Dynamic Responses of a Pile with a Cap under the Freezing and Thawing Processes of a Saturated Porous Media Considering Slippage between Pile and Soil

The freezing/thawing stratification effect of seasonal factors or artificial disturbances in frozen soil regions has an important influence on the vertical vibration pile–soil–cap system. Taking into account slippage between pile and soil, a simplified layered analytical model system double-layered stratum under freezing thawing processes saturated porous medium was established, solution dynamic response top cap obtained. In this model, media Biot’s theory were used to simulate unfrozen respectively. validation first verified by comparison with results existing tests. This followed test self-made, ground-freezing experimental tests processes, present is further verified. A comprehensive parametric study reveals that parameters thawed layer have significant effects amplitude–frequency curve foundation.