Abstract Application of built-up box sections as columns of steel moment frames is very favorable due to their bi-directional flexural resistance. According to seismic provisions, for built up box columns, within a zone adjacent to the beam flange, flange and web plates of box columns shall be joined by complete joint penetration (CJP) groove welds. In spite of the fact that fillet welds are much easier to execute and are economically more efficient, they are prohibited within the panel zone of columns. In this paper the effect of weld specifications on seismic performance of panel zone in built-up box columns with corner welded joints is experimentally investigated, mainly focusing on the comparison of performance of fillet and groove welds used for fabrication of this type of columns. Based on the results of the experimental program on 1:2 scale specimens, representing beam to column connections of steel special and intermediate moment frames built using fillet and groove welds in panel zones, it is concluded that the performance of fillet welds could be as good as CJP groove welds in panel zones of built-up box columns for the qualifying drift angle of steel moment frames.

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焊缝规范对组合箱柱抗震性能的影响

摘要 组合箱型材由于具有双向抗弯能力，作为钢框架柱的应用非常受欢迎。根据抗震规定，对于组合式箱形柱，在与梁翼缘相邻的区域内，箱形柱的翼缘和腹板应通过完全熔透（CJP）坡口焊缝连接。尽管角焊缝更容易执行并且在经济上更有效，但它们被禁止在柱的面板区域内。本文通过试验研究了焊缝规格对角焊缝组合箱形柱面板区抗震性能的影响，重点比较了用于制造此类柱的角焊缝和坡口焊缝的性能。基于1上的实验程序的结果：