Rectangular reinforced concrete tank loaded by seismic load

Abstract

Tanks have currently been used for storage of different substances and products. Most often they serve as reservoirs for drinking water, for wastewater treatment and storage of various technical liquids. Rectangular tanks are less common, still there are many benefits of their using, e.g. lower sensitivity to unilateral load and better use of space mainly in systems of multiple tanks. The rectangular tank analyzed in this article is filled with water. Our investigation is focused on dynamic analysis of the tank. The tank was loaded by accelerogram of a natural earthquake. Step-by-step method was used for the calculation. The model was created using ANSYS Academic software, which is based on the Finite Element Method (FEM). The particular calculation was performed using the transient analysis. A time course of displacements and accelerations of each point of a structure has been obtained. The state of stress in walls during the period of maximum displacements has been presented.