KEYWORDS: Data modeling, 3D modeling, Curtains, Instrument modeling, Visual process modeling, Clouds, 3D scanning, Glasses, Target detection, Laser scanners
BIM technology (Building Information Modeling,referred to as BIM) is a digital expression of the physical and functional characteristics of engineering projects,and a shared knowledge resource of relevant information of engineering projects.It is a digital tool applied to the engineering design and construction management,supporting the continuous and real-time application of various project information,which can greatly improve the quality and efficiency of the design,construction and even the whole project,and reduce the cost.With the in-depth development of new digital technology,BIM technology is more and more widely used in construction engineering.3D laser scanning technology,as a new surveying and mapping technology,combined with the application of Robot measuring and setting out technology,can obtain the three-dimensional coordinate data of the target object at a non-contact high speed and accurately,which greatly improves the production efficiency.During the construction of building curtain wall data,this technology can be used to obtain the spatial point cloud of the building and establish a real three-dimensional building model,so as to guide parametric ordering,rapid setting out,positioning and installation.We took the "magic cube" building curtain wall project as an example and introduced the in-depth application of BIM+3D laser scanning technology and Robot measuring and setting out in the construction process of building curtain wall.During the implementation of the project,3D laser scanner was used to scan the main body of the building steel structure.RealWorks software was used to process the point cloud data to obtain the accurate building model[1].On this basis,size information was extracted from the model to replace the traditional measured real quantity,and the BIM model was compared with the point cloud model[2].Conduct curtain wall whole process construction guidance and follow-up operation and maintenance.
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