1. Department of Civil Engineering, Myongji College, 134 Gajwa-ro, Seodaemun-gu, Seoul 03656, Republic of Korea
2. Department of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology, Goyang-si 10223, Republic of Korea
3. Department of Civil Engineering, Halla University, 28 Halladae-gil, Wonju-si 26404, Republic of Korea