the article presents a comparison of methods for modeling the Foundation of the span structure of the technological transition on permafrost soils in the LIRA-CAD 2015 software package.Numerical simulations using methods such as pinching (linking) and modeling of pile Foundation and soil Foundation showed a significant difference in the calculated values. The conducted research confirms the need to calculate this type of building structures taking into account the influence of the soil base.

Keywords: span structure, technological transition, pile, base, foundation, frozen ground, LIRA-CAD 2015, strength, stiffness, stability, soil model