Abstract
The simulation of the installation of open-ended piles using a Coupled Eulerian-Lagrangian method in conjunction with two sophisticated constitutive soil models, Sanisand and Hypoplasticity with intergranular strain extension, is presented. Insights into the requirements of numerically stable and efficient implementations of the constitutive models are provided. Following its installation, the response of the pile to lateral loading is investigated and the numerical results are compared to results of model tests. Sanisand is found to be superior in terms of computational performance for the simulation of the pile installation but predicts the pile response to lateral loading following the installation process worse compared to the simulations using Hypoplasticity. The installation-induced changes in the soil state have less influence on the lateral pile response in case of the simulations using Sanisand. It is concluded that both constitutive models are suitable to study large-deformation pile installation processes but the results can differ significantly between the constitutive models despite a careful calibration of the material constants.
Published Version
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