1. Postdoctoral Researcher, Dept. of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA 24061 (corresponding author).
2. Professor, Dept. of Civil Engineering, Aalborg Univ., Sofiendalsvej 9200 Aalborg, Denmark.
3. Researcher in Civil Engineering, Babol Univ. of Technology, Babol 47148-71167, Mazandaran, Iran.
4. Researcher in Civil Engineering, Cowi A/S, 9000 Aalborg, Denmark.