Seismic Design Methods for Steel Concentric Braced Frame: State-of-the-art Review

Due the unexpected failures during past earthquakes, the seismic design methods for civil structure evolved significantly in the last century. Especially the introduction of performance based design methods enhance the force-based design and also lead to the development of displacement based design concept in structural engineering. On this regards, this paper critically reviews the current design methods for steel concentric braced frame (CBF) structures. The review process focuses on variation in the design methods and assumptions made in each methods. Further, the comparison of performance of the structures design based on each methods are discussed.