岩土工程BIM建模与仿真计算一体化的程序实现

Program Implementation of BIM Modeling and Simulation Integration in Geotechnical Engineering

Revit作为我国建筑业BIM体系中使用最广泛的3D建模软件之一,能较好地应用于结构分析中,以满足现代工程设计的复杂要求。然而,Revit中缺少岩土材料的材质属性,岩土工程计算软件(例如FLAC3D软件)不能与其很好地对接,导致岩土领域的BIM技术发展陷入瓶颈。本文基于Revit 2015及Revit API技术,在Visual Studio 2015中通过C#语言进行二次开发,编制可将Revit模型转换成ANSYS及FLAC3D数值计算模型的程序。首先,该程序可在Revit中读取已有模型信息;而后,在ANSYS中以点、线、面、体的顺序生成模型并赋予材料属性,结构和设计人员自定义的材料参数均能一一对应;最后,在ANSYS中对该复杂模型进行网格划分,并将其导入FLAC3D中进行数值计算。本文基于一个模型转换实例,对带有自定义材料参数的复杂结构进行了数值计算,从而对该模型转换程序的可行性进行了验证。

Revit,one of the three-dimensional modeling softwares that are widely used in the BIM system of construction industry,is suitable for structure analysis to satisfy the multiple requirements of modern engineering design. However,there are few material properties of geotechnical materials in Revit,and some numerical analysis softwares in geotechnical engineering,such as FLAC3 D,cannot build a good connection with Revit. These become the barriers in front of the BIM technology in geotechnical engineering. In this paper,based on Revit 2015 and Revit API techniques,a conversion program of Revit to ANSYS and FLAC3 Dwas achieved by the secondary development using C #language in Visual Studio. First,the program read data of model in Revit,then rebuilt it in the order of points,lines,areas and bodies in ANSYS and assigned the material properties of model. For these two models in Revit and ANSYS,the structure and material properties which were defined by designers could mutually correspond by grouping function of the program. Finally,the model was meshed in ANSYS and imported into Flac3 Dfor numerical analysis. A complex model with self-defined material properties was analyzed as an example of model conversion in this paper,and the availability of the conversion program was verified.