LAUSR

Abstract The implementation of an elastoviscoplastic three-dimensional model (EVP3D) with the finite difference method is presented using the Flac3D analysis platform. This numerical model allows the time-dependent stress-strain behavior of soil to be studied while incorporating its viscous characteristics. An algorithm for solving the constitutive equations is developed and programmed using the centered finite difference method varying in time. The historical case of the construction of Tarsuit Island in the Beaufort Sea in the Arctic Ocean is studied to calibrate and validate the model. A finite difference model that represents the construction stages is developed, and the short- and long-term behaviors are obtained. The model was calibrated and validated with the data record from an electric piezometer that was installed in the foundation of the artificial island, and the results of the algorithm are compared with the recorded data. The results are satisfactory and comparable to the measurements that were recorded for a year on the island, which demonstrates the applicability and validity of the model and its constitutive hypotheses.