1. Associate Professor, Geotechnical and Structural Engineering Research Center, Shandong Univ., #17923, Jingshi Rd., Jinan, Shandong 250061, China (corresponding author).
2. Assistant Professor, Dept. of Engineering Mechanics, Shandong Univ., Jinan, Shandong 250061, China.
3. Professor, Geotechnical and Structural Engineering Research Center, Shandong Univ., Jinan, Shandong 250061, China.
4. M.S. Student, Geotechnical and Structural Engineering Research Center, Shandong Univ., Jinan, Shandong 250061, China.