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概括介绍国内外对焊接工字钢梁超屈曲强度研究的各种方法，通过大量的计算和分析，给出焊接钢梁受纯剪破坏的简化模式和极限剪力的计算公式，计算结果与试验结果符合较好．
The various methods for studying the super-buckling strength of welded I-beams at home and abroad are summarized. Through a large number of calculations and analysis, the simplified model for the failure of welded steel beams subjected to pure shear and the formula for calculating the ultimate shear force are given. The calculated results are in accordance with the test results. better.