钢结构以其独特的优越性在建筑工程中得到广泛应用 ,特别是高层、超高层、轻型钢结构 ,大跨度结构等应用的比较多。这是由于钢结构有许多优点 ,如强度高、塑性、韧性好、重量轻、材质均匀、制作简单、施工方便、工期短、节能环保、综合技术经济指标优、建筑造型美观、抗震性能 Steel structure has been widely used in construction projects for its unique superiority, especially in the applications of high-rise buildings, super high-rise buildings, light steel structures and large-span structures. This is because the steel structure has many advantages such as high strength, good ductility, good ductility, light weight, uniform material, simple manufacture, convenient construction, short construction period, energy saving and environmental protection, superior technical and economic indexes, beautiful architectural appearance and seismic performance