TY JOUR TI NUMERICAL RESEARCH OF STEEL BEAMS WITH STRENGTHENING BY SPRENGEL SYSTEM ON PART OF HER SPAN KW strengthening of steel beams KW truss system KW strengthening of the part on a span JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Repin, V.. AU Roschina, S.. AU Maksimenko, M.. AU Sadovnikov, Y.. PY 2016 IS 1 PB Belgorod State Technological University named after V.G. Shukhov