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针对槽形钢折板补强H型钢梁-H型钢柱的偏心节点,研究了节点局部屈服荷载承载力的力学行为。通过建立5种可能形成的塑性屈服破坏模型,利用屈服线理论,推导出H型钢梁-H型钢柱偏心节点的局部屈服荷载承载力计算公式。取包含梁受拉翼缘在内的节点构件(1/4模型)作为试件,进行了6组拉伸加载试验,验证偏心节点的弹塑性响应。通过对应变分布和翼缘平面外残余变形响应的分析来验证塑性屈服破坏模型的准确性。
The mechanical behavior of the bearing capacity of the local yield load of the joint was studied for the eccentric joints of the H-shaped steel beam and the H-shaped steel column reinforced by the grooved steel plate. By establishing five possible plastic yield failure models and using the yield line theory, the calculation formula for the local yield load bearing capacity of an H-shaped steel beam-H-type steel column eccentric joint is deduced. Take the nodal member (1/4 model) including the flange of the beam as the test piece, six sets of tensile loading tests were conducted to verify the elasto-plastic response of the eccentric node. The accuracy of the plastic yield failure model was verified by analyzing the response of the deformation distribution and the residual deformation outside the flange plane.