Rotation-Based Shear Failure Model for Lightly Confined RC Columns
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Volume 138, Issue 10
Abstract
A shear failure model for nonductile RC columns that sustain flexural yielding prior to shear failure is proposed. The model, which relates shear failure to column end rotation, was derived by performing a forward stepwise linear regression on a database compiled from column tests. Critical parameters that affect rotation capacity at shear failure were found to be axial load, spacing (rather than amount) of transverse reinforcements, and nominal shear stress. The model is suitable for use in nonlinear frame analyses using either a lumped-plasticity or fiber-section column idealization. The model also can be used to determine rotation limits for performance-based assessment of existing buildings.
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Published In
Journal of Structural Engineering
Volume 138 • Issue 10 • October 2012
Pages: 1267 - 1278
Copyright
© 2012 American Society of Civil Engineers.
History
Received: May 26, 2011
Accepted: Dec 16, 2011
Published online: Dec 21, 2011
Published in print: Oct 1, 2012
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