Full-Scale Test on Plastic Rotation Capacity of Steel Wide-Flange Beams Connected with Square Tube Steel Columns
Full-Scale Test on Plastic Rotation Capacity of Steel Wide-Flange Beams Connected with Square Tube Steel Columns
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方管钢柱连接宽翼缘钢梁塑性转动能力实足试验
DOI：
10.11273/jssc1994.4.16_27
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发表时间：
1997
影响因子：
5.4
通讯作者：
K. Morita
中科院分区：
文献类型：
--
作者：
Kazuo Inoue;I. Kohzu;M. Tada;Eiji Tateyama;M. Tabuchi;M. Toyoda;M. Nakashima;Y. Maruoka;K. Morisako;K. Morita
讨论了连接细节对钢宽翼缘梁与钢柱连接断裂性能和塑性变形能力的影响。本研究中采用的新型扇贝普遍提高了梁柱节点的塑性变形能力。断裂模式证明了这一点：新型扇贝抑制了扇贝底部的脆性断裂，尽管这种情况在传统类型的扇贝中经常观察到。然而，改善的程度取决于钢梁的材料特性。大多数采用新型扇贝形的梁柱连接在梁翼缘的焊接开始/结束处都出现了断裂。在这种情况下，焊接质量对连接的延展能力起着重要作用。每层 1 条路径的焊道顺序以及焊剂流出片的使用可能会降低延展性能力，这是由于焊剂流出片应用经验不足时焊接质量较低和焊接缺陷发生率较低。
This paper discusses the influence of connection details on fracture property and plastic deformation capacity of steel wide-flange beams connected with steel columns. New types of scallop adopted in the present study generally improved the plastic deformation capacity of beam-to-column joints. This was demonstrated by the fracture mode : New types of scallop inhibited brittle fracture from scallop bottom, although it was frequently observed in the conventional type of scallop. Nevertheless, the degree of improvement depends on the material property of steel beams. Most of beam-to-column connections with new types of scallop exhibited fracture from weld start/end in the beam flange. In this case, quality of welds plays an important role in ductility capacity of connections. Weld pass sequence of 1path per layer and the use of flux run-off tabs potentially decrease ductility capacity, which is attributed to lower quality of welds and incidence of weld defects in case of inexperienced application of flux run-off tabs.