Behavior of reinforced concrete hollow circular columns with steel fiber inclusion under cyclic bending

الملخص EN

Experimental results on the test of 12 hollow circular reinforced columns with steel fiber matrix of 1200mm long with 208mm outer diameter and 80 mm inner diameter are presented.

The experimental and analytical study were carried out to establish the influence of variables on the mechanism of confinement provided by lateral hoop reinforcement.

The test results showed a direct relationship between absorbed energy and the spacing of lateral reinforcement.

The addition of steel fibers with Vf = 1 % (for the fiber type used) to a hollow circular RC columns enhances the ductility with an increment of (40 to 60) %, allowing these columns to absorb an energy of about (40-50 (% greater than that needed to deform a similar columns made of ordinary reinforced concrete to the same load level.