減衰の振幅依存性を有する橋脚模型の振動挙動の再現解析の試み

抄録

In this research, we conduct the shaking table test by employing two types of steel pier models and investigate the amplitude dependency of dynamic properties of the models during free vibration behavior. We also confirm the elastic dynamic behavior of the pier models under an earthquake motion. Furthermore, we construct the analytical model including the amplitude dependency damping and make an attempt to reproduce the free and forced vibration behaviors of the pier model. As a result, the dynamic behavior of the model is successfully reproduced by employing the analytical model with nonlinear rotational spring at its pier base.