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由钢筋砼梁或板构成的悬挑楼梯(以下简称悬梯),已大量应用于民用建筑,其设计与计算已有不少介绍。但介绍钢结构悬梯设计的文章尚未看到。因钢结构本身截面小,抗弯、抗扭特性较差,比钢筋砼悬梯要柔得多,同时,楼梯本身一上一下的反对称形式,也需慎重考虑它的空间稳定和变位。在工民建中,如有可靠的固定点,采用钢结构悬梯不仅克服了钢筋砼立模的困难,还可对建筑立面和空间处理提供很大自由度,使
The cantilevered staircases (hereinafter referred to as cantilevered ladders) made of reinforced concrete beams or plates have been widely used in civil buildings and their design and calculation have been introduced. However, the article describing the design of steel ladders has not yet been seen. Because of the small cross-section of the steel structure itself, its bending and torsion resistance is poor, and it is much softer than the reinforced concrete ladders. At the same time, the anti-symmetric form of the stairs itself requires careful consideration of its spatial stability and displacement. In the construction of workers and civilians, if there are reliable anchorage points, the use of steel ladders not only overcomes the difficulties of erection of reinforced concrete, but also provides a great degree of freedom in the treatment of building facades and spaces.