1.Good seismic performance: due to the good ductility of steel, it can not only weaken the earthquake response, but also make the steel structure have the deformation ability to resist strong earthquakes;

2.Light weight: it can significantly reduce the vertical load and seismic action transmitted from the structure to the foundation;

3.Make full use of building space: due to the small column section, the building area can be increased by 2~4%

4.Short construction period and fast construction speed;

5.Larger space is formed, the plane layout is flexible, the rigidity of each part of the structure is relatively uniform, the structure is simple, and the construction is easy;