Abstract
This paper proposes a seismic peak response evaluation method for slip-hysteretic structure having a viscous or viscoelastic damper. Formulations to estimate equivalent vibration period and equivalent damping ratio of the slip-hysteretic structure subjected to random excitation are presented. The peak response evaluation method is based on equivalent linearization as well as spectrum modification and reduction, reflecting increase in equivalent vibration period and equivalent damping ratio. Accuracy of the evaluation method is validated through numerous time history analyses, over a wide range of viscous damping ratio, elastic vibration period, post-yield stiffness, slip strength ratio, ductility ratio, and earthquake type.
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