大型円筒縦型貯槽の液面動揺波高の地震記録と解析の比較

抄録

This paper deals with the practical applicability of a calculation method which can be used to predict liquid-surface displacement during an earthquake. We took measurements of the sloshing of huge cylindrical tanks and then compared our calculated values with actual earthquake records. This calculation method is based on the linear potential theory. The earthquake records of LNG or petroleum storage tanks are used for the comparison. When the liquid-surface displacements are small, the calculated natural periods and liquid-surface displacements agree with the recorded figures. But as the liquid-surface displacements become larger, the recorded values become larger than the calculated ones by reason of a non-linear response. The recorded values become 0.84 to 1.12 times as large as the calculated ones.