1. School of Civil Engineering, Dalian University of Technology, Dalian 116024, China
2. Wuhan Center of China Geological Survey (Central South China Innovation Center for Geosciences), Wuhan 430205, China
3. Key Laboratory of High-Speed Railway Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, China
4. Institute of Geotechnical Engineering, Hebei University, Baoding 071000, China