粘性ダンパーを付与した免震構造のエネルギーの釣合に基づく応答評価法

概要

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Recently, the seismic isolated building is recognized as the structure system having high reliability and performance under severe earthquake. And the response prediction method for the seismic isolated buildings with viscous damper based on energy balance theory is proposed by Akiyama. This method proposed by Akiyama adopts the same way as the design method for seismic resistant structures. In this method, it is assumed that the sum with vibration elastic energy of isolator and the plastic strain energy of damper is equal to a difference of input energy and damping energy of viscous damper. This paper is developed this method, and focused on the shear force of viscous damper supporting the earthquake force. The response prediction method is calculated as damping energy is included in the absorbing energy accumulated to structure. And optimum damping coefficient of viscous damper is calculated with the parameters of input energy and natural period. Then time history response analyses are carried out to verify the proposal method. Finally, summary of design method for the seismic isolated buildings with viscous damper is shown.
社団法人日本建築学会の論文
2005-02-28