1. Ph.D. Candidate, Dept. of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
2. Research Associate, Chair, Foundation Engineering, Soil and Rock Mechanics, Ruhr-Universität Bochum, Universitätsstr.150, 44780 Bochum, Germany (corresponding author).
3. Professor, Dept. of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
4. Researcher, Dept. of Environment, Land and Infrastructure Engineering, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
5. Professor, Chair, Foundation Engineering, Soil and Rock Mechanics, Ruhr-Universität Bochum, Universitätsstr.150, 44780 Bochum, Germany.