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A Study on Numerical Modeling of Dynamic CPT using Particle Flow Code

입자결합모델을 이용한 동적콘관입시험(DCPT)의 수치해석 모델링에 관한 연구

  • 유광호 (수원대학교 토목공학과) ;
  • 이창수 (수원대학교 토목공학과) ;
  • 최준성 (인덕대학교 토목환경설계과)
  • Received : 2014.02.07
  • Accepted : 2014.03.13
  • Published : 2014.04.15

Abstract

PURPOSES : To solve problems in current compaction control DCPT(Dynamic Cone Penetrometer Test), highly correlated with various testing methods, simple, and economic is being applied. However, it、s hard to utilize DCPT results due to the few numerical analyses for DCPT have been performed and the lack of data accumulation. Therefore, this study tried to verify the validation of numerical modeling for DCPT by comparing and analyzing the results of numerical analyses with field tests. METHODS: The ground elastic modulus and PR(Penetration Rate) value were estimated by using PFC(Particle Flow Code) 3D program based on the discrete element method. Those values were compared and analyzed with the result of field tests. Also, back analysis was conducted to describe ground elastic modulus of field tests. RESULTS : Relative errors of PR value between the numerical analyses and field tests were calculated to be comparatively low. Also, the relationship between elastic modulus and PR value turned out to be similar. CONCLUSIONS : Numerical modeling of DCPT is considered to be suitable for describing field tests by carrying out numerical analysis using PFC 3D program.

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