Nonprismatic Beam Element for Beams with RBS Connections in Steel Moment Frames
Publication: Journal of Structural Engineering
Volume 133, Issue 2
Abstract
This paper presents the development of a nonprismatic beam element for modeling the elastic behavior of steel beams with reduced beam section (RBS) connections. The accuracy of this element is evaluated by comparisons with finite element solutions. A simplified approach is also suggested, which uses a prismatic beam element to model beams with RBS connections. The effect of the RBS on the elastic stiffness of beams and frames is then investigated through a series of parametric studies, and by analysis of 3-, 9-, and 20-story moment frames. With a 50% flange reduction, the increase in maximum story drift ranges from 6 to 8% for typical moment frame buildings. With a 40% reduction, the increase in maximum story drift is 4.5–6%.
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References
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 133 • Issue 2 • February 2007
Pages: 176 - 184
Copyright
© 2007 ASCE.
History
Received: Aug 31, 2005
Accepted: Apr 10, 2006
Published online: Feb 1, 2007
Published in print: Feb 2007
Notes
Note. Associate Editor: James S. Davidson
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