DEVICE FOR BRIDGE SPAN STRUCTURE PROTRUSION Russian patent published in 2007 - IPC E01D21/06 

FIELD: methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections.

SUBSTANCE: device comprises building berth for bridge span structure sections assemblage, pushing means, fixed protruding means and side movement limiting means cooperating with lower sheet of main span structure beams. Main beam defining radius curve in plane is supported by fixed protruding means. Movable protruding means, which may be displaced in transversal direction, are installed on bridge piers in area of another main beam supporting, wherein the main beam has curvilinear section defined in plane, which differs from above radius curve. The movable protruding means are made as transversal bearing beams with guiding means adapted to receive movable support section bearing ball support section. The ball support section carries sleeve bearing cooperating with lower sheet of main beam. The sleeve bearing is made as tangential support section resting upon ball support section and having upper balancer. Connected to upper balancer is frame having longitudinal beams made as balancing beams. Transversal beams of the frame are provided with side thrusts formed on cantilever parts thereof to cooperate with lower sheet of main span structure beam.

EFFECT: possibility to protrude span structures having varying curvature in plane and different main beams axes spacing.

2 cl, 5 dwg