1. Soil Mechanics, Foundation Engineering and Environmental Geotechnics, Ruhr-Universität Bochum, Universitätsstr. 150, Bochum, NRW 44801, Germany (Corresponding author), e-mail: florian.christ@rub.de, https://orcid.org/0000-0003-1340-1439
2. Soil Mechanics, Foundation Engineering and Environmental Geotechnics, Ruhr-Universität Bochum, Universitätsstr. 150, Bochum, NRW 44801, Germany