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Research Article

Evaluation of Seismic Fragility of Concrete Faced Rockfill Dam

콘크리트 표면차수벽형 석괴댐의 지진 취약도 평가

Jongmin Baeg1
,
Duhee Park2*
,
Jinam Yoon3
,
Byoung-Han Choi4
백 종민1
,
박 두희2*
,
윤 지남3
,
최 병한4
1Member, Graduate Student, Dept. of Civil and Env. Engineering., Hanyang University, 222 Wangsimni-ro, Seoul 04763, Republic of Korea
2Member, Professor, Dept. of Civil and Env. Engineering., Hanyang University, 222 Wangsimni-ro, Seoul 04763, Republic of Korea
3Nonmember, Ph.D. Student, Dept. of Civil and Env. Engineering., Hanyang University, 222 Wangsimni-ro, Seoul 04763, Republic of Korea
4Nonmember, Senior Researcher, Ph.D., Rural Research Institute, Korea Rural Community Co., E870, Haen-ro Sangnok-gu, Ansan-si, Gyeonggi-do 15634, Republic of Korea
* Corresponding Author
30 December 2018. pp. 103-108
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Abstract

The fragility curves for CFRD dams are derived in this study for probabilistic damage estimation as a function of a ground motion intensity. The dam crest settlement, which is a widely used damage index, is used for minor, moderate, and extensive damage states. The settlement is calculated from nonlinear dynamic numerical simulations. The accuracy of the numerical model is validated through comparison with a centrifuge test. The fragility curve is represented as a log normal distribution function and presented as a function of the peak ground acceleration. The fragility curves developed in this study can be utilized for real time assessment of the damage of dams.

Keywords
Earthquake
Fill dam
Fragility curve
Damage state
Damage index

본 연구에서는 지반진동 강도에 따른 콘크리트 표면차수벽 석괴댐(CFRD)의 확률론적 피해예측을 위하여 취약도 함수를 개발하였다. 댐의 손상평가에 널리 사용되는 지표인 댐마루 침하량을 손상지수로 사용하여 경미(Minor), 중간(Moderate), 심각(Severe) 손상수준을 정의하였다. 침하량은 댐 표준단면에 대한 비선형 동적 수치해석을 통하여 계산하였다. 수치해석 모델은 원심모형시험결과와 비교하여 정확성을 검증하였다. 취약도 곡선은 대수정규분포함수로 나타내어 최대지반가속도를 기준으로 도출하였다. 본 연구에서 도출된 취약도 곡선은 댐의 실시간 피해예측에 활용될 수 있을 것으로 판단된다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 17
  • No :4
  • Pages :103-108
  • Received Date : 2018-11-05
  • Revised Date : 2018-11-15
  • Accepted Date : 2018-11-23
  • DOI :https://doi.org/10.12814/jkgss.2018.17.4.103
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