Research on Uplift Bearing Capacity of Pile Foundation in Sandy Soil Area Under Cyclic Load
In order to analyze the uplift bearing characteristics of pile foundation in sandy soil area under cyclic load,the paper conducts tests on the bearing performance of pile foundation under cyclic load,and analyzes the influence of buried depth ratio,compacted degree and single and double circulation on the bearing performance of pile foundation.The results show that under high cyclic load ratio,the accumulated settle-ment of pile foundation increases rapidly with the increase of load times and then tends to be stable.Under the condition of bidirectional circu-lation,the cumulative settlement of pile foundation increases rapidly at first,then slowly and finally tends to be stable with the increase of load times,and the settlement is stable at 0.3 mm.Under unidirectional cyclic load,the cumulative settlement of pile foundation shows an approxi-mate linear increase with the increase of load times,and the maximum cumulative settlement in the area without platform is 0.15 mm.On the whole,the pile foundation settlement under unidirectional circulation is much lower than that under bidirectional circulation.
Cyclic loadAn area of sandy soilPile foundationUplift capacity
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