Total Assembly Construction Technology of Ultra-long Variable Cross-section Spiral Aluminum Plate Unit of Qingdao Citizen Fitness Center Sports Stadium

摘要

Qingdao Citizen Fitness Center Sports Stadium is saddle-shaped with a construction area of about 140,000m~(2). The rippled roof and fa?ade are assembled with ultra-long variable cross-section spiral aluminum plate units. The largest aluminum plate unit is 1.5 tons heavy and 13 meters long. The main structure of this project is the steel structure that can deform due to the factors such as temperature and subsidence, thus making it difficult to accurately install the aluminum plate curtain wall. During construction, the total station is used several times for data acquisition to generate the BIM model, which is aligned, compared and analyzed with the theoretical 3D model for providing the accurate support for the construction process. A 1:1 main truss of the steel structure is erected on the fa?ade to simulate the tire frame erection and assembly the ultra-long variable cross-section spiral aluminum plate units on site. The main steel structure, with the lowest point at 26 meters and the highest point at 49 meters, is lifted by the truck cranes and inserted for installation from up to down. This process is a new curtain wall construction method that increases the installation efficiency by 30%, improves the construction quality and guarantees the construction safety. It can provide the technical reference for the curtain wall work of other similar large sports stadium projects in the future.