1. Associate Professor, School of Civil Engineering, Dalian Univ. of Technology, Dalian, China 116024 (corresponding author).
2. Professor, Wind Science and Engineering Research Center, Texas Technology Univ., Lubbock, TX 79409.
3. Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
4. Professor, Dept. of Bridge Engineering, Tongji Univ., Shanghai, China 200092.