1. Ph.D. Candidate, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, Changsha 410114, China.
2. Professor, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, Changsha 410114, China (corresponding author).
3. Professor, School of Civil Engineering and Architecture, Changsha Univ. Science and Technology, Changsha 410114, China.
4. Associated Professor, School for Engineering of Matter, Transport and Energy, Arizona State Univ., Tempe, AZ 85281.