1. Institute of Geotechnical Engineering; University of Natural Resources and Life Sciences; Vienna 1180 Austria
2. Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education, Department of Geotechnical Engineering, College of Civil Engineering; Tongji University; Shanghai 200092 China
3. Ecole Centrale de Nantes, GeM UMR CNRS; LUNAM University; Nantes 6183 France
4. Department of Civil and Environmental Engineering; The Hong Kong Polytechnic University; Hung Hom, Kowloon Hong Kong