サイロ容器の地震時の履歴復元力特性を考慮した非線形振動応答解析手法に関する研究 : 変位振幅及び周波数に依存する復元力特性を持つサイロの振動解析と振動実験

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We studied a new restoring force model encompassing post-buckling for rational seismic design, and investigated a new analytical method for accurate calculation of dynamic behavior in earthquake using this model. Until now, we have calculated vibration responses from a static hysteresis loop relating to vibration characteristics (stiffness, damping) of the structure. However, restoring force tests clarified that the restoring force characteristics of silos are greatly influenced by not only amplitude of displacement but also response frequency. In this paper, we propose a new analytical model that .considers these vibration characteristics of silos, and verify the validity and accuracy of this new analytical method by shaking table tests. In the future, this new analytical model and method will enable calculation of more reliable structure's specific coefficients of silos.
2004-01-30