Soil displacements around jacked group piles based on construction sequence and compacting effects

According to the strain path method and source-sink method,the closed-form analytical expressions of displacement fields due to the presence of adjacent piles were obtained.Based on the analytical expressions of singe pile and Lagrange interpolating function,the closed-form analytical expressions of displacement fields of soil around jacked group piles were derived.The solution taking into consideration construction sequence and compacting effects was in accordance with the practical engineering.And the solution could be reduced to simplified solution without consideration of construction sequence and compacting effects.Displacement fields of soil around group piles were analyzed by the solution.It was shown that the displacement of frontal surface was larger and that of dorsal surface was smaller with consideration of construction sequence and compacting effects.