The integration of structural calculation models with BIM models is a key step in achieving the full application of BIM technology in structural engineering. This study investigates the data format of reinforced concrete structural calculation models and generates IFC models containing concrete components and rebar based on the component and reinforcement data in the calculation model. Through distributed database storage, the merging and data management of IFC models are realized. The related software developed in this study enables the accurate generation of structural BIM models from structural calculation models, which can be applied in scenarios such as collision detection, quantity estimation, and construction drawing generation. The effectiveness of the proposed method has been verified through practical project applications.