Assembly method for constructing building by utilizing simplified houses

The invention discloses an assembly method for constructing a building by utilizing simplified houses and relates to the technical field of construction. The method starts from installation location and connection of the simplified houses, first the simplified houses for building each layer of a building are assembled well on a steel frame, the well assembled simplified houses are stacked through a double beam bridge type crane, and finally the building is constructed. The simplified houses are quickly installed and located by installing guide rods and guide drums, and the simplified houses can be connected and reinforced by the matching between a connecting piece and a connecting groove, the pouring of thin sand concrete and the adoption of a welding mode. The simplified houses are first prepared and then installed, preparation and installation sites can be separated, and the mode can greatly shorten a construction period; and most of work is done on the ground, so that the risk of working high above the ground is avoided. The assembly method for constructing the building by utilizing the simplified houses has the advantages that the building is firm in structure, simple to assemble, safe to construct and short in period and the like.