Alternative methods for foundation the circular tank in fine-grained soils

Foundations on unbearable and yielding subsoil require such actions as to achieve both desired bearing capacity and limited settlement. Issue is presented at foundation the circular tank in saturated fine-grained soils, circular tank in Klobouky u Brna in particular. Comparison analysis is performed for alternative methods (shallow foundation, vibro stone columns, deep soil mixing, pile foundation). Differential and total settlement, time-depending analysis and baseplate stress state (bending moment, shear force) are assessed for each alternative. Pile foundation provides the best results regarding total and differential settlement, but baseplate is also under high puncture shear stress. Vibro stone columns seem suitable due to time-depending analysis of settlement, on the other hand settlement reductions are not just as good. Deep soil mixing provides satisfactory alternative for both pile foundation and vibro stone columns. Under such circumstances shallow foundation is not suitable