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Journal of Korean Society of Coastal and Ocean Engineers > Volume 31(6); 2019 > Article
J Korean Soc Coast Ocean Eng 2019;31(6): 386-394. doi: https://doi.org/10.9765/KSCOE.2019.31.6.386
FEM 해석에 의한 지반배수조건에 따른 지진 시 영일만항의 케이슨식 안벽 및 배후지의 거동 분석
이학주1, 강기천2, 황웅기3, 이민선4, 김태형5
1한국해양대학교 토목환경공학과
2경상대학교 토목공학과
4(주)HTI코리아 기업부설연구소
5한국해양대학교 건설공학과
Behavior Analysis on Earthquake-Induced Deformation of Quay Wall and Apron in Ground at Youngilman Port Considering Drainage Condition Using FEM Analysis
Hak-Ju Lee1, Gi-Chun Kang2, Woong-Ki Hwang3, Min-Sun Lee4, Tae-Hyung Kim5
1Dept. of Civil and Environmental Eng., Korea Maritime and Ocean University
2Dept. of Civil Engrg, Gyeongsang National University
3Geo R&D
4HTI Korea Co., Ltd.
5Dept. of Civil Eng., Korea Maritime and Ocean University, 727, Taejong-ro, Yeongdo-gu, Busan 49112, Korea
Corresponding author: Tae-Hyung Kim ,Tel: +82-51-410-4465, Fax: +82-51-410-4460, Email: kth67399@kmou.ac.kr
Received: October 22, 2019;  Revised: December 12, 2019.  Accepted: December 18, 2019.
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In this study, according to drainage condition (undrained and drained) in ground, the settlement and horizontal displacement of caisson quay wall and apron in Yeongilman port due to excess pore water pressure in ground induced by the magnitude 5.4 earthquake in Pohang on November 15, 2017. In general, seismic response analysis was carried out under undrained drainage condition, but in this study, drain drainage analysis was conducted to estimate displacement during earthquake as well as an additional displacement due to dissipation of excess pore water pressure after earthquake. The result of after earthquake can not be known under undrained drainage condition. Results cleary showed that the behavior of structure and ground was dependent on drainage condition in ground. Especially, based on the drained drainage condition, the additional displacement was clearly detected due to dissipation of excess pore water pressure after earthquake. Which indicates that both results are different to drainage condition in ground, and therefore, drainage condition analysis is necessary to accurately estimate the behavior of ground and structure in seismic response analysis.
Keywords: earthquake, drained drainage condition, seismic response analysis, dissipation, settlement
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