Traditionally, operation and maintenance information for MEP mainly comes from completion data in the forms of drawings or documents.When the information is needed, it requires manual searches from such a huge amount of paper files.In order to realize the information transmission from design and construction phases to operation and maintenance period, effectively organization of such information by electronic means is the key issue to be resolved in current building lifecycle management.This can also enhance the information-aided maintenance.By introducing Building Information Model (BIM) and two-dimensional code, a BIM-based Facility Intelligent Management System (BIM-FIM 2012) is developed to realize the electronic integrated delivery of MEP, and to improve the maintenance management and emergency management of a building during its operation and maintenance period.The system also provides an effective way and platform to ensure the safe operations of all MEP systems.

BIM Server provides a solution for BIM to support construction life cycle. Currently, the structure of BIM Server is C/S, but gradually B/S also shows its advantages. The release of the HTML5 standard brings the WebGL technology which supports hardware graphics acceleration in browser and is one of a series of revolutionary Web technologies. Thereby the foundation is laid for achieving Web-oriented BIM information management and 3D display of BIM model. In this paper, the model information scope and its expression of Web-oriented BIM is analyzed, and the corresponding information management technology and the BIM model display based on the Three.js, which is a WebGL framework, are studied. Then, a WebGL-based platform for 3D display and information management of BIM is also developed. Application shows that the graphics platform of the platform performs stable with nice rendering for large BIM. Meanwhile the platform provides rich feature supports for Web client by favorable interactive functions, showing a great application value.

Management of machine, electric and plumbing (MEP) plays an important role during operation and maintenance management of a building. At present, building automation system (BAS) is the primary means of MEP management, but the monitoring information of BAS cannot be effectively shared or used by other systems. Data sharing within building lifecycle can be achieved by adopting building information modeling (BIM) technology while most BIM researches and applications for MEP focus on establishing a product model that contains a wealth of information to improve the management efficiency by information inquiries. Few researches in the integration of BIM and MEP monitoring information are reported. By studying the integrated approach of BIM and MEP monitoring information, an extended model of MEP monitoring information can be established based on BIM. The model can provide data to support the operation and maintenance management of MEP, maximizing the value of MEP monitoring information.

The Industry Foundation Classes(IFC) developed by International Alliance for Interoperability(IAI) has been known as a common product model for data exchange and model sharing.In architecture design, entity types and property sets in IFCs are nearly enough to meet the needs.However, in the construction, entity types are insufficient for data description.Therefore, we analyses the demand for data description in construction in mainland China, and extend the IFC model.At last, we test the extension model by some real projects and give some suggestions for further research.