Abstract: The rebar model based on BIM technology can be used for direct calculation of engineering quantity, construction guidance, collision detection and automatic processing. Although the rebar model can be output by some software such as Revit and Tekla, the model needs to be re-established according to the results of structural design software. The core algorithm of these software is not open, which cannot be used for reference by domestic theoretical research or software development. Besides, current research mainly focuses on secondary development for the information sharing between different software, which is not universal. This paper analyzes how to express the geometric information of the rebar model in industry foundation classes (IFC) standard and studies how to use parameters to generate the rebar model based on IFC standard automatically. This study focuses on the generation algorithms for the geometric information of reinforcement model. At the end, the feasibility of the algorithm is verified by generating a simply supported beam IFC model with longitudinal rebar and stirrups.

Key words: building information model, industry foundation classes standard, rebar model, geometric information, parameterized generation