腹板开孔-翼缘削弱型刚性节点的数值研究

1994年北岭地震以来,翼缘削弱型节点和腹板开孔型节点成为抗震节点的传统形式。滞回试验表明,这两种节点均具有良好的抗震性能。介绍腹板开孔-翼缘削弱型节点在往复荷载作用下的非线性有限元分析。结果表明,这种节点形式比传统节点抗震性能更好。研究了节点域强度,连续板及开孔长度的影响。

Numerical Study of Slotted-Web-Reduced-Flange Moment Connection

Reduced Beam Section(RBS) and Slotted Beam Web(SBW) are two types of seismic resistant moment connections that were introduced after the 1994 Northridge earthquake.These connections have been tested under cyclic loading and have had acceptable performance.In this paper,a new hybrid connection is introduced that is composed of RBS and SBW and is named Slotted-Web-Reduced-Flange(SWRF).Nonlinear finite element analyses are performed on SWRF under cyclic loading.It is shown that the new connection in some cases performs better than its RBS and SBW predecessors.The effects of panel zone strength,continuity plates and slot length are also investigated.