BUILT-UP BRIDGE BEAM AND BRIDGE ROAD Russian patent published in 1997 - IPC

FIELD: bridge building, can be used instead of built-up monolithic ribbed bridge beams with longitudinal division in bridges with spans up to 33 m and in other bridge frameworks with spans up to 63 m. SUBSTANCE: bridge framework with a reinforced-concrete orthotropic slab of the bridge rood uses thin vaults installed on the main girders in a spaced relation to one another and pavement of hydrophobic polymerfibrous concrete with ribs enveloping the thin vaults; the thin vaults and pavement are made for joint operation relative to each other and main girders with realization of the arch effect within each thin vault. The bridge road is made with a trough-shaped footpath combined with a wheel-impingement wall and stiffening ribs corresponding to the gaps between the adjacent thin vaults of the bridge road slab; the footpath is inclined towards the bridge wheel-impingement wall between the footpath blocks for run-off of liquid. EFFECT: enhanced adaptability to manufacture and standardized members of bridge framework. 6 cl, 10 dwg