Seismic Design of Steel Concentrically Braced Frame System with Self-Centering Friction Damping Braces

Abstract eng:
This paper concerns the seismic design procedure for a new type of steel concentrically braced frame system with a special type of bracing element termed self-centering friction damping brace (SFDB). This new seismic resistant system demonstrates a few desirable characteristics such as minimal residual drift and potential to be damage free after frequent and design basis earthquakes. A displacement-based design (DBD) approach using inelastic design spectra is adopted for the design of SFDB frame. Two design examples using the proposed design approach are presented in this study. The statistical responses indicate that the SFDB frames can achieve their target performance, and that SFDB frame has the potential to withstand several design level earthquakes without the need for repair or replacement of SFDBs if properly designed.

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