STEEL BRIDGE GIRDER WITH JOINTLESS TRACK Russian patent published in 1997 - IPC

FIELD: bridge building. SUBSTANCE: steel bridge girder with jointless track has two interconnected main trusses, bridge road made in the form of longitudinal girders laid on transverse girders with joints of the truss rigid chord, and a railway track. The longitudinal girders of the steel bridge riding part are made as simply supported girders laid on the transverse girders through movable and fixed supporting parts providing for opposite direction of temperature strains of longitudinal girders of the riding part and truss chords of the bridge. EFFECT: reduced longitudinal stresses in jointless track rails on the bridge arising due to joint operation of the bridge and rails at fluctuations of ambient air temperature due to the use of simply supported girders of the riding part laid on the transverse girders through supporting parts. 2 dwg