A Problem of Piles Structural Reliability Analysis on the Stability Criterion in Permafrost Regions

Abstract

The increase in the rate of global warming directly affects the safety of buildings and structures on permafrost. The research presents the problem of reliability analysis for piles on permafrost soils by the stability criterion under the action of tangential forces of frost heaving. The two groups of piles reliability analysis methods are developed: for complete and limited statistical data about random variables in the models of limit states. Approximations of the dependences of the design resistances of permafrost soils to the shear along the freezing surface on the temperature are proposed. It can be used to estimate the freezing force that keeps the pile from buckling. The method for reliability monitoring and durability forecasting has been developed for piles on permafrost soils. The proposed method makes it possible to reasonably reduce the cost of reliability analysis in the initial periods, which can increase the number of buildings and structures being inspected by the similar costs.

Reline Jacket: Efficient Reduction of Frost-Heave Uplift of Piles in Warming Permafrost

“…Currently, this process is widely studied by various specialists, and one of its directions is focused on the pile foundation stability to The degrading permafrost loses its bearing capacity, which leads to damaging displacements of buildings and engineering structures [17,18]. Field observations from 1995 to 2007 revealed progressive active layer thickening [19], which continues to increase at 5 cm per year [20]. The mean annual temperature of the active layer was predicted to keep increasing in the future [21].…”