1. School of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan, P.R. China
2. Institute of Shanxi Architectural Design and Research, Taiyuan, China
3. School of Civil Engineering, South West University, Chongqing, China
4. Department of Civil Engineering, Penn State Harrisburg, Middletown, PA, USA
5. Department of College English, Communication University of Shanxi, Taiyuan, China