TY JOUR TI PRELIMINARY DESCRIPTION OF THE WORK OF REINFORCED CONCRETE ELEMENTS WITH EXTERNAL REINFORCEMENT WITH COMPOSITE MATERIALS DURING BENDING WITH TORSION KW reinforced concrete structures with external composite reinforcement KW torsion resistance with bending KW strength calculation KW complex stress–strain state KW spatial crack JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Merkulov, S.I. AU Esipov, S.M. AU Kashuba, S.O. PY 2022 IS 7 PB Belgorod State Technological University named after V.G. Shukhov