Proceedings of the Korean Geotechical Society Conference (한국지반공학회:학술대회논문집)

Korean Geotechnical Society (한국지반공학회)
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A Case Study on Verification of Inverse Calculation of Dynamic Properties of Rockfill Zone using Microearthquake Records

댐 계측지진 활용 사력죤 물성 역산법 검증 사례 연구

  • Ha, Ik-Soo (Dam Engineering Research Center, Korea Water Resources Corporation(K-water)) ;
  • Oh, Byung-Hyun (Dam Engineering Research Center, K-water)
  • 하익수 (한국수자원공사 댐안전연구소) ;
  • 오병현 (한국수자원공사 댐안전연구소)
  • Published : 2010.03.25
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Abstract

In this study, from the comparison of the results obtained by 3 dimensional dynamic analyses using the inverse-calculated properties and those by calculating using the real earthquake records, the inverse calculation method for obtaining the dynamic properties of rockfill materials was verified. The fundamental frequency of the dam was determined by analyzing the response spectrum of observed records. By repeated dynamic analyses for various shear moduli of rockfill material, the shear moduli in the rockfill zone that satisfy the relationship between the fundamental frequency obtained by analysis of the observed records and that by numerical analyses were determined. Using the determined shear moduli, the 3 dimensional dynamic analyses for the dam were carried out and the result were compared with the real response characteristics on the crest of the dam.

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