Simulation of Auger Displacement Pile Installation

摘要

Auger displacement piles have been used throughout the piling industry in Australia and worldwide forrndecades as foundation elements for structures and embankments. The majority of auger displacementrnpiling is carried out in fine-grained soils, with the potential for damage to already completed piles, asrnwell as to adjacent structures. The behaviour of the soil surrounding the auger during penetration,rnextraction and concrete pumping is simulated using the Finite Element Method, with the soil describedrnby different constitutive models, including the hypo-plastic model. The paper identifies the parametersrninvolved, describes the numerical model, and presents the displacement field, stress field, and porernwater pressure distribution obtained. The results provide a prediction for field tests that will be carriedrnout in the near future.