焊缝连接具有安全可靠、便于施工、经济等特点,它已成为钢结构中最重要和最普遍的连接形式,尤其是工程机械中更是大量采用焊缝作为承载部位的连接形式。钢结构设计规范、起重机设计规范及其他一些专业规范均对焊缝连接的计算作了规定。然而,由于焊缝本身形状不规则,且存在严重 Welded seam is safe, reliable, easy to construct and economical. It has become the most important and the most common form of connection in steel structure. Especially in engineering machinery, it is the connection form that a lot of welds are used as the bearing part. Steel structure design specifications, crane design specifications and some other professional specifications are provided for the calculation of weld connections. However, due to the shape of the weld itself is irregular, and there is serious