1. Senior Researcher, Institute of Construction Technology, Engineering, and Construction Group, Samsung C&T Corp., 6F Daeryung Gangnam Tower 826-20 Yeoksam1-Dong, Seoul 135-935, Korea.
2. Professor, Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Korea (corresponding author).
3. Principal Researcher, Institute of Construction Technology, Engineering, and Construction Group, Samsung C&T Corp., 6F Daeryung Gangnam Tower 826-20 Yeoksam1-Dong, Seoul 135-935, Korea.
4. Principal Researcher, Korea Electric Power Research Institute (KEPRI), Korea Electric Power Corp. (KEPCO), 105 Munji-Ro, Yuseong-Gu, Daejeon 305-760, Korea.