Layered-assembly-type building and construction method of layered-assembly-type building based on BIM

The invention relates to the field of buildings and provides a layered-assembly-type building and a construction method of the layered-assembly-type building based on BIM for solving the problem thatthe assembling construction efficiency is low in construction of an existing assembly-type building. The layered-assembly-type building comprises a foundation bottom plate, a central cylinder, multiple layers of steel structure frames, multiple layers of floors and outer wall bodies. The central cylinder is erected in the middle of the foundation bottom plate, and the lower end of the central cylinder is spliced with the foundation bottom plate; the multiple layers of steel structure frames and the multiple layers of floors are spliced upwards from the foundation bottom plate in a sequentially-overlapped mode; the lower end of the lowermost layer of steel structure frame is spliced to the foundation bottom plate, and the sides, close to the central cylinder, of the layers of steel structure frames are connected wi