【摘要】 BIM模型不支持有限元计算，且BIM模型与有限元分析模型数据交互困难，故BIM技术正向设计过程中存在建模效率低、模型修改困难等问题，无法做到BIM结构设计与有限元力学分析一体化，增加了结构模型建模与纠错成本.本文依托Revit和Midas/Civil软件平台，在Dynamo环境下采用IronPython语言设计了一套Revit-Midas/Civil的模型信息转换程序.以博士大桥主桥为对象，通过程序自动实现：1)Revit模型桥梁构件分解、截面特性计算、拉索及梁塔弹性连接处理，并转换成适用于Midas/Civil的语言格式MCT文件，实现了Revit向Midas/Civil模型信息自动转换；2）将有限元计算结果反馈到Revit模型中，对作用效应信息按数值大小赋予渐变颜色，实现了在BIM模型中显示有限元分析结果的展示功能.本文程序可实现Revit-Midas/Civil模型信息转换，有效提高了BIM正向应用效率，弥补了BIM技术在桥梁结构分析方面的不足.更多还原

【Abstract】 The BIM model does not support finite element analysis, and data exchange between the BIM model and the finite element analysis model is difficult. As a result, the forward design process using BIM technology faces issues such as low modeling efficiency and difficulty in modifying models. This makes it impossible to integrate BIM structural design with finite element mechanical analysis, thereby increasing the cost of structural model creation and error correction. Based on the Revit and Midas/Civil software platforms, a set of Revit-Midas/Civil model information conversion programs is designed with the IronPython language in the Dynamo environment. Taking the main bridge of Boshi Bridge as an example, the program automatically realizes the following aspects: 1) It becomes possible for component decomposition in the Revit model bridge, section characteristics calculation, cable, and beam tower elastic connection processing. Then, the processed information was converted into the Midas/Civil language format MCT file, realizing the automatic conversion of the Revit to Midas/Civil model information; 2) The calculation results from the finite element analysis are fed back to the Revit model. The effect information is given a gradient color according to the numerical value, realizing the display function in the BIM model for the results of finite element analysis. This proposed methodology can realize the information conversion between the Revit-Midas/Civil model, which effectively improves the efficiency of BIM forward application and makes up for the lack of BIM technology in bridge analysis.更多还原