TY JOUR TI CALCULATION OF STRESS-STRAIN STATE (SSS) FOR FRAME ASSEMBLIES OF BUILDING METAL STRUCTURES WHEN THEY ARE REINFORCED KW metal structures KW frame assemblies KW durability KW multi-cycle fatigue KW residual welding stresses KW reinforcements JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Al' Sabaei, A.K. AU Absimetov, V.E. PY 2024 IS 9 PB Belgorod State Technological University named after V.G. Shukhov