A review of the literature on the underground (buried) storage tanks

The main objective of fluid storage tanks construction is to construct safe and low-cost storage tanks which are resistant against earthquake. But in the computer design methods for the design of low cost and high performance storage tanks, little attention has been paid to development of quantities. In this study, first the underground tanks were compared to non-underground storage tanks and the results showed that underground tanks had better performance in terms of maximum displacement and stress against their wall. Afterwards, the impact of changes made in the underground tanks through the depth of underground tank, the type of soil around the tank, the distribution of dynamic pressure by different fluids, the impact of water depth on the tank frequency, and ratio of length to height on frequency of the tank, was investigated. The results of this study suggest that any increase in the tank depth leads to an increase of the tension and displacement and with softer soil around the tank more critical results will be achieved. In addition, the fluid dynamic pressure distribution is strongly linked to the specific weight of the fluid. With any rise in the water level of the tank or increase of length to height ratio, the frequency of the tank is reduced.