Partial confinement of exterior reinforced concrete columns

Abstract EN

This paper presents a program to examine partial confinement of reinforced concrete columns, as an effective and a practical solution to strengthen exterior columns in existing buildings.

The effect of confinement area, number of outer stirrups, reinforcement ratio of the column, partially penetrative dowels and fully penetrative dowels on the behavior of reinforced concrete exterior reinforced concrete columns were studied.

Experimental and analytical programs (using ABAQUS software) of two groups were performed.

Horizontal displacement and strains were measured at different stages of loading.

The load strains curves were plotted.

The relation between each variable and the capacity of the column was plotted.

The final results show that the partially penetrative dowels are more effective than the fully penetrative dowels.

The rare faction in the concrete particles in case of fully penetrative dowels caused reduction in failure load in comparison with the expected failure load.