Abstract
An experimental study was performed on the simple technique for upgrading the seismic performance of a rectangular water tank. To apply the filter installation which can decrease the sloshing wave to an exsiting tank, the effects of filter installation method and position on the damping of sloshing wave were exexamined. A model tank and two real scale cubic tanks with 3000 and 2000 mm were shaked, and the maximum wave heights were measured.
The methods of filter installation damping of sloshing wave were obatained from the model tank, and these were found to be effective for the real scale tanks. The optimum position of filter installation was obtained corresponding to the filter number. The present filter installation was very effective for decreasing the sloshing wave and kinematic pressure at the long period earthquake, but it could not surpress the kinetic pressure derived by the bulging at the short period earthquake.
