Implementation Of A Cloud BIM System For Smart Construction Site

The Building Information Model(BIM)integrates the 3D visualization model of the building project with the digital data of each domain attribute,enabling the project designer,project manager,construction unit,owner and customer to directly access the 3D visualization model.Observe the designed building and obtain relevant data from it.Based on the needs of smart sites,this paper hopes to solve existing BIM problems through cloud technology.In this paper,the IFC file data processing and web browser presentation and interaction method of BIM project are used,and the method of data storage and reading is realized by WebGL technology,and the data design of cloud database nature suitable for network BIM system is designed,using MapReduce technology.Develop an IFC Parser that analyzes walls,columns,beams,and boards,and analyzes and stores its BIM data into the cloud database of the system.The features of this system are as follows:(1)Real-time: The system provides services that allow users to access the BIM model online,anytime,anywhere,using desktop computers,laptops,tablets,smartphones,etc.,so that users can use the system in any place where they need it.As long as you connect to the network to use the relevant equipment,you can get the required BIM information.(2)Direct visibility: Provides 3D visualization interface and BIM 3D model review function,allowing users to freely switch perspectives and control vision in the model scene through keyboard and mouse;and provide feedback function for object clicks.The user can know the related attributes and information of the object by clicking on it.(3)Convenience: This system can be used directly by using a web browser,no need to install other browser plug-ins.This system uses the HTML5 <canvas> element to draw 3D objects through WebGL technology,making it easier for users to open their files.(4)Sharing: Users can share the link information of relevant BIM items for related users to view,the data can be shared and used,and multiple users can view the same BIM file at the same time.(5)Integration: Through the upload function of BIM files,the files can be parsed into the cloud database of the system.The readable file data currently contains the IFC file model exported by the BIM project developed by Autodesk Revit and Graphisoft ArchiCAD.It also provides users with the ability to download IFC files directly or view BIM models directly from the web.The cloud-based BIM system constructed in this paper relies on the smart site to help all BIM project stakeholders to use BIM projects together,increasing the possibility and timing of more use of BIM projects.