Modelling Frost Heave of Small Piles

This research investigates the mechanics of frost heave and its influence on small piles. Frost heave, which results in the upward movement and deformation of the ground surface due to freezing temperatures penetrating the soil is a critical concern in cold climate regions. The study examines various methods for predicting frost heave and pile-soil interaction, encompassing empirical, analytical, and numerical approaches. It was found that there are advantages of centrifuge modeling, allowing researchers to replicate freezing and thawing processes at a reduced scale, thus providing dependable data for investigating deformation and failure mechanisms and ultimately pile behavior. Moreover, the work found significance of accurately estimating the depth of freezing and resulting frost heave to design physical model tests. The work revealed scaling conflicts and the necessity for further validation of predictive methods to establish reliable pile design approaches for frost heave resistance.