Browse > Article
http://dx.doi.org/10.7843/kgs.2014.30.5.67

Evaluation of Characteristics of Shear Strength and Poisso's Ratio through Triaxial and Bender Element Tests  

Yoo, Jin-Kwon (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Park, Du-Hee (Dept. of Civil and Environmental Engrg., Hanyang Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.30, no.5, 2014 , pp. 67-75 More about this Journal
Abstract
In this paper, isotropically consolidated drained triaxial compression test device installed with bender elements is used to measure stress, stain, and shear wave velocity, from which the characteristics of shear strength and Poisson'ratio are investigated. The results show that there is a unique relationship between maximum shear modulus determined from shear wave velocity and effective vertical stress at failure, which is defined as the sum of vertical and radial stresses at failure. The correlation is very useful since it is possible to predict the shear strength and internal friction angle from shear wave velocity. In addition, Poisson's ratio is determined from measured axial and volumetric strains. It is demonstrated that the range of measured Poisson's ratio is between 0.15 and 0.6, and increases with the axial strain. The ratios at axial strains smaller than 0.2% corresponds to the range recommended in design codes, which are approximately from 0.3~0.35. However, at axial strains exceeding 1%, the measured ratios are between 0.5 and 0.6. It is therefore shown that use of ratios commonly used in practice will result in pronounced underestimation at large strains.
Keywords
Sand; Shear Strength; Poisson's ratio; Triaxial compression drained test; Bender Element;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Salem, H. (2000), "Poisson's ratio and the porosity of surface soils and shallow sediments, determined from seismic compressional and shear wave velocities", Geotechnique, Vol.50, No.4, pp.461-463.   DOI   ScienceOn
2 Viggiani, G. and Atkinson, J. (1995), "Interpretation of bender element tests", International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts: Elsevier, 32, pp.373A-373A.
3 Yoshimi, Y., Tokimatsu, J., and Ohara, A. (1994), "In situ liquefaction resistance of clean sands over a wide density range", Geotechnique, Vol.44, No.3, pp.479-494.   DOI   ScienceOn
4 Roesler, S.K. (1979), "Anisotropic shear modulus due to stress anisotropy", Journal of the Geotechnical Engineering Division, Vol. 105, No.7, pp.871-880.
5 Kumar, J. and Madhusudhan, B. (2010), "Effect of relative density and confining pressure on Poisson ratio from bender and extender elements tests", Geotechnique, Vol.60, No.7, pp.561-567.   DOI   ScienceOn
6 Ladd, C. and Foott, R. (1974), "New design procedure for stability of soft clays", Journal of the Geotechnical Engineering Division, Vol.100, No.7, pp.763-786.
7 Ladd, R. (1978), "Preparing test specimens using undercompaction", ASTM geotechnical testing journal, Vol.1, No.1. pp.16-23.
8 Lee, J.-S. and Santamarina, J.C. (2005), "Bender elements: performance and signal interpretation", Journal of Geotechnical and Geoenvironmental Engineering, Vol.131, No.9, pp.1063-1070.   DOI   ScienceOn
9 Raghunandan, M., Juneja, A., and Hsiung, B. (2012), "Preparation of reconstituted sand samples in the laboratory", International Journal of Geotechnical Engineering, Vol.6, No.1, pp.125-131.   DOI
10 Sharma, R.M., Baxter, C.D., Moran, K., Vaziri, H., and Narayanasamy, R. (2011), "Strength of weakly cemented sands from drained multistage triaxial tests", Journal of Geotechnical and Geoenvironmental Engineering, Vol.137, No.12, pp.1202-1210.   DOI
11 Richart, F.E., Hall, J.R., and Woods, R.D. (1970), "Vibrations of soils and foundations", Prentice-Hall, Englewood Cliffs, New Jersey, pp.414.
12 Duncan, J.M. and Chang, C.-Y. (1970), "Nonlinear analysis of stress and strain in soils", Journal of the Soil Mechanics and Foundations Division, Vol.96, No. SM5, pp.1629-1653.
13 Dyvik, R. and Madshus, C. (1985), "Lab Measurements of Gmax Using Bender Elements", Advances in the art of testing soils under cyclic conditions: ASCE, pp.186-196.
14 Juneja, A. and Raghunandan, M. (2010), "Effect of Sample Preparation on Strength of Sands", Indian Geotechnical Conference, Mumbai, India, pp.327-330.
15 Fernandez, A.L. (2000), "Tomographic imaging the state of stress", PhD thesis Civil Engineering, Georgia Institute of Technology, Atlanta. pp.298.
16 Frost, J. and Park, J.-Y. (2003), "A critical assessment of the moist tamping technique", ASTM geotechnical testing journal, Vol.26, No.1, pp.57-70.
17 Head, K.H. and Epps, R. (1986), Manual of soil laboratory testing, Pentech Press London, pp.
18 Cho, G.C. and Lee, I.M. (2002), "Soil Properties in relation to Elastic Wave", Journal of Korean Geotechnical Engineering, Vol. 18, No.6, pp.83-101.   과학기술학회마을
19 Cresswell, A., Barton, M.E., and Brown, R. (1999), "Determining the maximum density of sands by pluviation", ASTM geotechnical testing journal, Vol.22, No.4, pp.324-328.   DOI