BEAM SPAN OF BRIDGE Russian patent published in 2011 - IPC E01D2/00 

FIELD: construction.

SUBSTANCE: invention refers to construction and can be used to erect motor road and pedestrian bridges, overhead bridges, galleries and similar structures. Beam span of bridge comprises laminated ribs, joined prefabricated slab of roadway and cross membranes installed between ribs. Span is made of at least two enlarged prefabricated units joined with the help of devices providing for joint operation of units and possibility to even level of boards location. In each unit ribs are joined to board with the help of discretely arranged links formed by steel rods glued into ribs on top at the angle to each other with joined upper ends installed in openings-seats arranged in board, and built into them by means of polymer concrete. Device for connection of units is formed by transverse stiffening element installed with the help of pair tractions rods along bottom of ribs along membranes with cantilever ledge, being the support for joined neighbouring unit. Tractions are pulled through openings arranged in boards of joined units and in transverse rigid element, and are equipped with nuts with washers at the ends, fixing transverse rigid element to the top of joined boards.

EFFECT: reduction of labour expenses in erection of prefabricated structure of span.

6 dwg