1. Graduate Student, School of Civil and Environmental Engineering, Yonsei Univ., 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea.
2. Ph.D. Candidate, School of Civil and Environmental Engineering, Yonsei Univ., 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea.
3. Postdoctoral Research Fellow, School of Civil and Environmental Engineering, Yonsei Univ., 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea; Research Associate, Dept. of Construction Science, Texas A&M Univ., 400 Bizzell St., College Station, TX 77843.
4. Professor, School of Civil and Environmental Engineering, Yonsei Univ., Seoul 03722, Korea (corresponding author).