IFC架构及模型构成分析

针对IFC（建设和设备管理行业工业基础类）标准表达建筑信息模型（BIM）的复杂性问题，分析了IFC标准体系构成的主要思想和BIM模型表达过程的核心环节。在研究IFC标准体系的基础上，梳理了各层之间的资源组织情况。利用一个矩形梁实例，从建筑实体对象、材料属性、关系组织和几何表达等方面，对IFC标准表达BIM模型的过程进行了深入分析，通过分析得到了IFC标准描述建筑信息模型的4个关键要素。

Analysis on IFC Schema and Model Structure

To the complexity of IFC standards＇ expression for the BIM model, the idea of IFC constitution system and the key points of the BIM model＇ expression are analyzed. Based on the structures of IFC standards, the organization of resources between the layers of the structures are parsed. Then using of a rectangular beam analyzes the method of BIM expression from physical objects, material properties, rela- tionship organization and geometric expression. The analysis gets four key elements for the expression of Building Information Modeling. Finally, look forward to the future of using IFC standards in the field of BIM application.