Large-deformation analysis of pile installation with subsequent lateral loading: Sanisand vs. Hypoplasticity. Issue 151 (December 2021)

• Record Type: Journal Article
• Authors: Staubach, Patrick; Machaček, Jan; Wichtmann, Torsten
• Is Part Of: Soil dynamics and earthquake engineering. Issue 151(2021)
• Publication Date: 2021-12
• Subjects: Pile driving -- Large-deformation -- Sanisand -- Hypoplasticity -- Coupled Eulerian-Lagrangian -- Lateral loading; Soil dynamics -- Periodicals; Earthquake engineering -- Periodicals; Sols -- Dynamique -- Périodiques; Génie parasismique -- Périodiques; 624.176205
• DOI: 10.1016/j.soildyn.2021.106964
• Languages: English
• ISSNs: 0267-7261

Abstract

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. Highlights: Notes about the implementation of Hypoplasticity and Sanisand for large-deformation analyses are made. Both constitutive models are applied for the simulation of pile installation using a Coupled Eulerian-Lagrangian method. The lateral loading of the pile following the installation process is investigated. A large influence of the pile installation process on the response to lateral loading is found using Hypoplasticity. Sanisand predicts less influence of the pile installation process on the lateral loading behaviour.