Elongation of Reinforced Concrete Members Subjected to Cyclic Loading
Publication: Journal of Structural Engineering
Volume 136, Issue 9
Abstract
Longitudinal elongation develops in reinforced concrete members that exhibit flexural yielding during cyclic loading. The longitudinal elongation can decrease the shear strength and deformation capacity of the members. In the present study, nonlinear truss model analysis was performed to study the elongation mechanism of reinforced concrete beams and the effects of various design variables on the elongation. The results showed that residual tensile plastic strain of the longitudinal reinforcement in the plastic hinge is the primary factor causing the member elongation and that the shear-force transfer mechanism of diagonal concrete struts has a substantial effect on the magnitude of the elongation. Based on the elongation mechanism found by truss model analysis, a simplified method for evaluating member elongation was developed. The proposed method was applied to test specimens with various design parameters and loading conditions.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 136 • Issue 9 • September 2010
Pages: 1044 - 1054
Copyright
© 2010 ASCE.
History
Received: May 19, 2009
Accepted: Feb 3, 2010
Published online: Feb 8, 2010
Published in print: Sep 2010
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