Dimensionamento e análise comparativa de fundações profundas de silo metálico de fundo plano: estudo de caso

Abstract

The present study is linked to the area of foundation engineering, and has the objective of comparing models of deep foundations for the base of a metallic silo with flat bottom, located in the region of Chopinzinho - PR. For the calculations the methods of Décourt and Quaresma (1978) and Aoki and Velloso (1975) were used, always opting for the most conservative. At the end the types of foundations were compared technically and economically, concluding which is the most suitable method for the chosen enterprise. After the dimensioning of the foundation by the three executive methods, the mechanized excavated pile would not be the most indicated and technically feasible due to the presence of water, which would make its full execution difficult. The other two methods, continuous flight auger and precast piles, are considered technically feasible. The price comparison between the SINAPI Table (2022) and the prices researched in companies in the region showed a difference within the expected for the bored piles and continuous flight auger piles. The only difference was for the precast piles, which had particularities in the SINAPI Table (2022), resulting in a value well below the market value. It can be concluded that the analyzed pile design, with the loads increased and properly considered, was correctly dimensioned and that the choice for continuous flight auger piles is technically and economically feasible.