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A simplified analytical story drift evaluation of steel moment frames with redius-cut reduced beam section

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Authors
Lee, Cheol-Ho; Chung, Samuel W.
Issue Date
2007-04
Publisher
Elsevier
Citation
Journal of Constructional Steel Research 2007;63(4):564-570
Keywords
ConnectionsReduced beam sectionSeismic designSteel moment framesStory drift
Abstract
A simplified analytical procedure is presented to estimate the elastic story drift of steel frames with the radius-cut RBS (reduced beam section) moment connections. Due to the geometric configuration of the radius-cut RBS, the mathematical formulation is complicated when applying the conjugate beam method to compute the component of story drift contributed by the beam. In this study, the problem is circumvented by replacing
the original radius-cut RBS with an equivalent beam of constant width. The equivalence between the two is established by imposing the equal flange elongation criterion over the RBS region. This approach is justified by a finite element analysis. The story drift components contributed by
the column, the panel zone, and the beam are then formulated into a closed form solution for a typical beam–column subassembly. The derived results can readily be used by designers to estimate the magnitude of RBS frame story drift and the effect of the stiffness variations.
ISSN
0143-974X
Language
English
URI
http://hdl.handle.net/10371/8413
DOI
https://doi.org/10.1016/j.jcsr.2006.06.031
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Architecture and Architectural Engineering (건축학과)Journal Papers (저널논문_건축학과)
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