Incremental launching construction device and construction method for inclined bottom steel box girder

The invention discloses an incremental launching construction device and method for a sloping bottom steel box girder, and relates to the technical field of bridge body construction. The two temporary buttresses are vertically arranged on the top face of the supporting beam, and first wedge-shaped steel base plates are arranged on the tops of the temporary buttresses; the large jack assembly is vertically arranged between the two temporary buttresses and can move in the bridge direction relative to the supporting beam, a second wedge-shaped steel base plate is arranged on the top of the large jack assembly, and the top face of the first wedge-shaped steel base plate and the top face of the second wedge-shaped steel base plate are both matched with an inclined bottom plate of the inclined bottom steel box beam. The invention further discloses a construction method based on the incremental launching construction device. According to the incremental launching construction device and method, the problem that incr