Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
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Empirical Estimations of Soil Constants Using Standard Penetration Test N Value

표준관입시험 N값을 활용한 지반정수의 경험적 산정

  • Gang, ByeungJu (Department of Civil & Environmental Engineering, Dankook University) ;
  • Hwang, Bumsik (Department of Civil & Environmental Engineering, Dankook University) ;
  • Cho, Wanjei (Department of Civil & Environmental Engineering, Dankook University)
  • Received : 2018.05.01
  • Accepted : 2018.05.25
  • Published : 2018.06.01
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Abstract

Domestic design manuals provide various empirical relationships of design parameters of soils with N values from the Standard Penetration Test (SPT), which can be widely used in the basic design process as well as during the construction process. However, the currently used empirical relationships are based on the data from foreign countries and are rarely evaluated with domestic data with currently used site investigation techniques. Therefore, in this study, those empirical relationships and conversion tables are evaluated with the geotechnical information in the Integrated DB Center of National Geotechnical Information and new empirical relationships are newly proposed with the consideration of domestic geotechnical conditions.

국내설계기준에서는 표준관입시험을 통해 산정된 N값으로 여러 지반 설계정수를 산출할 수 있는 경험식을 제시하고 있으며 이렇게 산출된 지반 설계정수는 시공현장과 기본설계에서 유용하게 활용될 수 있다. 하지만 기존 통용되고 있는 경험식은 대부분 국외에서 연구되어 제시된 것으로, 국내 지반조건과 현재 사용되고 있는 지반조사기술이 적용된 자료에 대한 적용성과 타당성을 검토하는 연구는 미흡한 실정이다. 따라서 본 논문은 국토지반정보 통합DB센터에 제공하는 시추공 데이터를 이용하여 토질시험에서 얻어진 설계정수값과 N값을 이용해서 경험식에서 얻어진 설계 정수값을 비교 분석하여 기존 국내에 사용되고 있는 경험식을 검증하였고 국내의 지반조건을 고려한 경험식과 산정지표를 제안하였다.

Keywords

References

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