摘要
旨在充分利用和挖掘BIM的信息资源,实现工程结构分析模型的快速建模.首先,系统阐述了IFC关于建筑几何的语义描述方法,总结了提取构件截面、材料和几何信息的实体关联路径.其次,研究了IFC实体坐标转换关系,构建了基于仿射变换理论的坐标转换矩阵.接着,通过空间位置自动修正的方法,解决了多种形式的节点错位问题,从而顺利实现连续梁、跨层柱的单元分割和组装.最后,以多层框架、网架和索网等不同结构类型为例,验证本文快速建模方法的有效性和适用性.
This paper aims to make full use of information resources through BIM to achieve the rapid modeling of structural analytical model.Firstly,the semantic description method of IFC about building geometry is presented,and the entity association path for extracting the cross-section,material and geometric information of components are summarized.Secondly,the IFC entity coordinate conversion relationship is studied,and a coordinate conversion matrix based on the affine change theory is constructed.Next,through automatic correction of spatial position,various forms of node dislocation problems are solved.Consequently the element division and assembly of continuous beams and spanned walls are achieved.Finally,the effectiveness and applicability of the rapid modeling method in this paper is verified by taking different structural types such as multi-layer frame,space truss and cable nets as examples.
作者
王再兴
罗尧治
董小洋
WANG Zai-xing;LUO Yao-zhi;DONG Xiao-yang(Space Structures Research Center,Zhejiang University,Hangzhou 310058,China;National&Local Joint Engineering Research Center of Advanced Technology for Structure Design and Construction,Hangzhou 310058,China)
出处
《空间结构》
CSCD
北大核心
2022年第1期64-70,共7页
Spatial Structures
基金
国家自然科学基金项目(51578494)。
