%0 Conference Paper
%A Teo, W.
%A Yin, H.
%D 2014
%F scholars:4467
%I International Institute for FRP in Construction (IIFC)
%K Design; Engineering research; Reinforced concrete; Shear strength; Trusses, Coefficient of variation; Effective strain; Experimental test; Experimental values; Externally bonded; Good correlations; Research studies; Shear strengthening, Shear flow
%T Optimized effective strain model for externally bonded FRP shear strengthened RC members
%U https://khub.utp.edu.my/scholars/4467/
%X Discrepancies in the current design guidelines on externally bonded FRP shear strengthening for reinforced concrete (RC) structures had initiated this research study. It is generally believed that the erroneous and irrelevant effective FRP strain models adopted in many of the design guidelines, which are derived entirely based on the 45-deg truss analogy, contributes significantly for such discrepancies. Previous research work by the authors had revealed the successful use of truss model optimization to generate a realistic and viable model, and furthermore accurately evaluate the shear strength of FRP strengthened members. The objective of this research is intended to develop a new effective FRP strain model based on this optimized truss model. The model is derived by calibration with the experimental test data collected from existing published literature. The results obtained show a very good correlation between predicted and experimental values. An average shear strength ratio (Vn,exp/Vn,pre) of 1.09 with coefficient of variation (COV) of 14.1 was obtained. The performance of this new optimized effective strain model is very promising and indeed could potentially be recommended into the current design guidelines.
%Z cited By 1; Conference of 7th International Conference on FRP Composites in Civil Engineering, CICE 2014 ; Conference Date: 20 August 2014 Through 22 August 2014; Conference Code:110944