SEISMIC RESPONSE OF LARGE UNDERGROUND PURIFICATION RESERVOIR INDUCED BY EARTHQUAKE MOTION IN THE SHORT-AXIS DIRECTION

Abstract

The facilitation of a water supply is important to human life. So, the maintenance of a reliable water supply function during earthquake is strongly required. From such necessity, we studied the seismic response of a large underground purification reservoir by 3D dynamic analysis. As a result, it became clear that the stresses by earthquake motion will concentrate in the connections at the top of middle pillars inside the reservoir. In order to evaluate the seismic performance accurately, it is necessary to faithfully analyze the middle pillars according to the actual shape and arrangement.