1. Ph.D. Candidate, School of Mechanics and Civil Engineering, China Univ. of Mining and Technology, Xuzhou 221116, China; Associate Professor, Dept. of Civil Engineering, North China Institute of Science and Technology, Langfang 065201, China.
2. Professor, School of Mechanics and Civil Engineering, China Univ. of Mining and Technology, Xuzhou 221116, China (corresponding author).
3. Associate Professor, School of Civil Engineering and Architecture, Zhejiang Sci-Tech Univ., Hangzhou 310018, China.
4. Senior Lecturer, School of Civil Engineering and Built Environment, Queensland Univ. of Technology, Brisbane, QLD 4001, Australia.