FIELD: bridge building. SUBSTANCE: bridge span structure comprises cover plate, movable supporting members, beam structure and prestressed tension bars with supporting devices which hold cover plate to beam structure. Span structure has ties arranged horizontally under beam structure while prestressed tension bars are set at an angle in planes intersecting the planes of main beams of the beam structure, and are connected to ties. Said ties may be made as a rod truss, polygonal closed supporting contour, a system of crisscrossing horizontal braces or horizontal flat members with supporting end projections arranged in planes parallel to axes of main beams. EFFECT: improved design. 5 cl, 8 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| WIDENING STRUCTURE FOR BRIDGE CONSTRUCTION | 1993 |
|
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|
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|
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| BRIDGE SPAN STRUCTURE ERECTION METHOD | 2005 |
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