A 3-D Structural Components Automatic Modeling Method Based on BIM

With the application of 3D building information model(BIM) technology and computer technology, facing the construction engineering structure design part, according to the related engineering design specifications, it designs automatic modeling method for three-dimensional structure. The method mainly aims at reinforced concrete frame structure. Based on the completion of BIM model by building professional, firstly vertical concrete column components are extracted from building model, and digitalized. And then through the establishment of relationship between topological constraint and size constraint, the space position and section size of connection column frame beam, second beam and the plate are determined in turn. Finally, by adopting Visual Studio development platform, using C++ and C# programming language and calling application program interface provided by Revit, the 3D building information model of frame beam, second beam and the plate are generated automatically in turn. This method is validated by engineering examples whose results show that the effect of regular structure of the building turns out to be good.