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압밀비배수 삼축압축실험을 이용한 지반의 포아송비 예측

Poisson’s Ratio Prediction of Soil Using the Consolidation Undrained Triaxial Compression Test

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참고문헌

키워드

주제분류농학

초록

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

Abstract

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

참고문헌 (12)

  1. "Standard Test Method for Consolidated Undrained Triaxial Compression Test for Cohesive Soils", ASTM, ~
  2. Burland, J. B., "Ninth Laurits Bjerrum Memorial Lecture : small is beautiful-the stiffness of soils at small strains", Canadian Geotechnical Journal, 26(4), pp.52~65 (1989)
  3. 변용훈, "압축파와 전단파를 이용한 불포화토의 간극비 산정", 한국지반공학회논문집, 28(12), pp.41~51 (2012), 한국지반공학회
  4. Jardine, R. J., "Studies of the influence of non-linear stress-strain characteristics in soil-structure interaction", Geotechnique, 36(3), pp.377~396 (1986)[DOI]
  5. Jaky, J., "Pressure in silos", Proceedings of the 2nd International Conference on Soil Mechanics and Foundation Engineering, 1, pp.103~107 (1948)
  6. 고동희, "미소변형측정 삼축시험기의 개발 및 적용", 대한토목학회 논문집C, 22(3-C), pp.219~229 (2002), 대한토목학회
  7. "Standard Test Method for Particle Size Distribution of Soils", KRISS, ~ (2017)
  8. "Standard Test Method for Soil Compaction", KRISS, ~ (2016)
  9. Kumar, J., "Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests", Geotechnique, 60(7), pp.561~567 (2010)[DOI]
  10. Lo Presti, D. C. F., "Innovation in Soil Testing", ISSMGE, pp.158~207 (1999)
  11. 유진권, "벤더엘리먼트와 삼축시험을 통한 모래의 전단강도 및 포아송비 특성 규명", 한국지반공학회논문집, 30(5), pp.67~75 (2014), 한국지반공학회
  12. Yoon, C. M., "A study on the Poisson’s ratio of domestic sands according to the various conditions", 석사, pp.2009

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