Modeling a reverse taper pile for frost heave conditions

Abstract

The research addresses the issue mathematical modeling of effective pile for construction in cold regions on the base of existing experimental studies. The problem of piles uplift by frost heave is critical and results in damage to overlying structures. Previous research and practice has shown that the existing methods of frost heave protection involving pile length extension lead to piles cost increase. It is assumed that a novel approach to the piles design is needed. The paper proposes directional reducing the influence of heaving soil on the reverse taper pile due to pile design features without its length extension. Positive effects which arise in this connection have been studied. The devised approach was based on mathematical modeling techniques. Heaving soil-pile interaction model has been developed. The study conducts an investigation of the pile frost heaving phenomenon that occurs in the annular space surrounding the pile. Particular attention has been given to working out pile geometry equations. It is concluded that the pile geometrical features developed by the devised mathematical modeling techniques allow to effectively reducing the frost heave influence. We can foresee that the research findings and the approach implementation will entail the reduction of construction costs in cold environments.