1. College of Civil Engineering, Fuzhou Univ., Fuzhou, PR China; School of Advanced Manufacturing, Fuzhou Univ., Quanzhou, PR China (corresponding author).
2. School of Advanced Manufacturing, Fuzhou Univ., Quanzhou, PR China.
3. College of Civil Engineering, Fuzhou Univ., Fuzhou, PR China.
4. Dept. of Road and Railway Engineering, Beijing Univ. of Technology, Beijing, PR China.