TY JOUR TI The Performance of the Span Main Beam Made of Thin-Walled Steel Sections Subjected to Pedestrian Load KW Cold-formed thin-walled steel profile KW LTSS (Lightweight Thin-Walled Steel Structure) KW Vlasov theory KW theory of supercritical bearing capacity KW buckling KW local stability KW pedestrian overpass KW metal bridge JO Proceedings of Petersburg Transport University AU Chizhov, S.V. AU Solov'ev, N.A. AU Avdey, Y.V. PY 2025 IS 22 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"