摘要:建筑信息模型(Building Information Modeling)技术简称为BIM技术，是建筑CAD技术从基于点线面的二维表达向基于对象的三维形体与属性信息表达的转变。BIM技术方面的研究正成为国内外土木建筑工程信息技术研究的最大热点。本文详细阐述了CAD、BIM与协同的关系，指出BIM技术的目标、核心与基础是BIM研究与应用需要深刻理解、不可回避的三个关键问题，进一步介绍了上海交大BIM研究团队所开展的研究工作，最后总结了当前BIM研究与应用存在的几个问题和对前景的展望。

Abstract: BIM is the abbreviation for Building Information Modeling.It is the latest industry transformation from the architectural CAD technology based on two-dimensional expression of points, lines, and planes to the new technology represented with object-based three-dimensional shape and attribute information.The research on BIM technology is becoming the most attractive area on the application of information technology in Architecture, Engineering and Construction (AEC) industry around the world.This paper describes the relationship among CAD, BIM and collaboration in AEC industry.It is proposed that the goal, core, and foundation of BIM technology are three key issues which require a deep understanding and cannot be avoided for the BIM research and application.The relevant work carried out by the BIM research team of Shanghai Jiao Tong University is further introduced.Finally several problems and outlook on the current research and application of BIM are summarized.