INVESTIGATION OF SETTLEMENT OF METAL SILOS FOUNDATION SLABS IN A SINGLE-ROW ARRANGEMENT AND MODELING OF THEIR LOADING OPTIONS

Abstract

An analysis of the grain storage elevators construction, in particular construction of metal silos, was carried out. Cyclic loading/unloading and dynamic effects on the structures of metal silos and foundations during such processes are characteristic features of the operation of silos. The analysis of mathematical models of the soil base, which are most often used for modeling the "soil-foundation-structure" system, as well as their application in numerical simulation of the structures operation taking into account their interaction with the soil, is presented. The use of the linear-deformation semi-space method is justified for the calculation of foundation slabs for metal silos. In this case, the computer model of the base is created using the soil bed coefficients C₁ and C₂. This model was chosen taking into account the homogeneity of the soils under the foundation slab and the constant thickness of the soil layers, as well as the possibility of taking into account the spatial operation of the soil and the mutual influence of the foundation slabs in this model. Using computer modeling in the "LIRA" software complex, a study of the settlement of a single foundation slab in single-row arrangement was carried out. It was established that the isofields of settlement differ significantly for the specified cases. The peculiarities of the settlement of foundation slabs depending on their number and position in a row have been established. It is noted that the largest tilts have furthest foundations or those located closest to the unloaded silos.