文档介绍：工程三维模型与虚拟现实表现基于IFC标准结构工程产品模型构造和扩展刘照球1李云贵2吕西林1 (1同济大学土木工程学院,上海200092;2中国建筑科学研究院,北京 100013) 【摘要】根据结构分析所涵盖的信息构造和设计结构产品模型信息基本框架,并对结构几何信息模型、荷载信息模型、分析信息模型的基本组成进行定义和表达。在基于IFC的EXPRESS-G图表达规范基础上,分别从几何信息模型、荷载信息模型、分析信息模型三个方面对IFC标准的结构产品模型缺失信息进行扩展。从而全面完善IFC标准的结构信息模型基本框架,以促进建筑结构设计过程中信息的有效交换。【关键字l产品模型扩展,结构信息模型,框架构造,I FC标准【中图分类号】 【文献标识码】A FC-BaSed Product Mode Construct on and Extens on fo r St ruct U ra Eng nee r ng nfo rmat on Liu Zhaoqiul Li Yungui 2Lu Xi inl (1CiVi Engineering ColIege of TongJi University,Shanghai ) (2China Academy of BuiIding Research,Beijing ) Abstract:This paper presents a preliminary framework for structural information product model according tothe information requirements at the structural design phase,and also,the conformations of geometry information,load information and analysis result information are define&In the paper, the models ofgeometry information and analysis result information of IFcstructaral information are extended respectively in terms oftherules ofE)(PRESS-G diagra皿The proposed results of thispaper provide technical supports for i皿proving the IFc structaral information model and for efficient information exchange inthe engineering design field Keywords:product modeling extension. structural information model, framework construction, IFc standard 基金项目:“十一五”国家科技支撑计划重点项目研究课题(2006 BAJ0l B01—01) 第二届工程建设计算机