摘要:对于造型奇特、曲线复杂的模型, 采用常规三维建模方法建模流程复杂、模型修改繁琐, 而基于国产软件BIMBase的参数化建模能解决以上问题。本文以人行拱桥为例, 介绍了BIMBase参数化建模流程, 研究针对人行拱桥的参数化建模方法, 基于Python语言编写代码设置人行拱桥相关参数, 对模型几何信息建立相应的关联性, 从而实现人行拱桥参数化建模, 最后查验模型的准确性, 并将常规三维建模方法与基于BIMBase的参数化建模方法进行对比。该参数化建模方法有效解决了人行拱桥建模困难、建模流程繁琐和模型修改麻烦的问题, 提高设计效率, 实现模型大批量快速设计, 表明BIMBase参数化建模在三维建模中具有可行性与先进性, 同时为基于BIMBase的参数化建模技术提供参考。

Abstract: The parametric modeling based on the domestic software BIMBase can handle the models with peculiar shapes and complex curves, complicated modeling process and model modification by using conventional three-dimensional modeling methods. Taking the pedestrian arch bridge as an example, this paper introduces the BIMBase parametric modeling process, studies the parametric modeling method for the bridge, and then sets the relevant parameters of the bridge based on python language writing code, after which the corresponding correlation of the model geometry information is established to realize the parametric modeling of the pedestrian arch bridge. Hence it succeeds in checking the accuracy of the model and comparing the conventional three-dimensional modeling method with the BimBase-based parametric modeling method. This parametric modeling method effectively manages difficult modeling, cumbersome modeling process and model modification of the pedestrian arch bridges. What's more, this method also improves design efficiency and realizes large-scale rapid model design, which shows that BIMBase parametric modeling is feasible and advanced in three-dimensional modeling, and provides a reference for BIMBase-based parametric modeling technology.