Successful project application "Refrozen” within the ANR-DFG funding program
Together with colleagues from the ENPC (École Nationale des Ponts et Chaussées) in Paris, GUT has successfully submitted the project
Refrozen: Frozen Soils from the Micro to the Macro Level: New insights, data basis and numerical methods".
within the framework of the funding of integrated French-German research projects by the French Agence Nationale de la Recherche (ANR) and the Deutsche Forschungsgemeinschaft (DFG).
In this project, the behavior of -both naturally and artificially- frozen soils will be investigated from the micro to the particle and the macro level. For this purpose, state-of-the-art MRI and μCT imaging technologies will be used to generate a comprehensive data set for frozen soils under different temperature and loading regimes at the particle level. The results will be compared with element test experiments conducted in the frost laboratory at GUT.
The new database will be used to develop and validate new constitutive laws implemented into numerical methods. These will include finite element models using multiscale and poro-mechanical approaches as well as physics informed neural networks (PINNs). With the final step to macroscale, the newly developed techniques will be calibrated: on the one hand, on a controlled physical model in the lab and, on the other hand, on two real case studies.
The investigations will result in a unique database providing new insights into the behaviour of frozen soils at an unprecedented level of detail (particle level), and also develop novel numerical calculation approaches.
The project has a duration of three years, GUT is funded by the DFG with 450.000,-€. Together with the funding for the French partners, the total volume amounts to slightly more than 800,000 €.