Considering the membrane effect of plates, the design of profiled steel sheets allows local buckling of plates, and can utilize post - buckling strength.

由于板件的薄膜效应，压型钢板的设计不仅答应板件出现局部屈曲，而且还可以利用屈曲后强度。

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Allowed the local buckling of elements and made use of the post-buckling strength, the effective width method is often used to calculate the load-carrying capacity.

为了用料经济，允许板件产生局部失稳，其承载能力以利用板的屈曲后强度为特点的“有效宽度”方法来计算。

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The concept of the buckling-strength coefficient to determine whether the local buckling occurs in the member is put forward.

为方便判断构件是否发生局部屈曲，提出了屈强系数的概念。

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