TY JOUR TI EXPERIMENTAL STUDY OF THE WALL OF A ROLLED I-beam UNDER LOCAL LOAD KW concentrated load KW local stresses KW stress-strain state of the wall KW steel I-beam KW bending element JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Vodyahin, N.V. AU Ryabokon', I.R. AU Senkevich, A.D. AU Obernikhina, Y.L. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov