ABSTRACT
Self-centering metallic energy-dissipating (SC-MED) structures, featured with trilinear flag-shaped hysteresis, demonstrate favorable seismic behavior under medium-to-severe earthquakes. In spite of its excellent performance, the full resilience of SC-MED structures can only be realized using a reliable design procedure considering its special hysteresis. A non-iterative direct displacement-based design (DDBD) procedure was proposed, on the basis of the relationship between the strength reduction factor and the nonlinear displacement ratio (the R-C R relation), considering trilinear hysteresis, i.e., the R-C R DDBD. This chapter deals with an example of this procedure in a three-story self-centering buckling-restrained steel frame (SC-BRBF) under MCE level earthquakes in Los Angeles. Elements at each story are identical to their counterparts at other stories. The objective drift ratio is selected such that the frame elements remain elastic. The result is satisfactory regarding the roof drift ratio and inter-story drift ratio.
