钢框架梁柱焊接连接抗震性能试验研究

Experimental study on aseismic behavior of beam-column welding connections in steel frames

以梁端腹板的扇形孔形状为主要参数,进行了4个足尺钢框架梁柱焊接节点往复加载下的破坏试验。通过对弯矩—塑性转角和弯矩—累积塑性变形倍率试验曲线对比分析表明,扇形孔是节点变形能力和破坏形式的主要影响因素。改进扇形孔构造是一种有效措施,既可提高节点的抗震性能,又能保持制作工艺与传统节点基本相同。

For influencing factor in the form of scallops hole, the failure experiment was done about four full-size specimens of steel frame beam-column welding connections under cyclic loading. Com- parative reswcts of movement-plastlc corner cure with movement-cumulate plastic deformation multi- ple cure, show that the scallops hole and the steel tab have primary influence on the plastic deforma- tion capacity and failure modality of beam-column connections. Improvement in the scallops hole is an effective means, because not only is the aseismic behavior improved but also the construction tech- nique is the same as the traditional connections.