High-performance finite element and coupled Eulerian-Lagrangian simulations of pile installation processes

摘要

In recent years, several researchers used the finite element method to simulate the pile drivingrnprocess. These simulations lead to a better understanding of the influence of pile installation on the surroundingrnsoil and adjacent structures. Even the mechanisms of soil plugging depending on the installation method canrnbe investigated. An explicit time integration scheme implemented in Abaqus/Explicit is used. The soil body isrndiscretised using a hypoplastic constitutive law. Regarding these analyses, the capabilities and limitations ofrnfinite element method in context with pile installation process simulations are discussed.rnIn Abaqus,Version 6.8 and 6.8-EF a Coupled Eulerian-Lagrangian (CEL) approach is implemented to investigaternproblems involving large deformations. This approach is used to simulate the pile installation process,rntoo, to overcome limitations of the afore described finite element simulations. The results are compared to thosernreceived with finite element method to show the potential of CEL in geotechnical engineering.