Nonlinear Numerical and Analytical Assessment of the Shear Strength of RC and SFRC Beams Externally Strengthened with CFRP Sheets

This study investigates numerically utilizing nonlinear finite element (ANSYS software) and analytically the shear response of Reinforced Concrete (RC) beams. Different beams are considered in current study, such as RC, steel fibre reinforced concrete (SFRC) without web reinforcement, RC externally zone with carbon polymer (CFRP) sheets. Nonlinear model (FEM) is designed to simulate performance The results FEM compared experimental measurements standard design codes (ACI 440.2R-17, FIB 14, CNR-DT200, ACI 318-19). According approach element, enhancement load carrying capacity SFRC beam due CFRP strengthening decreases a volume fraction fibres 2%. However, effect on behaviour was observed increased ultimate deflection capacities result strengthening. show that has significant contribution strength. At each increment, created accurately reproduced initial progressive crack patterns. A comparison analytical models conducted using 318-19. Numerically, showed high agreement 440.2R-17 code, correlation 99%. shows can be significantly used estimate strength X-Y directions simulating different scenarios characteristics. discrepancy between FEA theoretical predictions from code less than 1%, FIB14 2%, CNR-DT200 15%, 318-19 30%. evaluated based provision good data others’ provision. analysis were results. most advantage over approaches it aid investigation output cannot measured experimentally, stress XY direction throughout strengthened properties (SFRC).