岩土工程建筑信息模型集成与仿真关键技术研究

Key technologies of building information model integration and simulation in geotechnical engineering

如何在建筑信息模型(BIM)平台上有效融合复杂地质体与工程结构体,实现岩土工程BIM的集成建模与仿真分析是目前面临的一个难题。为此,提出了一种复杂地质体与工程结构体BIM一体化建模与仿真技术。针对复杂地质体,开发了基于BIM平台的三角网曲面建模插件,通过样条曲面重构,构建了基于NURBS表达的地质体模型,确保三维地质体模型与工程结构体模型在数据存储和数学表达上的一致。针对工程结构体,创建了构件库与参数建模器,实现了岩土工程结构参数化建模。针对岩土工程BIM一体化模型,提出了动态施工模拟以及数值仿真模型转换技术,实现了岩土工程BIM的可协同可计算功能,为深化BIM技术在岩土工程中的应用提供了有效的途径。最后,依托十堰削山填坡造地工程开展示范应用。深入应用复杂地质体与工程结构体BIM一体化建模与仿真技术,实现模型构建与仿真分析一体化。验证该技术的有效性和适用性。

How to effectively integrate and simulate complex geological body and engineering structures on BIM(building information model) platform is a challenging problem faced in geotechnical engineering. This paper aims to propose an integrated modeling and simulation technology for complex geological body and engineering structures. A triangular mesh modeling plug-in is first developed based on BIM platform for complex geological bodies, and a NURBS surface is then built through sample surface reconstruction to ensure the consistency in data storage and mathematical expression between three-dimensional(3D) geological model and engineering structure model. Meanwhile, the component library and parametric generator are created to realize the customized modeling of geotechnical engineering structures. Furthermore, dynamic construction modelling and numerical simulation model conversion technology are proposed to realize the collaborative and calculable function of integrated BIM model, which provides an effective way to deepen the application of BIM technology in geotechnical engineering. Finally, a demonstration application is carried out based on the Shiyan hill-cutting and land-reclamation project. The BIM integrated modeling and simulation technology of complex geological body and engineering structure is applied to realizing the integration of model construction and simulation analysis, which verifies the effectiveness and applicability of the proposed technology.