SPAN STRUCTURE HINGED JOINT Russian patent published in 2024 - IPC E01D19/00 E01D15/14 

FIELD: floating bridges.

SUBSTANCE: invention relates to floating bridges, in particular to design of collapsible span structures. Span structure hinged joint comprises a power bracket including an incoming part and an enclosing part, each of which is formed by a pair of parts, the incoming and enclosing parts are connected to each other by means of a fixing axis, wherein incoming part is rigidly connected with one span structure while enclosing part is connected with another span structure. In the enclosing part of the power bracket there is a through longitudinal cutout, the fixing axis is located in the longitudinal cutout, and the connection is made with the possibility of changing the distance between the incoming and enclosing parts of the power bracket in the longitudinal direction of the cut and limiting the angular movement of the parts relative to the fixing axis. Incoming part of the power bracket is equipped with at least one guide plate located along the cutout, and the enclosing part of the power bracket is equipped with at least one pressure plate with a longitudinal slot. Through hole is made in the guide plate and the pressure plate, in which the fixing axis is located. Guide plates are located on opposite sides of the incoming part, and the pressure plates are on the inner surfaces of the enclosing part. Incoming and enclosing parts of the power bracket are made with a lower belt in the form of a horizontal sheet, which is attached to the lower belt of the span structure through a horizontal overlay and bolted through the matching groups of holes. Vertical wall of the enclosing part of the power bracket on the outer side of the wall is equipped with at least one stiffening rib. Each pair of incoming and enclosing parts of the power bracket is connected to each other by a stiffening beam. Span structure hinged joint length is varied by means of tension screw. Stiffening beams pass through each incoming and enclosing parts of the power bracket, along the outer vertical wall on the outer side of the power bracket parts there are attached consoles with support of the sidewalk flooring and the guard rail fixed on the railing posts. There is one tension screw on each of the power bracket consoles. In the sidewalk flooring there are longitudinal cuts for the supports of the power bracket. Lower belt of the load-bearing bracket does not extend beyond the butt end of the hinged joint at connection with the bridge span structure.

EFFECT: bridge span structure hinge joint design is proposed.

1 cl, 2 dwg