FIELD: building, particularly metal bridge span structures for constructing elevated roads, foot-bridges or galleries.
SUBSTANCE: spanning structure includes curved main girder provided with longitudinal stiffening booms and transversal reinforcement members of curvilinear shape located at axes of bridge bearing on piers. Spanning structure also has flooring for payload passing and protective translucent coating. Main girder is U-shaped and formed of metal sheet having transversal membranes connected to its inner surface and spaced predetermined intervals one from another. Transversal membranes have horizontal areas formed in central parts thereof. Above bridge flooring is laid on horizontal areas. Bridge flooring is made of steel plates reinforced by stiffening ribs. Connected to upper free ends of metal sheet are longitudinal stiffening booms having units for protective translucent coating connection. Transversal reinforcing members are made as reinforcing beams connected to metal sheet from its outside and to longitudinal stiffening boom.
EFFECT: improved efficiency and increased service life.
2 cl, 3 dwg
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