System and method for Bailey beam incremental launching construction

The invention belongs to the technical field of municipal bridge engineering, and particularly relates to a system and method for Bailey beam incremental launching construction.The system comprises a steel pipe stand column, a bearing beam, a Bailey beam body and a hanging beam, the Bailey beam body is installed on the bearing beam, and the steel pipe stand column is used for supporting the bearing beam; a suspended beam and a rail trolley are installed at the ends, away from the bearing beam, of the steel pipe stand columns, wheels are arranged on the surface of the rail trolley, the rail trolley is placed on the surface of the bearing beam and used for supporting the bailey beam body and moving the bailey beam body through the wheels, and rectangular rings are fixedly connected to the two sides of a rail. Through cooperation of the rail trolley, the chain block and the supporting rod, the problem that in the prior art, when a bailey beam body is dismantled, a hoisting machine does not have enough working sp