1. Lecturer, School of Civil Engineering, Changsha Univ. of Science and Technology, No. 960 Wanjiali Rd., Changsha, Hunan 410114, China; Doctoral Student, Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux, Université de Lorraine, Ile du Saulcy, 57045 Metz Cedex 01, France.
2. Professor, School of Civil Engineering, Changsha Univ. of Science and Technology, No. 960 Wanjiali Rd., Changsha, Hunan 410114, China (corresponding author).
3. Associate Professor, Laboratoire d’Etude des Microstructures et de Mécanique des Matériaux, Université de Lorraine, Ile du Saulcy, 57045 Metz Cedex 01, France.
4. Professor, School of Civil Engineering, Changsha Univ. of Science and Technology, No. 960 Wanjiali Rd., Changsha, Hunan 410114, China.
5. Lecturer, College of Civil Engineering and Mechanics, Xiangtan Univ., Yuhu District, Xiangtan, Hunan 411105, China.
6. Associate Professor, School of Civil Engineering, Changsha Univ. of Science and Technology, No. 960 Wanjiali Rd., Changsha, Hunan 410114, China.