A BIM-based parametric modeling and engineering quantity statistics method for a component type curtain wall

The invention discloses a BIM (Building Information Modeling)-based parametric modeling and engineering quantity statistics method for a component type curtain wall. The dispersed component models arecombined into a curtain wall panel group; components which are mutually independent originally are linked together; the efficiency is improved for the establishment of a complete curtain wall model;meanwhile, the curtain wall panel group can automatically adapt to the size of a curtain wall grid; compared with the prior art, the method has the advantages that the accuracy of the structure size is guaranteed, the detail table with perfect information is finally obtained, accurate information data is provided for subsequent machining blanking and construction application, manpower and materialresources are well saved, construction is well guided, the machining blanking and construction efficiency of the component type curtain wall project is greatly improved, and the method is applied tothe field of curtain wall de