1. Ph.D. Candidate, Dept. of Civil Engineering, Kunsan National Univ., 558 Daehak-ro, Gunsan-si 54150, Republic of Korea.
2. Professor, Dept. of Civil Engineering, Kunsan National Univ., 558 Daehak-ro, Gunsan-si 54150, Republic of Korea (corresponding author).
3. Graduate Assistant, Dept. of Civil Engineering, Kunsan National Univ., 558 Daehak-ro, Gunsan-si 54150, Republic of Korea.