钢结构的材料强度高,需要的截面小且壁薄,致使稳定问题成为设计中的一个十分重要问题。稳定设计涉及的面很广,从整体结构、结构的不同类型的构件直至组成构件的板件,都有失稳的可能,需要在设计中加以考虑。钢结构稳定的研究,近年来发展得很快;由弹性稳定发展到非弹性稳定;由 The steel structure has high material strength and requires a small cross-section and a thin wall, so that the stability problem becomes a very important issue in the design. Stable design involves a wide range of aspects, from the overall structure, the structure of the different types of components up to the components of the board, have the possibility of instability, need to be considered in the design. The research on the stability of steel structures has developed rapidly in recent years; from elastic stability to non-elastic stability;