9/23/2023 0 Comments En 14015 calculationAdvanced analyses of the influence of the soil settlement of tank bottoms on the state of their and shells’ stresses are included in the doctoral thesis. There are known cases of steel tank bottom failures, in which excessive or non-uniform deformation of the sand foundation inside the ring foundation, occurred. This settlement can have different causes, but in each case, affects the state of stress and deformation in the bottom plates and at the lower edge of the cylindrical shell. During long-term operation of the tanks, the soil under the steel bottom of the tank undergoes permanent deformations in the form of vertical non-uniform settlement. In such tanks, sometimes ground-layered foundations are used, and much more often, ring-shaped reinforced concrete foundations with compacted gravel-sand substrate inside these rings. Vertical cylindrical steel tanks for the storage of liquids use different types of foundations.
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