Plastic Deformation Capacity of and Fracture Prevention Design Method for Welded Moment Connections Strengthened by Thick Flanges

摘要

With the aim of preventing the fracture of beam-end welded connections in steel moment structures and improving the plastic deformation capacity of welded connections, a new structural design approach was proposed in the current research. A key technology in this approach is to increase the flange thickness of the beam ends using as beam flanges steel products with varied thicknesses that are produced by a variable-roll rolling mill (Fig. 1).