A hybrid passive control device for steel structures, I: Development and analysis

A hybrid passive control device (HPCD) consisting of a high-damping rubber damper in series with a buckling-restrained brace (BRB) provides an innovative method of reducing structural response during seismic events. Finite element models of the device were used to demonstrate the concept. The analytical models confirmed the expected phased behavior and energy dissipation capabilities. An incremental dynamic analysis was used to compare the seismic response of a special moment resisting frame (SMRF), a dual BRB–SMRF system, and a dual HPCD–SMRF system. The results demonstrate that the HPCD system has potential as a seismic protective system capable of meeting multiple performance requirements.