Novel reinforced concrete bridge plate expansion joint structure

The utility model discloses a novel reinforced concrete bridge plate expansion joint structure which comprises a bridge floor, a plurality of connecting steel bars are arranged in the bridge floor, anexpansion joint is reserved on the section of the bridge floor, a plurality of U-shaped boxes are arranged at the bottom of the section, and steel cover plates are arranged on the front faces and theback faces of the U-shaped boxes. Main components of the device are made of high-grade steel with high strength Q345 or higher strength, corrosion resistance and metal fatigue resistance, few maintenance and replacement are needed, long-term economic benefits of main body implementation and maintenance are obvious, the two parts of the device at the two ends of a seam have a telescopic function in the horizontal direction and the front-back movement, and left-right torsional deformation can be met; the bridge section jacking and replacing support can be lifted up and down in the future, the defects that an original st