钢框架梁柱焊接连接抗震性能试验研究

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。

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

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.Comparative reswcts of movement-plastic corner cure with movement-cumulate plastic deformation multiple cure,show that the scallops hole and the steel tab have primary influence on the plastic deformation 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 technique is the same as the traditional connections.