At present, in the bidding process of steel structure enterprises, the communication among the marketing personnel, the designers and the owners is not convenient, which greatly reduces effect of external publicity of steel structure enterprises. Based on BIM, the paper develops a marketing system for steel structure manufacturer companies, which includes the steel design system and the web display platform. The two platforms use the JSON to transform data with each other through the Internet. The marketing system enhances the connection among the marketing personnels, the designers and the owners, and is able to display the models to owners more intuitively than ever, which increases the communication efficiency and improves the propaganda effect.

BIM agrees with prefabricated building naturally. Thus this paper puts forward a view point that the value of BIM embodies in the fact that its 3D entity model provides the basic digital object for management collaboration. Around this viewpoint, this paper discusses the technical characteristics and application direction of BIM, including the version iteration, component recognition, model manipulation, and etc. Then, based on the discussion above, the key technical problems and solutions are explored, including the lightweight strategy based on data form, hybrid application of database, model display and control and associated management information on Web, QR code and RFID, and etc. At last, the prototype system is developed, and its effectiveness is verified through the actual engineering case.

BIM is difficult to be applied in the management of whole course.This paper has analyzed and has discussed its common causes, then has made further improvement and optimization based on IFC model server. The BIM engine that can be embedded in other management systems is built, and is combined with assembly construction management system and OA process management system in practice, to achieve the Modular Construction Information System based on BIM. It has addressed those common problems of BIM information system in a better way.

As the core concept of BIM technology, IFC is a general data exchange standard developed to improve the collaborative capabilities of all parties in construction projects. In order to solve the complex definition and inefficiency of the traditional IFC data storage based on object-relational database, this paper proposes a new IFC data storage model for data exchange through IFC XML format based on the object hierarchical database and introduces various technical difficulties and solutions in the process of pattern mapping. The database design were verified by experiments. This research has certain reference value for the effective management and utilization of IFC data.