Municipal drainage pipeline connecting structure and construction method

The invention discloses a municipal drainage pipeline connecting structure and a construction method.The municipal drainage pipeline connecting structure comprises rubber belts, flange plates fixed to the ends of pipeline single bodies and locking pieces, when pipelines are connected, the multiple rubber belts stretch across the two sides of a groove and are distributed in the length direction of the groove at equal intervals, and the rubber belts serve as supporting pieces; every two adjacent rubber belts jointly overhead one pipeline single body in the center of the groove, and the axes of the adjacent pipeline single bodies are collinear; the locking piece is used for locking the two flange plates which abut against each other in the adjacent pipeline single bodies. When the connecting position of the pipeline is sealed, the rubber belt serves as a sealing piece and is used for tightly wrapping the flange plates which abut against each other in the adjacent pipeline single bodies in a sealing mode. The con