ENERGY BALANCE-BASED SEISMIC RESPONSE PREDICTION METHOD FOR STEEL STRUCTURE CONSIDERING EFFECTIVE HYSTERETIC DAMPER DEFORMATION

Abstract

The structural-seismic safety is evaluated by the amount of plasticity energy. The prediction method based on energy balance has been established, and this method is founded on simplified shear spring model. In case of the vibration control structure having the hysteretic dampers, the shear spring model excessively evaluates the efficiency of the vibration control of the dampers because the effective damper deformation is not considered.
In this paper, the shear spring model considering the effective deformation of the hysteretic damper is made by connecting the series spring to the damper. This series spring can be obtained without the push-over analysis of the material model. In addition, the prediction method based on energy balance considering the effective damper deformation is proposed.