Effects of Friction Damper-brace Design Parameters on Seismic Performance of Multistory Building Structures

摘要

In this study, design parameters of Friction Damper-Brace System (FDBS) and their influence on seismic response of low-to-medium-rise building structures are investigated. Numerical analyses are performed on some example building models with different fundamental periods. Improvement of seismic response of the structures with respect to variations of FDBS design parameters including: total slip-load ratio of friction damper devices (FDD), number of FDD installations and arrangement of dampers along height of buildings, is investigated. Results show that for a constant stiffness ratio of the braces and uniform distribution of slip-load ratio amongst FDDs, optimal normalized number of FDD installations, increases or remains invariant in the range of 0.5 to 1.0 when fundamental period of the structure increases.