Ground Movement during Concrete Pipe Piles Jacking in Silt Deposit

Abstract

In this study a comprehensive field test program was carried out to closely monitor the ground responses during open-ended concrete pipe piles jacking into a deposit mainly consisting of silt soils. The horizontal soil movement due to pile jacking was of depth-dependent characteristic that cylindrical cavity expansion models were unable to capture. The magnitude of displacement decreased rapidly with depth, and no discernible deflection was measured below the depth of the pile tip. The maximum displacement along the depth occurred at clayey-silt layer with relative lower permeability. The rebound of soil movement may be attributed to the setup effect following the piling stage.