Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
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Poisson's Ratio Prediction of Soil Using the Consolidation Undrained Triaxial Compression Test

압밀비배수 삼축압축실험을 이용한 지반의 포아송비 예측

  • Lim, Seongyoon (Rural Development Administration, National Institute of Agricultural Sciences) ;
  • Yu, Seokchoel (Rural Development Administration, National Institute of Agricultural Sciences) ;
  • Kim, Yuyong (Rural Development Administration, National Institute of Agricultural Sciences) ;
  • Kim, Myeonghwan (Geo Mechanics Technology Group)
  • Received : 2020.06.25
  • Accepted : 2020.07.10
  • Published : 2020.07.31
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Abstract

The poisson's ratio was obtained from the effective vertical stress and horizontal stress of consolidation-undrained test. It was analyzed void ratio verse poisson's ratio. At the result, the effective friction angle was increase with relative density increased, was decreased the poisson's ratio. The empirical equation of void ratio and poisson's ratio was showed very high correlation r2=0.846. The empirical equation was showed that the smaller the void ratio in the fine grained soil than granular soil. In the case of 0.85 times the correlation analysis equation of granular and fine grained soil, the experimental results were shown very similarly. In especially, the poisson's ratio prediction results was shown within 5% of the error range, was revalidation 0.85 times the correlation analysis equation using the void ratio. In this study, correlation analysis equation of the granular and fine grained soil was more reliability of the poisson's ratio prediction results apply to the void ratio than dry unit weight.

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References

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