J1010106 Combination of Horizontal and Vertical Seismic Excitation for Sloshing Behavior of Cylindrical Vessel

Excitation tests of cylindrical vessel containing liquid was conducted to confirm the sloshing behavior. We focused on two effects on sloshing behavior, (1) vertical excitation exceeding gravity acceleration, (2) tri-axial excitation. We confirmed that horizontal excitation was dominant compared to vertical one. The fact suggests that it is reasonable to consider horizontal excitation for the sloshing evaluation. Moreover, we compared the sloshing behavior under bi-axial (i.e. horizontal and vertical) and tri-axial excitation. The comparison suggests that the combination using SRSS (the square root of the sum of the squares) might be conservative to predict the sloshing response under tri-axial excitation by combining the sloshing response under each horizontal excitation.