数字孪生水利水电工程中BIM自适应流转技术研究

Research on technology of BIM adaptive conversion in digital twin of water conservancy and hydropower projects

为解决BIM模型在数字孪生水利水电工程各阶段应用中因业务需求不同导致其几何、材质、属性、结构等精度适配度不高的问题,设计了一套BIM模型按需自适应流转的技术方法,以实现BIM在水利水电工程数字孪生中的高效应用。该方法定义BIM模型属性、结构、几何、材质的数据导出规范,通过建立上述多维信息的映射关系,结合改进的3DTiles几何轻量化算法,实现BIM模型属性、结构、几何、材质按需自适应流转。基于该方法,依托Revit软件开展项目应用实践。研究结果表明:使用该方法流转的BIM模型结构齐备、属性完整,并能按需满足几何与材质的精度要求,同时支持高效应用与高性能渲染。研究成果可为BIM模型在水利水电工程全生命周期数字孪生应用提供基础技术支撑。

To solve the problem of geometric,material,attribute,structural accuracy adaptation of BIM models in various stages of digital twin water conservancy and hydropower projects due to different business needs.We designed a technical method for on-demand adaptive flow of BIM models to achieve an efficient application in digital twins of water conservancy and hydropower engineering.This method defined data export specifications for BIM attributes,structures,geometries,and materials.By establishing the mapping relationship of aforementioned multi-dimensional information,we can adaptively transfer the BIM attributes,structures,geometries,and materials as needed with the improved geometric lightweight algorithm of 3DTiles.By carrying out application practice with Revit,it is proved that the BIM model converted by this method had an integrated structure and attributes,maintained the consistency of geometric and material information,and supported efficient utilizing and high-performance rendering.The method can lay a technical foundation for the large-scale application of BIM models in digital twin water conservancy and hydropower projects.