焊接孔长度对钢框架梁-柱刚性节点性能的影响

Effect of Length of Access Hole on Behavior of Steel Beam-column Moment Connections

对焊接孔长度扩大的钢框架梁-柱刚性节点进行了空间非线性有限元分析.分析结果表明,焊接孔长度的扩大显著地降低了梁-柱连接面处的对接焊缝和焊接孔切角端开裂以及翼缘脆性破坏的可能性,但过长的焊接孔也会导致梁侧向稳定的丧失.

The effect of enlarging the length of access hole on the behavior of steel beancolumn moment connections was studied throuth 3D nonlinear finiteelement analyses of connection subassemblies.The analytical results show that increasing the length of access hole remarkably minimizes the potential fracture at the groove welds of beamcolumn interface and the root of access hole,therefore the potential of brittle failures in the beam flange is reduced.But over increasing the length of the access hole will lead to the loss of lateral stability of beam.