ARCH BRIDGE Russian patent published in 1996 - IPC

FIELD: bridge building. SUBSTANCE: arch bridge includes superstructure of a bridge in the form of pneumatic shell with flexible lower chord, stiff butts and corrugations facing shell inside, lateral walls and lengthwise bulkheads, monolithic reinforced concrete slab of roadway. The bulkheads rest on lower flexible chord. Method of arch bridge erection includes supplying the superstructure of the bridge by water to the place of installation. Installation and securing the bridge are carried out when the bridge is in design position by supplying compressed air into the shell and securing it to the upper chord with filling its corrugates. EFFECT: high reliability. 1 cl, 3 dwg