1. Department of Civil & Environmental Engineering, Hanyang University , 1271 Sa3-dong, Sanrok-gu, Ansan, Gyeonggi-do, 426-791, South Korea
2. River, Coastal & Harbor Research Division, Korea Institute of Construction Technology , 1190, Simindae-ro, Ilsanseo-gu, Goyang, Gyeonggi-do, 411712, South Korea