A REVIEW OF DUCTILITY DETERMINATION OF FRP STRENGTHENED FLEXURAL RC ELEMENTS

摘要

A comparative study has been undertaken in order to determine the suitability of existing ductility evaluation methods when applied to RC elements strengthened with Fibre Reinforced Polymers. The comparison will involve considering a number of criteria such as consistency of prediction, volatility of data, ease of application in practical cases and accuracy of prediction. It is shown that the indices calculated for brittle members can have variations when using the existing methods. It is also seen that there is a discernible reduction in deformation based indices in comparison to energy based ones. It is therefore proposed that a revised deformability method is examined, utilising the deformations at serviceability load (P_s) and 95% of ultimate load (P_(0.95u)).