Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Validation of a Rate-Sensitive Model for Clayey Soils

점성토에서 전단속도 의존 모델의 검증

  • Kim, Dae-Kyu (Dept. of Civil Engineering, Sangmyung University)
  • Published : 2009.03.31
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Abstract

In this study, the rate-sensitive constitutive model, which was developed in the previous paper of this journal, was validated using the experimental results obtained from the well-calibrated triaxial compression test conducted with the Boston blue clay. The validation was performed for the various cases of the strain rate of 0.05%/hr, 0.5%/hr, 5.0%/hr and OCR of 1, 2, 4, 8. The developed model was validated for the normally and slightly overconsolidated cases; however, the cases of heavily overconsolidation needs further research.

본 논문에서는 전 논문에서 개발되었으나 검증을 필요로 한 간단한 전단속도 의존적 구성모델을 유명한 보스톤블루 점토를 대상으로 엄격하게 수행된 비등방 삼축압축시험 결과를 활용하여 검증하였다. 검증은 전단속도 0.05%hr, 0.5%/hr, 5.0%hr 및 OCR=1, 2, 4, 8 경우에 있어서 수행되었다. 연구결과, 개발된 모델은 OCR=4, 8 경우 등 심한 과압밀 경우에는 변형율 완화, 비배수강도 등 응력-변형율 예측에 있어 개선이 필요한 것으로 보였으나, OCR=1, 2 등 정규압밀 또는 약간 과압밀 경우에는 비교적 신뢰도 높게 응력-변형을 관계를 예측하여, 그 활용도를 기대할 수 있겠다.

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References

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