1. Master Student, Geotechnical and Structural Engineering Research Center, Shandong Univ., Jinan 250061, China.
2. Professor, Geotechnical and Structural Engineering Research Center, Shandong Univ., Jinan 250061, China (corresponding author).
3. Associate Professor, Geotechnical and Structural Engineering Research Center, Shandong Univ., Jinan 250061, China.