English：

In order to solve the construction problem of the complex ribbon-shaped glass curtain wallsystem on the facade of Xi’an Jinghe Culture and Art Center project, ensure the installation accuracy andaccelerate the progress of performance, the finished steel weld-free connection is innovatively used toreplace the traditional welding fixation method, and the multi-dimensional bolted adjustment joint isdesigned. The 3D laser scanning and BIM technology are used to quickly retest the main structuredeviation, and the collision and cavity inspection are completed in the model. At the same time,combined with the on-site lifting bearing capacity and transportation restrictions, the size of the assemblyunit is reasonably divided, and the welding assembly is moved forward to the factory. After the materialenters the field, it can be lifted in place as a whole. The practical application shows that the weld-freeconnection of finished steel avoids welding deformation from the source and ensures the accuracy of thebase layer. Compared with the ordinary aluminum alloy keel, the vertical keel is still plug-in connection,and the horizontal keel is changed from spring pin to welded-free stainless steel bolt connection.Combined with 3D laser scanning, BIM and prefabricated construction technology, the efficiency ofmeasurement and installation is significantly improved, and the perfect appearance of interior and curtainwall is guaranteed.