Box culvert rapid construction tool and construction method

The invention discloses a box culvert rapid construction tool and method, and the tool is characterized in that a first rail is formed by sequentially splicing a plurality of rail assemblies, and the first rail is configured to support a material conveying device to move and communicate with a box culvert to-be-installed position and a first slewing bearing device; the second rail is formed by sequentially splicing a plurality of rail assemblies, and the second rail is configured to support the material conveying device to move and communicate with the first slewing bearing device and the prefabricated box culvert stacking position; the first slewing bearing device is configured to support the material conveying device to move and drive the material conveying device to rotate, so that the material conveying device moves from the second track to the first track; the material conveying device is configured to bear the prefabricated box culvert to move on the first track, the second track and the first slewing b