전단파를 이용한 쉘비 튜브의 샘플 교란 효과 평가

Assessing sample disturbance of shelby tube using shear waves

  • 윤형구 (고려대학교 건축.사회환경공학과) ;
  • 이종섭 (고려대학교 건축.사회환경공학과) ;
  • 김준한 (고려대학교 건축.사회환경공학과) ;
  • 조용순 (고려대학교 건축.사회환경공학과)
  • Yoon, Hyung-Koo (Department of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Lee, Jong-Sub (Department of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Kim, Joon-Han (Department of Civil, Environmental and Architectural Engineering, Korea University) ;
  • Cho, Yong-Soon (Department of Civil, Environmental and Architectural Engineering, Korea University)
  • 발행 : 2008.03.28

초록

To evaluate the engineering properties of soil, the laboratory test always is carried out using samples obtained from the field. There are many studies to estimate the effect of sampling disturbance. The objective of this study appraises the disturbance using the shear wave velocity. The new shelby tube which three transducers are installed every 20cm interval is used. To laboratory tests, the large-scale consolidometer (calibration chamber) is used. During 1cm penetration, the shear wave velocity is measured by every transducer. The initial sampling disturbance is assessed through the velocity difference from bottom to right upside transducer. After finishing the sampling, the velocity is still measured every time to assess the soil disturbance in shelby tube itself. Through the measured velocity, the effect of disturbance is appraised. This study suggests that the sampling disturbance of shelby tube is effectively evaluated using shear wave velocity.

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