the column, the power model for the moment-rotation angle of the semi-rigid connection and the three-parameter model for the hysteretic behavior of the steel beam, column, and connection. The structure was idealized as separate 2-D frames and as connected 2-D frames. The peak ground accelerations of four earthquake records were modified in a time-history analysis for the levels of the mean return period and for the maximum base-shear force in a pushover analysis. The top story displacement, base-shear force, story drift, demanded ductility ratio for the semi-rigid connection, maximum bending moment of the column, beam, and connection, and distribution of the plastic hinge were examined in the time-history analysis. The frame with the semi-rigid connection yielded a lower base-shear force, less magnitude, and increasing ratio in the bending moment of the column, beam, and connection than the frame with a fully rigid connection. The TSD connection was deemed to have secured the economy and safety of the sample structure that was subjected to seismic excitation for the Korean design level.
Keywords
semi-rigid; steel frame; 3-parameter model; story-drift; plastic hinge; pushover analysis; time history analysis;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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