Beijing Zhongguancun Technology Park-Fengtai Innovation Center Project is a high-rise building integrating government office and international business, with a total construction area of 580000 square meters.It has the huge engineering volume, the long construction period and the complex scale of electromechanical pipelines.The complicated construction of curtain wall and landscape is also the feature and difficulty of this project.BIM technology for this project covers the entire life cycle of the building from pre-design, construction to post-operation stage.The main application points of BIM technology are including collaborative management platform, 3D drawing review, electromechanical integrated, construction simulation and the VR application for the key area of hardbound model to insure the successful implementation of the project.In addition, these applications can shorten the construction period, reduce costs, and create a quality building.

As the key supporting project of BOAO Forum for Asia 2016, BOAO Airport was built in 10 months. The construction speed was double of the domestic similar projects. Considering the short period and the high orientation, the project used BIM technology to obtain high quality and performance, applied data reference for the airport construction under BIM times.

In recent years, BIM technology, as an increasingly sophisticated technical solutions and management tool, has received more and more attentions in engineering design in China. By building a BIM collaborative management platform, this paper outlines the comprehensive application of BIM technology during the design stage of SongZhuang Town 0301-1201 plot F3 other multi-functional land project, which not only saves time and economic costs, but also trained a large number of BIM personnel for the future. This engineering construction project has provided valuable success experience.

This paper analyzes the patent application status in the field of BIM, including the trend of patent application, the distribution of applicant types, the technical distribution and development of major applicants, by means of collecting, indexing and carding the patent documentsin the field of BIM. According to the technical branch of the BIM patent application that is summarized and analyzed, such as system integration, model optimization, construction management optimization, construction scheme optimization, system development and so on, the patent technology development of several representative applicantsis reviewed and analyzed.