DEVICE TO ELIMINATE FLEXURE OF BRIDGE SPAN STRUCTURE CANTILEVER IN THE CASE OF CANTILEVERED BUILDING SPAN ASSEMBLAGE Russian patent published in 2007 - IPC E01D21/00 

FIELD: bridge construction, particularly methods or apparatus specially adapted for erecting or assembling bridges.

SUBSTANCE: bridge span structure comprises thrust cantilever beams fastened to end part thereof and support perforated posts secured to thrust cantilever beams. The support perforated posts are provided with fixers and transversal tie members. Jack screw beams and power jacks are arranged on support. Thrust cantilever beams are provided with anchors located in central part thereof and connected to upper span structure belt joints and with transversal beam pivotally connected to upper ends of support perforated posts. Support has bearing hinges adapted to support jack screw beams with jacks and comprises over-jack beams connected to power jack rods. The over-jack beams have support bails adapted to receive support perforated post fixers. Jack screw beams and over-jack beams have orifices aligned with support perforated posts perforations. Fixers made as guiding and sliding fingers are inserted in the orifices and perforations.

EFFECT: decreased weight and size, increased assembling ability.

2 cl, 2 dwg