轧制工字梁用的异形坯 beam blank
桥式起重机采用工字形截面作为主梁，使用多年后该结构形式的主梁上翼缘板和腹板连接的主焊缝及母材多处产生裂纹，甚至发生主梁断裂事故。
Cracks occurred in the main weld joining the web and upper wing panel of an overhead crane girder of I-section, some of which have expanded to the structure material and even led to girder fracture.
本文研究了纯弯工字形薄壁钢梁组成板件局部屈曲与整体屈曲间的相互作用。
This paper deals with the interaction of local and overall buckling in thin-walled steel I-beams under pure bending.
在纯弯或纯剪分别作用下的工字形焊接板梁，在弹性范围内腹板屈曲时，翼缘会对腹板起约束作用。
When a welded I-section plate girder is subjected to bending or shearing, buckling of web in elastic range will be restrained by flanges.
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