本文首先研究了对于在四个边进行了简单支持约束的带钢的临界拉伸瓢曲应力，并通过修正瓢曲应力系数K，得到了不同支撑条件下的临界拉伸应力计算公式，继而对带钢的瓢曲后行为进行了研究，最后引入了“有效宽度”概念来计算带钢不致发生屈服失效的极限载荷。
After the critical stress for tensile buckling of four-edge simply supported steel strips is studied , we got the critical tensile buckling stress calculation for nonsimply-supported steel strips by changing the coefficient K in critical buckling stress formula . Consequently , the post buckling behavior of the strips were studied, then the effective width was introduced to calculate the limit load for steel strips before strip yielding.
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