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Studying of the wall cylindrical rigidity influence on the stress-strain state of the tank during local settlement

The article numerically researched the stress-strain state of the tank RVS-20000 at the settlement zone is located near the tank wall. A numerical model of the tank was developed in accordance with the actual geometric dimensions, taking into account all structural elements of the structure and the maximum operating loads. When modeling local settlement to account for the spatial work of the soil, the model of the Pasternak soil base was used. The stress-strain state calculation of the tank was performed at values of the radius of the drawdown zone from 1 to 10 m. The choice of this interval is due to the fact that in more than 92 % of cases, tanks with local bottom settlements fall within this range of values.The dependences of the maximum acting stresses in the wall of the internal combustion engine on the position of the inhomogeneity area in the soil base are established. The boundary of the zone of action of the edge effect from the tank wall is established. If the center of the heterogeneity area is located in this zone, it is necessary to conduct additional analysis of the tank metal structures stress-strain state when assigning the maximum settlement.