Seismic Behavior and Design of Concentrically Braced Steel Frames

This paper describes the main characteristics of the inelastic seismic response of concentrically braced steel frames. Current Canadian and U.S. provisions for the seismic design of these structures are presented and discussed, together with possible modifications that are currently being considered in view of recent research findings. Alternative bracing systems, which have been proposed over the years to improve the seismic response of concentrically braced steel frames, are also briefly described.