1. School of Civil Engineering, Hefei University of Technology, Hefei, P.R. China
2. Anhui Civil Engineering Structures and Materials Laboratory, Hefei, P.R. China
3. Management Training Center, State Grid Jiangsu Electric Power Co., Ltd., Wuxi, P.R. China
4. School of Civil Engineering and Architecture, Ningbo Institute of Technology, Zhejiang University, Ningbo, P.R. China