ABSTRACT
This paper aims to analyze the residual bearing capacity of the corroded reinforced concrete (RC) columns with annular cross sections to provide useful information for maintenance and repair. The materials and structural strength degradation models are constructed by investigating the deterioration mechanism of the corroded structures. Based on these deterioration models, the analytical models are presented to evaluate the residual bearing capacity of the corrosion-damaged annular columns. Then, the moment-axial force (M-N) interaction diagram is plotted to analyze the influences of various corrosion levels and different loading conditions on the residual bearing capacity of the corroded columns. Finally, a numerical example is applied to verify the effectiveness of the presented method. The obtained results conclude that the proposed approach can be used to quantitively analyze the bearing capacity of the corroded annular RC columns, which grows as the compression zone area develops but decreases as the rebar corrosion level increases.
