Ultra-shallow-buried comb plate bridge expansion device

• Main Author: LIU ZUJIANG
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2021
• Subjects: ASSEMBLY OF BRIDGES; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; OR VIADUCTS

The invention discloses an ultra-shallow-buried comb plate bridge expansion device. The device comprises a beam end and an expansion joint notch. The device is characterized in that: the upper surface of a fixed comb plate (4) is flush with the upper surface of a movable comb plate (7), the fixed comb plate (4) and the movable comb plate (7) are mutually crossed and meshed at a joint through a comb structure, and the upper surface of the fixed comb plate (4) and/or the upper surface of the movable comb plate (7) are/is provided with a plurality of grout overflow holes (5) penetrating through the comb plates. or a grout overflow hole (5) is additionally formed in the upper surface of a dustproof metal plate (6) and located in a movable telescopic area between the fixed comb plate (4) and the movable comb plate (7). The device is reasonable in structure and convenient to install, the compactness of concrete can be guaranteed, the technical problems of the compactness and flatness of the concrete of the bridge t