摘要:本文运用建筑信息模型BIM(Building Information Modeling)，研究了虚拟设计、虚拟施工以及基于虚拟模型的算量技术，通过探讨BIM相对于二维CAD图纸的优势，阐明了BIM虚拟设计技术对建筑工程行业的革命性作用，采用BIM协同设计技术，提升了各专业人员间的协同、节省了建筑成本，并将其运用于大栅栏北京坊大型工程项目实例，展现了虚拟设计、虚拟施工及项目管理过程，以改善设计质量和建筑性能，优化和完善设计方案。

Abstract: This paper presents virtual design, virtual construction and Engineering quantity of building information modeling (BIM).BIM has the advantage over the traditional 2D CAD technology in improving the collaboration and the construction productivity among those who participate in the projects. Moreover, the building cost is saved by using BIM technology by the reduction of design and construction errors in the early stages and reduction in time required to complete the construction. Application of BIM technology in Beijing facilitates the design and the construction of the building, a computer-based 3D model is built virtually and helps engineering in construction, scheduling, planning and cost estimates.