EXPANSION BRIDGE JOINT Russian patent published in 2017 - IPC E01D19/06 

FIELD: construction.

SUBSTANCE: expansion bridge joint includes mating ends of the roadway of the bridge framework arranged with a gap relative to each other, a metal base plate jumping the gap, water proofing, crushed-rock mastic filling of the cut slots of asphalt coat of the bridge roadway, drainage elements outside the crushed-rock mastic filling. At least one of the mating edges of the roadway slabs in the bridge framework at its face end in the gap and along the lower edge is provided with an insert, mainly shaped as an angle, which the metal base plate is welded to through its one end. Its other end is pressed against the lower edge of the roadway slabs of the adjacent bridge framework and can slide on it. The water proofing is put inside the gap between the mating face ends of the roadway slabs in the bridge framework. The drainage elements are mounted in the same way and on top of the water proofing in the gap between the face ends of the roadway slabs joined together by an expansion joint.

EFFECT: increased quality of the expansion joint due to increased durability and safety of application.

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