1. Assistant Professor, School of Transportation Science and Engineering, Beihang Univ., Beijing 100191, People’s Republic of China; formerly, Graduate Student, State Key Laboratory of Hydroscience and Engineering, Tsinghua Univ., Beijing 100084, People’s Republic of China (corresponding author).
2. Professor, Institute of Geotechnical Engineering, School of Civil Engineering, Tsinghua Univ., Beijing 100084, People’s Republic of China; and State Key Laboratory of Hydroscience and Engineering, School of Civil Engineering, Tsinghua Univ., Beijing 100084, People’s Republic of China.
3. Graduate Student, State Key Laboratory of Hydroscience and Engineering, School of Civil Engineering, Tsinghua Univ., Beijing 100084, People’s Republic of China.
4. Associate Professor, State Key Laboratory of Hydroscience and Engineering, School of Civil Engineering, Tsinghua Univ., Beijing 100084, People’s Republic of China.