1. Visiting Researcher, Univ. of Houston, Houston, TX 77004; formerly, Research Assistant, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803 (corresponding author).
2. Edwin B. and Norma S. McNeil Distinguished Professor, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
3. Research Assistant, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.
4. Associate Professor, Dept. of Bridge Engineering, School of Transportation, Southeast Univ., Nanjing 210096, China.
5. Professor, School of Civil Engineering and Architecture, Changsha Univ. of Science and Technology, Changsha 410004, China; formerly, Visiting Scholar, Dept. of Civil and Environmental Engineering, Louisiana State Univ., Baton Rouge, LA 70803.