1. Post Doctoral Fellow, Dept. of Civil and Transport Engineering, Norwegian Univ. of Science and Technology, Trondheim 7491, Norway (corresponding author).
2. Associate Professor, Dept. of Civil and Transport Engineering, Norwegian Univ. of Science and Technology, Trondheim 7491, Norway.
3. Ph.D. Candidate, Dept. of Civil and Transport Engineering, Norwegian Univ. of Science and Technology, Trondheim 7491, Norway.