Analytical calculation on shear capacity of RC columns internally confined with CFRP strips

Abstract

In the present work, behaviour of reinforced concrete columns transversely confined with carbon fibre reinforced polymer (CFRP) strips has been investigated. Focus was given on shear capacity provided by CFRP strips in the RC columns using analytical approach. The analytical calculation showed good correlation with results obtained from numerical analyses. Results from analytical calculations indicate increases in shear capacity when distance between the FRP strips reduced from 200mm to 150mm and 100mm by 33.4% and 83.4%. Furthermore, when the number of plies increased from single to two and three plies of FRP strips, shear capacity in RC column increases by 99.6% and 149.7%, respectively.