1. Deceased; formerly, Professor, School of Civil and Structural Engineering, Taiyuan Univ. of Technology, Taiyuan, Shanxi Province 030024, P.R.C.
2. Senior Engineer, School of Civil and Structural Engineering, Taiyuan Univ. of Technology, Taiyuan, Shanxi Province 030024, P.R.C.
3. Associate Professor, School of Civil and Structural Engineering, Taiyuan Univ. of Technology, Taiyuan, Shanxi Province 030024, P.R.C.
4. Reader, School of Mechanical, Aerospace and Civil Engineering, The Univ. of Manchester, P.O. Box 88, Manchester M60 1QD, U.K. (corresponding author).
5. Senior Lecturer, School of Mechanical, Aerospace and Civil Engineering, The Univ. of Manchester, P.O. Box 88, Manchester M60 1QD, U.K.