A Study of ${{\sigma}_v}'-D_r-N$ Correlation using Large Calibration Chamber System

대형 Calibration Chamber System을 이용한 ${{\sigma}_v}'-D_r-N$ 상관관계 연구

  • Choi, Sung-Kun (Dept. of Civil and Environmental Engineering, Korea University) ;
  • Kim, Sang-In (Dept. of Civil and Environmental Engineering, Korea University) ;
  • Lee, Chung-Ho (Hyein E&C Co., Ltd) ;
  • Kim, Dong-Hoo (Daeyoung Engineering Co., Ltd) ;
  • Lee, Woo-Jin (Dept. of Civil and Environmental Engineering, Korea University)
  • 최성근 (고려대학교 사회환경시스템공학과) ;
  • 김상인 (고려대학교 사회환경시스템공학과) ;
  • 이충호 ((주)혜인ENC) ;
  • 김동후 ((주)대영엔지니어링) ;
  • 이우진 (고려대학교 사회환경시스템공학과)
  • Published : 2005.03.25

Abstract

Using KUCCS, which enables real-time monitoring and controlling, the various boundary condition and in-situ field stress condition was simulated, to derive the correlation among ${{\sigma}_v}'-Dr-N$in domestic sandy soils. Soil specimens, having various relative density and confined stress, were formulated to evaluate N-value from the SPT. and Pile Driving Analyzer, PDA, was employed as a measuring device for the energy transfer efficiency in the rod. From the quantitative analysis of N-value, the correlating equation, $N_{60}/{D_r}^2=16.35+14.45{{\sigma}_v}'$ was obtained on the basis of Skempton's method(1986). More reliable soil parameters can be obtained from the N-value by using this study which considered regional characters and the correlation among ${{\sigma}_v}'-Dr-N$.