In the prestressed steel structure,

In the prestressed steel structure, the bending member can convert part of the bending moment into axial tension through the prestress of the structure itself, thereby reducing the peak value of the bending moment and making it possible to reduce the cross section of the structural member. Can be more economical in the use of steel. Under normal circumstances, after a single tension, the prestressed steel structure saves 10% to 20% of steel compared to the ordinary steel structure. After multiple tensions, this value may reach up to 40%, and after using the prestressed innovative architecture Compared with the traditional ordinary steel structure, this structure even saves dozens of times of steel. For example, after using the prestressed steel structure in the Tianjin Ninghe Gymnasium built in 1984, the steel saving rate reached 11% to 12%. In the structure of the Sichuan Panzhihua Gymnasium, the prestressed steel structure should be adopted, which saves the entire project The rate reached as much as 38%.