In that the traditional design methods for prefabricated buildings fail to meet the modularization and standardization of modern construction, problems arise including the low-efficiency of prefabricated building designing, disconnection between design and construction, and etc. For solving the problems, the PKPM-PC, a BIM-based analyzing and designing software for prefabricated buildings is developed, which provides calculation tools for prefabricated concrete components during the demoulding, transporting and hoistiong process, and implements functions including BIM modeling, structural analysis, 3D splitting and collision, collision detection, BIM-data directly used by component processing equipment, and etc. The PKPM-PC provides an easy-operated BIM design method for numerous design units, which improves design efficiency, reduces design errors, and promotes the process of housing industrialization.

The BIM-based HVAC software is an inevitable result of the combination of computer technology and HVAC technologies. It is a chance of great improvement of the level of HVAC software. For the HVAC software development engineers, it is a challenge as well as a chance from scatters to integration and from a closed system to an open system. For LC of buildings, the unique characteristics and data share within and between professions to effectively use the professional models are concentrated. Based on the development and requirements of new HVAC design software, the research on how to use BIM technology are discussed.

According to the demand of the whole industry chain of prefabricated building, and based on the independent BIM platform, this project carries out the key technology research on the collaborative work of the prefabricated building design, production, transport and construction, establishes the BIM -based whole process application system of the prefabricated building, and applies it to the demonstration project application. Through the implementation of this project, independent intellectual property BIM platform, software, systems and standards are developed to provide technical support for the whole process application of the prefabricated building. The project fully explores the advantages of BIM technology information integration, improves design efficiency by more than 20%, and reduces 80% manual test and measurement, greatly reduces engineering cost, which has obvious social and economic benefits and promotes the sustainable development of the construction industry.