1. Key Laboratory of Soft Soil Engineering Character and Engineering Environment of Tianjin, Tianjin Chengjian Univ., Tianjin 300384, China.
2. School of Infrastructure Engineering, Dalian Univ. of Technology, Dalian 116024, China.
3. School of Civil Engineering, Tianjin Univ., Tianjin 300372, China.
4. Key Laboratory of Soft Soil Engineering Character and Engineering Environment of Tianjin, Tianjin Chengjian Univ., Tianjin 300384, China (corresponding author).
5. College of Civil and Architecture Engineering, Chuzhou Univ., Chuzhou City, Anhui Province 239099, China.
6. School of Mechanical Engineering, Nanjing Univ. of Science and Technology, Nanjing City, Jiangsu Province 210094, China.