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CFD Analysis of Underwater Standard Penetration Test Equipment

해저 표준관입시험 장비의 밀폐형 항타부 CFD 해석

  • Received : 2012.05.02
  • Accepted : 2012.12.11
  • Published : 2012.12.31

Abstract

In our study, a closed-type penetration unit for standard penetration test (SPT) equipment was developed in order to operate in an underwater environment. This type causes energy dissipation, mainly due to the small gap between an airtight case and moving hammer. The dissipation was estimated through a CFD analysis. The computed dissipated energy was less than 1.2% compared to the potential energy of the hammer with the given gap. Subsequently, the impact energy of the underwater SPT equipment was within 1.2% of that for the SPT equipment on land.

Keywords

Offshore geotechnical investigations;SPT(Standard Penetration Test) equipment;Closed penetration part;CFD analysis

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Acknowledgement

Supported by : 국토해양부