1. Professor, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, No. 960, Section 2 of Wanjiali South Rd., Changsha, Hunan 410114, China.
2. Ph.D. Student, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, No. 960, Section 2 of Wanjiali South Rd., Changsha, Hunan 410114, China (corresponding author).
3. Ph.D. Student, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, No. 960, Section 2 of Wanjiali South Rd., Changsha, Hunan 410114, China.
4. Associate Professor, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, No. 960, Section 2 of Wanjiali South Rd., Changsha, Hunan 410114, China.