Stadium Steel Structure Design

The total construction area of ​​the stadium project is 143,000 square meters, and the total investment is about 1.8 billion. The overall shape of the gymnasium is an elliptical sphere. The stadium steel structure design with a space frame structure. The plane is elliptical, the long axis is 126m, the short axis is 86m, the sag height is 7m, and the sag-span ratio is 1/13.
The steel structure roof is supported on 36 elliptical steel tubular concrete columns, which form a whole with the lower main structure.
Use midas, ansys and abaqus to build the overall model of the stadium steel structure and the lower grandstand structure for structural analysis and calculation, and use forran to check the bearing capacity of all nodes and welds of the upper chord reticulated shell. On the basis of the full stress criterion method, the rod section of the upper chord reticulated shell of the gymnasium is optimized by reducing the stress ratio; at the same time, the prestress of the lower chord cable is optimized based on the principle of eliminating the horizontal thrust of the reticulated shell to the substructure. On the basis of the above optimization design, considering the combination of working conditions such as dead load, live load, snow load, wind load, temperature effect, etc., the static analysis of the structure considering geometric nonlinearity is carried out, and the sections that do not meet the requirements of the code are adjusted. . At the same time, the stability analysis considering geometric nonlinearity and material nonlinearity is carried out for the reticulated roof shell.