Fracture of steel moment connections in the Northridge earthquake

摘要: Brittle fracture of moment connections in special moment-resisting frames was not anticipated as a failure mode before the Northridge and Kobe earthquakes. The fractured because very low toughness weld material pre-existing defects rot pass welds. This paper presents authors'experience with investigation, testing repair connections. It emphasizes nees to include considerations into design process steel subjected seismic loads. investigation consisted three-dimensional dynamic analysis inspection