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对6个受轴压和强轴方向循环弯矩的大宽厚比H型钢梁-柱连接进行试验研究。使用可靠的结构测试体系并选择不同横截面类型、腹板和翼缘宽厚比的试样。测试结果显示局部屈曲为试样的主要失效模式。由于这些样本的腹板和翼缘宽厚比较大,H型钢试样展现了其在一定塑性变形能力外的有限抗力以及耗能能力,因此推荐在震区使用这样的部件。翼缘宽厚比和轴压比也对滞回性能有很大的影响。此外,提出一个改进的极限强度的塑性阶段有效宽度法。
The experiment of 6 H-beam-column connections with large thickness-thickness ratio under 6 axial and strong axis cyclic bending moments was carried out. Use a robust structural test system and select specimens of different cross-sectional types, webs and flange to width ratios. The test results show that local buckling is the main failure mode of the specimen. Due to the large thickness of the webs and flanges of these specimens, H-section steel specimens demonstrate their limited resistance to plastic deformation and their ability to dissipate energy. Therefore, it is recommended that such parts be used in the earthquake zone. The flange width-to-thickness ratio and axial compression ratio also have a significant effect on hysteretic behavior. In addition, an improved plastic limit effective width method of ultimate strength is proposed.