An
experimental investigation was conducted to study the seismic behavior of large
scale
circular reinforced
concrete
columns strengthened with carbon fiber
reinforced polymer (CFRP). Results from the experimental program are presented
in which five 360mm diameter and 1000mm long columns were tested under constant
axial load and reversed cyclic lateral load that simulated forces from an
earthquake. Each specimen consisted of a column cast integrally with a
1550mm×600mm×700mm stub that represented a beam-column joint area or a footing.
The results indicate that the failure models of FRP-wrapped
circular RC columns
may be shear failure or flexural failure and the cyclic behavior progressively
improved as the number of CFRP layers increased. New methods for predicting
shear and flexural capacities of FRP-wrapped circular RC columns under seismic
loading were proposed.