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.

介绍了使用耦合欧拉-拉格朗日方法结合两个复杂的本构土模型 Sanisand 和具有晶间应变扩展的低塑性模型来模拟开口桩的安装。深入了解本构模型的数值稳定和有效实现的要求。安装后，研究了桩对侧向载荷的响应，并将数值结果与模型试验结果进行了比较。Sanisand 被发现在模拟桩安装的计算性能方面是优越的，但与使用 Hypoplasticity 的模拟相比，预测安装过程后桩对横向载荷的响应更差。在使用 Sanisand 进行模拟的情况下，安装引起的土壤状态变化对横向桩响应的影响较小。得出的结论是，两种本构模型都适用于研究大变形桩的安装过程，但尽管仔细校准了材料常数，但本构模型之间的结果可能存在显着差异。