Plastic hinge length of corroded reinforced concrete beams
Journal
ACI Structural Journal
Journal Volume
111
Journal Issue
5
Pages
1049-1058
Date Issued
2014
Author(s)
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.
SDGs
Type
journal article