1. Department of Civil and Environmental Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea, http://orcid.org/0000-0002-0078-9473
2. Department of Civil and Environmental Engineering, Sejong University, 209 Neungdong-ro, Gwangjin-gu, Seoul 05006, Korea (Corresponding author), e-mail: jongmin@sejong.ac.kr, http://orcid.org/0000-0001-8942-2346