Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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A Study on Geotechnical Centrifuge Testing Method for Seismic Performance Evaluation of Large Embankment Dams

대형 댐의 지진응답특성평가를 위한 원심모형시험 기법 연구

  • Kim, Nam-Ryong (Infrastructure technology research center, K-water Institute) ;
  • Lim, Jeong-Yeul (Infrastructure technology research center, K-water Institute) ;
  • Im, Eun-Sang (Infrastructure technology research center, K-water Institute)
  • 김남룡 (K-water연구원 기반시설연구소) ;
  • 임정열 (K-water연구원 기반시설연구소) ;
  • 임은상 (K-water연구원 기반시설연구소)
  • Received : 2016.02.24
  • Accepted : 2016.03.30
  • Published : 2016.07.01
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Abstract

Damages of large embankment dams by recent strong earthquakes in the world highlight the importance of seismic security of dams. Some of recent dam construction projects for water storage and hydropower are located in highly seismic zone, hence the seismic performance evaluation is an important issue. While state-of-the-art numerical analysis technology is generally utilized in practice for seismic performance evaluation of large dams, physical modeling is also carried out where new construction technology is involved or numerical analysis technology cannot simulate the behavior appropriately. Geotechnical centrifuge modeling is widely adopted in earthquake engineering to simulate the seismic behavior of large earth structures, but sometimes it can't be applied for large embankment dams due to various limitations. This study proposes a dynamic centrifuge testing method for large embankment dams and evaluated its applicability. Scaling relations for a case which model scale and g-level are different could be derived considering the stress conditions and predominant period of the structure, which is equivalent to previously suggested scaling relations. The scaling principles and testing method could be verified by modified modeling of models using a model at different acceleration levels. Finally, its applicability was examined by centrifuge tests for an embankment dam in Korea.

Keywords

References

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  1. Dynamic Centrifuge Testing Method for Large Embankment Dams: Limitations and Alternative Methods vol.18, pp.3, 2018, https://doi.org/10.9798/KOSHAM.2018.18.3.201