ABSTRACT
The paper reviews the current status of research and development in seismic performance of steel structures based on a hierarchical framework linking local to global ductility, with special reference to criteria for local ductility supply. Work on section curvature ductility evaluation based on local buckling criteria is discussed and related to member plastic hinge length and deflection ductility. Recent work on connections; rigid, semi-rigid and composite, is highlighted and its potential in supplying high overall energy dissipation is discussed. The paper concludes with suggestions regarding future developments that would enhance the use of steel structures in seismic design. Keywords: Local Ductility, Curvature, Rotation and Displacement Ductility, Local Buckling, Connections, Hysteretic Behaviour, Capacity Design.
