1. Postdoctoral Researcher, Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.
2. Associate Professor, Dept. of Civil and Environmental Engineering, College of Engineering, Kongju National Univ., 1223-24 Cheonan-daero, Subuk, Cheonan, Chungnam 31080, Republic of Korea (corresponding author).
3. Professor, Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 34141, Republic of Korea.