The existence of perforation affects buckling characteristic and load capacity of members and makes the design formula different with that of non-perforated members.

• 孔的存在导致薄膜应力的重新分布，影响构件的屈曲特性和承载能力，使得无孔构件的分析与设计公式不再适用于开孔构件，因此有必要研究开孔构件。