Study on time effect of residual pressure and bearing characteristics of jacked pile in saturated silt foundation.

The history of stress in soil mass and pile surface roughness significantly impacts the time effect of residual pressure at the pile end and bearing characteristics of the jacked pile. In this study, the impacts of soil over-consolidation ratio and pile surface roughness on the time effect of residual pressure and bearing characteristics of jacked pile end in saturated silt foundation are explored. Through the independently developed model test device for the vertical bearing characteristics of jacked pile, the driving of jacked pile with different pile surface roughness and static load tests at different resting phases are carried out on saturated silt foundations with different over-consolidation ratios.