This article analyzes the frozen soil foundation under typical unfavorable geological conditions,clarifies the form of pile foundation under frozen soil foundation,and based on the stress distribution of pile foundation,provides the optimal selection of pile foundation.The results indicate that the displacement of pile foundation is greater during the thawing process,which is more dangerous compared to the frozen soil process.The form of cone column+straight col-umn+bottom plate foundation has smaller displacement and can bear larger loads in adverse geological environments of frozen soil,making this type of foundation more practical.
adverse geologyfrozen soil environmentpile foundationfinite element modelselection opti-mization