1. Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., Shanghai 200092, P.R. China; Institute of Advanced Studies, Tongji Univ., Shanghai 200092, P.R. China.
2. Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., Shanghai 200092, P.R. China; Institute of Photonics, Dept. of Mathematics and Physics, Leibniz Univ. Hannover, Appelstrasse 11, 30167 Hannover, Germany. ORCID: .
3. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, P.R. China.
4. Dept. of Geotechnical Engineering, College of Civil Engineering, Tongji Univ., Shanghai 200092, P.R. China (corresponding author).