Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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A Study on the Criteria for the Earthquake Safety Evaluation of Fill Dams

필댐의 내진 성능 평가 기준에 대한 고찰

  • Received : 2011.09.09
  • Accepted : 2011.10.18
  • Published : 2011.12.31
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Abstract

The current Korean criteria for seismic performance evaluated by dynamic analysis regulates that the horizontal displacement and vertical settlement of a dam body, including the static deformation, should be within 1% of the dam height. However, there has been weak theoretical support, so that the current criteria have to be validated. Korea is in a region of low or moderate seismicity located inside the Eurasian plate, and few earthquakes with considerable magnitudes and intensities have been recorded in the area. Therefore, in this study, published data measured in overseas countries were collected in order to construct a database and validate the current criteria. In addition, dynamic centrifuge tests and a parametric study using numerical simulations were performed in order to investigate the effect on the horizontal displacement and settlement of a dam body and to validate the current criteria.

현행 국내 내진 성능 평가 기준에서 사용하고 있는 필댐의 동적 상세 해석에 대한 안전성 평가 기준은 지진 하중 조건에 의해 발생되는 댐마루 연직방향, 횡방향 최대 변위가 정적하중에 의한 변위를 포함하여 제체 높이의 1% 이하로 규정하고 있다. 그러나 이는 이론적 근거가 부족하여, 평가 기준에 대한 합리성 검토가 필요하다. 중약진 지역에 속하는 국내 지진학적 특성상 지진시 댐 계측 데이터로 근거를 마련하기가 어려운 실정으로, 본 연구에서는 국외 계측 데이터 D/B 등 다양한 자료를 바탕으로 안전성 평가 기준을 검토하였다. 추가적으로 원심모형시험과 수치해석을 함께 수행하여, 변형 기준을 검토하였다. 또한, 수치시뮬레이션을 통하여 매개 변수 분석을 수행하고, 댐체의 횡방향 변위와 침하에 대한 영향을 분석하고 변형 기준과 비교, 검토하였다.

Keywords

References

  1. 한국시설안전기술공단, 기존 댐의 내진성능 평가 및 향상요령, 건설교통부, 2004.
  2. Swaisgood, J.R., "Embankment dam deformations caused by earthquakes," Proc. of 2003 Pacific Conference on Earthquake Engineering, Christchurch NZ, 2003.
  3. 한국수자원학회, 댐 설계기준, 건설교통부, 2005.
  4. Kim, M.K., Lee, S.H., Choo, Y.W., Kim, D.S., "Seismic behaviors of earth-core and concrete-faced rockfill dams by dynamic centrifuge tests," Soil Dynamics and Earthquake Engineering, Vol. 31, No. 11, 1579-1593, 2011. https://doi.org/10.1016/j.soildyn.2011.06.010
  5. FLAC version 5.0, User's Guide, Itasca Consulting Group, Inc., 2005.
  6. 한국수자원공사 수자원연구원, "댐 타입별 내진 안정성 평가기법 연구," 연구보고서, KIWE-DRC-04-14, 한국수자원공사, 2004.
  7. 김종태, 김동수, 박헌준, 권혁기, "필댐 제체 재료의 동적 물성치 평가 :I 현장 전단파 속도 주상도," 한국지반공학회논문집, 제25권, 제12호, 69-85, 2009.
  8. US. Geological Survey, The Loma Prieta, California, Earthquake of October 17, 1989 - Earth Structures and Engineering Characterization of Ground Motion, US. Geological Survey sional Paper 1552-D, United States Government Printing Office, Washington, 1998.
  9. Yamaguchi, Y., Iwashita, T., and Mitsuishi, S., "Preliminary Investigation of Dams Stricken by the Iwate-Miyagi Nairiku Earthquake in 2008," Proc. 5th East Asia Area Dam Conference, 2008.
  10. Krinitzsky, E.L., Hynes, M.E., "The Bhuj, India, earthquake : lessons learned for earthquake safety of dams on alluvium," Engineering Geology, Vol. 66, 163-196, 2002. https://doi.org/10.1016/S0013-7952(02)00049-2
  11. Bureau, G., Volpe, R.L., Roth, W.H., Udaka, T., "Seismic Analysis of Concrete Face Rockfill Dams," Concrete Face Rockfill Dams - Design, Construction, and Performance, ASCE,. 479-508, 1985.
  12. Verdugo, R., Peters, G., "Observed seismic behavior of three Chilean large dams," Earthquake geotechnical case histories for performance-based design, 409-430, 2009.
  13. Nagayama, I., Yamaguchi, Y., Sasaki, T., Nakamura, A., Kawasaki, H., Hirayama, D., "Damage to Dams due to Three Large Earthquakes Occurred in 2003, in Japan," 36th Joint Meeting Panel on Wind and Seismic Effects, Gaithersburg, US, 2004
  14. Wieland, M., "Earthquake Safety of Existing Dams," keynote lecture, First European Conference on Earthquake Engineering and Seismology, 2006.
  15. Shannon, D.A., "Dam Damage: Evaluating and Learning from the Wenchuan Earthquake's Impact to China's Dams," TCLEE 2009: Lifeline Earthquake Engineering in a Multihazard Environment, ASCE, 1371-1382, 2009.