Title: Plastic Hinge Length of Corroded Reinforced Concrete Beams

Author(s): Yu-Chen Ou and Nguyen Dang Nguyen

Publication: Structural Journal

Volume: 111

Issue: 5

Appears on pages(s): 1049-1058

Keywords: beams; corrosion; finite element analysis; plastic hinge length; reinforced concrete

DOI: 10.14359/51687026

Date: 9/1/2014

Abstract:
Existing plastic hinge length formulations for reinforced concrete members do not consider the effect of steel reinforcement corrosion. This study investigated the effect of reinforcement corrosion on the plastic hinge length Lp of reinforced concrete beams. A nonlinear finite element analysis method was developed, and verified by experimental results of corroded reinforced concrete beams. A parametric study was then conducted to examine the influences of concrete compressive strength, the longitudinal tension reinforcement ratio, shear span, and corrosion level on the Lp of reinforced concrete beams. Study results indicate the Lp is not strongly correlated with concrete compressive strength or the longitudinal tension reinforcement ratio, but it is positively correlated with shear span for both uncorroded and corroded beams. Moreover, the Lp decreases as corrosion increases, which has a strong correlation with the reduction of the flexural-strength hardening ratio caused by corrosion.