Title:
Nonlinear Shear Analysis of Corroded Reinforced Concrete Beams Considering Bond Mechanism
Author(s):
Wei Zhang, Deuckhang Lee, Ogwu Ikechukwu, and Okonkwo Moses
Publication:
Structural Journal
Volume:
118
Issue:
6
Appears on pages(s):
47-61
Keywords:
bond; corrosion; failure mode; finite element analysis (FEA); shear
DOI:
10.14359/51732996
Date:
11/1/2021
Abstract:
A new modeling approach for estimating the shear behaviors of reinforced concrete (RC) beams with corroded longitudinal reinforcements is presented. The corrosion effects on the constitutive models of materials subjected to multi-axial stresses are clarified, including the bond mechanism between the reinforcement
and surrounding concrete, which is a critical factor. The material models were implemented in a nonlinear finite element analysis (FEA) platform, and an experimental program is introduced to verify the analysis results. It appeared that the shear response of RC members can be greatly influenced by the corrosion of longitudinal reinforcements and anchorage conditions, and the failure modes can be changed from the diagonal shear-tension to the bond-critical mechanisms. The proposed approach captured such unique behavioral characteristics of RC members with corroded longitudinal reinforcement.
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