1. Postdoctoral Research Associate, College of Civil Engineering and Architecture, Zhejiang Univ., Hangzhou, Zhejiang 310058, China.
2. Professor, Griffith School of Engineering, Griffith Univ., Gold Coast Campus, Queensland, QLD 4222, Australia (corresponding author).
3. Lecturer, National Engineering Laboratory for High Speed Railway Construction, School of Civil Engineering, Central South Univ., Changsha, Hunan 410075, China.