A Study on Effective Strains in Different FRP Shear Strengthening Schemes for Analytical Optimized Truss Models

This paper presents an optimized truss model based on the principle of minimum total energy theorem. Six most recent effective strain ɛ_frp,e models including three design guidelines were selected for the analysis. Three reinforced concrete beams strengthened with different fiber reinforced polymer (FRP) schemes were chosen. Comparing with current design guidelines, the results of these three beams indicate that the optimized model is promising and encouraging.