Abstract：
The load bearing system of the main steel structure of National Indoor Stadium is composed of profiled steel concrete frame, shear wall and steel support. Due to its large span, complicated construction of the profiled steel frame and various types of steel supports and corbels, the fabrication is a hard job. Through controlling the fabrication process and the quality of the main steel structure, site erection was carried out very smoothly. The welding quality completely reached the standard requirements, and the once punching rate of the high-performance bolts reached 99%, creating an excellent project.
