[1] School of Civil,
[2] Urban and Geosystem Engineering,undefined
[3] Seoul National University,undefined
[4] Gwanak-Ku,undefined
[5] Seoul,undefined
[6] 151-742,undefined
[7] Seoul,undefined
[8] Korea Tel. +82-2-880-8364; Fax +82-2-889-0032 e-mail: jaeykim@snu.ac.kr,undefined
[9] En3 Co.,undefined
[10] Ltd.,undefined
[11] Seoul,undefined
[12] Korea,undefined
[13] Dowha Consulting Engineers Co.,undefined
[14] Ltd.,undefined
[15] Seoul,undefined
[16] Korea,undefined
[17] Research Division for Social Infrastructure and Construction Technology,undefined
[18] Seoul National University,undefined
[19] Seoul,undefined
[20] Korea,undefined