Large roof typesetting construction method based on BIM (Building Information Modeling)

The invention discloses a typesetting construction method based on a large roof, which relates to the technical field of building construction, and comprises the following steps: converting a two-dimensional model into a three-dimensional model, splitting a roof project into small roof unit plates, forming a plate system, classifying the small roof unit plates by using a building information model, performing parameterized material statistics and material tracking by using the BIM, performing on-site paying-off positioning through a station site, performing on-site paving according to a brick sequence in the BIM model, performing processing and finished product protection on bad roof detail nodes, and performing subsequent construction after the roof meets requirements; according to the method, a brand new method is created, the original complex roof engineering design is deepened into a plate type system, then accurate laying and arrangement are conducted according to the originally determined scheme, the ov