Assessment of the Subsurface Fire-Fighting System Pipeline Impact on the Tank Stress State During the Foundation Settlement

Abstract

The paper objective is to conduct a numerical study of the subsurface fire-fighting system pipeline impact on the structure stress-strain state during the tank settlement. The numerical simulation of the subsurface fire-fighting system pipeline was performed on the basis of the previously designed vertical steel tank model. The PC ANSYS finite element software complex was used to calculate the deformation of the tank structures during the foundation settlement. The values of the obtained stress results indicate that when the vertical steel tank settlement is 20 cm, the equivalent stresses in the wall do not exceed 30 MPa. The paper presents the proposals for possible use of compensating devices for small-diameter technological pipelines in order to minimize the risks of destruction in case of the tank foundation settlement.