TY JOUR TI NUMERICAL MODELS FOR SHEAR BEHAVIOR OF REINFORCED CONCRETE BEAMS WITH FRP STIRRUPS KW reinforced concrete beams KW FRP reinforcement KW nonlinear analysis KW shear JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Tamov, M.M. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov