1. Research Institute of Surface Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
2. Shanxi Key Laboratory of Material Strength and Structure Impact, Taiyuan University of Technology, Taiyuan 030024, P. R. China
3. Department of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
4. China United Northwest Institute for Engineering & Research, Xi’an 710082, P. R. China