Numerical Study of Soil-Thawing Effect of Composite Piles Using GMsFEM

During construction works, it is advisable to prevent strong thawing and an increase in the moisture content of foundations engineering structures summer. Since density water ice differ, due difference bulging foundation sections can occur when freezes back winter. In this work, effect fiber-reinforced piles on thermal field surrounding soil investigated numerically; that is, study influence aggregates with high low thermal-physical properties temperature frozen soils conducted. Basalt steel fiber reinforcement are compared. The difficulty work inclusions inside too small compared pile itself. Therefore, solve Stefan problem, a generalized multiscale finite element method (GMsFEM) was used. GMsFEM, usual conforming partition domain into coarse grid It allowed reducing problem size and, consequently, accelerating calculations. Results solution were fine-scale solution, accuracy GMsFEM investigated, optimal parameters defined. shown be well suited for designated task. Collation basalt showed beneficial conductive material inclusion freezing