1. Department of Soil Mechanics, Foundation Engineering and Environmental Geotechnics, Ruhr-University Bochum, Universitätsstraße 150, Bochum 44801, Germany (Corresponding author), e-mail: achim.vonblumenthal@rub.de, https://orcid.org/0000-0002-0840-4064
2. Department of Soil Mechanics, Foundation Engineering and Environmental Geotechnics, Ruhr-University Bochum, Universitätsstraße 150, Bochum 44801, Germany, https://orcid.org/0000-0001-9422-5005 (W.L.) https://orcid.org/0000-0002-8440-4509 (D.K.) https://orcid.org/0000-0002-9250-7014 (T.W.)