Cyclic Behavior of Steel Moment-Resisting Connections Reinforced by Alternative Column Stiffener Details Ⅱ. Panel Zone Behavior and Doubler Plate Detailing

摘要

After the 1994 Northridge, California, earthquake, a number of experimental and computational studies were conducted to further understand the role of panel zone shear deformation in seismic connection performance (FEMA, 2000a). Based on observations of the seismic behavior of pre-Northridge Welded Unreinforced Flange-Bolted Web (WUF-B) moment-resisting connections, and experimental and computational studies of several pre- and post-Northridge moment connection details, several conclusions regarding the effects of large panel zone shear deformation were drawn.