Research On Extraction And Application Of Building Model Information Based On BIM+AR Technology

With the advent of the information age,BIM technology has become the mainstream of the development of the construction industry.BIM(Building Information Modeling)integrates the information of the entire life cycle of a building,and relies on the visualized three-dimensional model as the carrier,and finally realizes the information management and application of the entire life cycle of the construction project.Although the information data contained in the BIM series software is relatively comprehensive and abundant,because different BIM software uses different data formats,there are problems of insufficient information sharing and low interaction efficiency in the BIM application process of construction projects,and it is impossible to realize the full life cycle of the building.Information management,and due to the long construction period and the unpredictability of the construction site,the application of BIM technology on the construction site is still limited,and targeted guidance cannot be carried out.In summary,there are still many problems and challenge with BIM technology..In order to solve the above problems,this article has thoroughly studied Revit and its API,one of the mainstream BIM software,and used the mainstream language C# to develop the software again.The detailed model information such as the attribute information of the building model in Revit,material mapping information,geometric entity information,etc.Perform extraction and create a one-click extraction plug-in for model information,export the extracted information to an extensible general format XML format for storage,realize the complete export of building model information in Revit software,and provide a strong guarantee for BIM information sharing and collaborative work.In view of the challenges faced by the application of BIM technology in the construction site,this article uses BIM+AR technology to build the scene of the building model on the Unity3 D engine,and compiles the C# script to parse and read the extracted XML format model information.And it is associated with the corresponding model components,and with AR technology,the model and information are displayed on the mobile terminal without damage,and the BIM model and information are seamlessly integrated into the real environment,which is helpful for the visual management of the construction site.Finally,the verification of information extraction and AR function display was carried out through an example of a university’s engineering training center.Through the research of this article,the problem of insufficient information sharing in engineering application of BIM technology and the problem of ineffective application of BIM technology in the construction process have been effectively solved.In order to realize the sharing of BIM technology information,the application value of BIM technology in the construction site can be maximized.Provides new ideas.