SEISMIC RESPONSE EVALUTION CONSIDERING SEISMICALLY ISOLATED BRIDGES USING BI-LINEAR DOUBLE TARGET MODEL

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  • バイリニア型Double Targetモデルを用いた免震橋の地震応答評価

Description

Experienced shear strain dependency of high damping rubber bearing which is induced by Mullins effect of rubber is one of the influential dependency to dynamic response of the bridge. So the effect of experienced shear strain dependency on seismic responce of isolation structure should be evaluated. From past studies, loading history must be taken into account to evaluate characteristics of high damping rubber. In this research, bi-linear double target model are investigated considering the experienced shear strain dependency. From seismic responce analysis, the effect of experienced shear strain dependency on seismic response was made clear. And proposed model was compared with normal bi-linear model.

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