TY JOUR TI GLASS FIBER REINFORCED CONCRETE IN THIN-WALLED CONSTRUCTIONS KW glass fiber concrete KW thin-walled structures KW design tasks KW variational principles of structural mechan-ics KW covers KW shallow tunnels JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Panchenko, L.A. AU Erizhokova, E.S. PY 2019 IS 4 PB Belgorod State Technological University named after V.G. Shukhov