Journal of the Earthquake Engineering Society of Korea (한국지진공학회논문집)

Earthquake Engineering Society of Korea (한국지진공학회)
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A Basic Study on Relative Liquefaction Failure Risk Assessment of Domestic Small to Medium-Sized Earthfill Dams

국내 중소규모 흙댐의 상대적 액상화 파괴위험도 평가 기초 연구

  • Park, Tae Hoon (Jungin Engineering & Construction Co., Ltd.) ;
  • Ha, Ik-soo (Department of Civil Engineering, Kyungnam University)
  • 박태훈 (정인종합건설 주식회사) ;
  • 하익수 (경남대학교 재난안전건설학과)
  • Received : 2023.04.01
  • Accepted : 2023.04.04
  • Published : 2023.05.01
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Abstract

This study aims to present a method to evaluate the relative risk of failure due to liquefaction of domestic small to medium-sized earthfill dams with a height of less than 15 m, which has little information on geotechnical properties. Based on the results of previous researches, a series of methods and procedures for estimating the probability of dam failure due to liquefaction, which calculates the probability of liquefaction occurrence of the dam body, the amount of settlement at the dam crest according to the estimation of the residual strength of the dam after liquefaction, the overtopping depth determined from the amount of settlement at the dam crest, and the probability of failure of the dam due to overtopping was explicitly presented. To this end, representative properties essential for estimating the probability of failure due to the liquefaction of small to medium-sized earthfill dams were presented. Since it is almost impossible to directly determine these representative properties for each of the target dams because it is almost impossible to obtain geotechnical property information, they were estimated and determined from the results of field and laboratory tests conducted on existing small to medium-sized earthfill dams in previous researches. The method and procedure presented in this study were applied to 12 earthfill dams on a trial basis, and the liquefaction failure probability was calculated. The analysis of the calculation results confirmed that the representative properties were reasonable and that the overall evaluation procedure and method were effective.

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References

  1. Ha IS, Lee SG, Kim NR, Lim JY. A proposal of seismic failure probability estimation chart of the Korean small and medium sized earthfill dams. Journal of the Korean Geo-Environmental Society. 2017;18(3):31-38. https://doi.org/10.14481/jkges.2017.18.1.31
  2. Ha IS, Lee SG, Lim JY, Jung YH. Seismic failure probability of the Korean disaster risk fill dams estimated by considering freeboard only. Journal of Korean Society of Civil Engineers. 2016;36(3):451-461. https://doi.org/10.12652/Ksce.2016.36.3.0451
  3. Ha IS. A case study on the seismic hazard classification of domestic drinking water earthfill dams using zero seismic failure probability curve. Journal of the Earthquake Engineering Society of Korea. 2022;26(4):173-180. https://doi.org/10.5000/EESK.2022.26.4.173
  4. US Bureau of Reclamation (USBR), US Army Corps of Engineers (USACE). Best practices in dam and levee safety risk analysis-methods to evaluate seismic risks for embankments. Ver.4.0. c2015.
  5. Idriss IM, Boulan ger RW. SPT-based liquefaction triggering procedures. 2010; No. UCD/CGM-10/02, University of California, Davis, Calif.
  6. Idriss IM, Boulanger RW. 2nd Ishihara Lecture: SPT- and CPT-based relationships for the residual shear strength of liquefied soils. Soil Dynamics and Earthquake Engineering. 2015;68:57-68. https://doi.org/10.1016/j.soildyn.2014.09.010
  7. FMSM Engineers. A simplified tool for assessing the deformation of embankment dams and levees on liquefied soils. Final Report, prepared by FMSM Engineers for the U. S. Army Corps of Engineers, Louisville, Kentucky. c2007.
  8. Itasca Consulting Group. FLAC2D (Fast Lagrangian Analysis of Continua in 2 Dimensions) ver. 8.0, Minnesota, USA. c2018.
  9. Bowles DB, Anderson LR. Dam risk assessment engineering considerations. Seminar on Dam Risk Assessment Case Studies, 2012 Sept. 27, RAC Engineerings & Economists.
  10. NEMA. Nation Earthquake Hazard Map. NEMA announcement 2013; 2013-179. Korea National Emergency Management. c2013.
  11. MOIS. Evaluation technology of reserviors maintenance priority based on risk analysis. Research Report. Ministry of the Interior and Safety. c2018.
  12. Kline TJ. Psychological testing: a practical approach to design and evaluation. Sage Publications. c2015.
  13. MAFRA. Revision of seismic design criteria for agricultural production infrastructure. Research Report 11-1543000-001992-01, Ministry of Agriculture, Food and Affairs. c2007.
  14. Liao SSC, Whitman RV. Overburden correction factors for SPT in sand. J Geotech. Engrg. 1986;112(3):373-377. https://doi.org/10.1061/(ASCE)0733-9410(1986)112:3(373)