Performance of Reinforced Concrete Edge Beam -Column -Slab Connections Subjected to Earthquake Loading
Sin, Myoungsu
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https://hdl.handle.net/2142/83233
Description
Title
Performance of Reinforced Concrete Edge Beam -Column -Slab Connections Subjected to Earthquake Loading
Author(s)
Sin, Myoungsu
Issue Date
2004
Doctoral Committee Chair(s)
LaFave, James M.
Department of Study
Civil and Environmental Engineering
Discipline
Civil and Environmental Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Engineering, Civil
Language
eng
Abstract
"In seismic analysis of MRFs, beam-column connections are often modeled with rigid joint zones. However, it has been demonstrated that, in ductile RCMRFs designed based on current codes (to say nothing of older non-ductile frames), the joint zones are in fact not rigid, but rather undergo significant shear deformations that contribute greatly to global drift. Therefore, the ""rigid joint"" assumption may result in misinterpretation of the global performance characteristics of frames and could consequently lead to miscalculation of strength and ductility demands on constituent frame members. The primary objective of the analytical investigation was to propose a rational method of estimating the hysteretic joint shear behavior of RC connections and of incorporating this behavior into frame analysis. Nonlinear hysteretic joint shear behavior was investigated based on the author's tests and many other laboratory tests reported in the literature. An analytical scheme employing the modified compression field theory (MCFT) was developed to approximate joint shear stress vs. joint shear strain response. A connection model capable of explicitly considering hysteretic joint shear behavior was then formulated for nonlinear structural analysis. The connection model was able to well represent the experimental hysteretic joint shear behavior and overall load-displacement response of the connection subassemblies."
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