The weathering of the granite rock results in C.D.G.S (completely decomposed granite soil) in most land area. Therefore, the C.D.G.S is commonly encountered in construction field, such as riverbanks and embankments, including roads and railways, and has a stress history of compaction with their construction. In this process, the compacted soil possesses an anisotropic property. Measurement of stress-strain-strength behavior of anisotropic decomposed granite soil is very important for the analysis of deformation and stability of slopes, retaining walls and excavations. Therefore, Anisotropy of mechanical properties for C.D.G.S (compacted decomposed granite soil), a series of unsaturated and saturated-drained triaxial compression tests was performed in order to investigate the deformation and strength anisotropy of C.D.G.S (compacted decomposed granite soils). Three different orientation angles of the axial direction of samples with respect to the horizontal plane were investigated: d=0, 45 and 90 degrees. As the results showed, the compression strain of specimens subjected to an isotropic compression was influenced strongly by d. The effect of the angle d on the strength was more pronounced on unsaturated specimen as compared to saturated specimen. In addition, the time dependence was independent of the settling angle associated with the deformation behavior during the secondary compression process. The effect of settling angle on triaxial compressive strength and deformation was clearly demonstrated at low constraining stresses. Furthermore, to investigate the effect of strength anisotropy according to the height of the fill on the slope stability, slope stability analysis was performed assuming 10m, 20m, 50m, and 100m of the embankment. it became clear that by considering strength anisotropy, the stability of embankment decreased when water level within the embankment was low. In order to obtain more reliable results in the future, verification using various samples will be required.
| Published in | Earth Sciences (Volume 10, Issue 5) |
| DOI | 10.11648/j.earth.20211005.12 |
| Page(s) | 207-213 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Anisotropy, C.D.G.S (Completely Decomposed Granite Soil), Unsaturated Strength, Sedimentation Plane, Slope Stability Analysis
| [1] | A. J. Hendron. (1963). The behavior of sand in one-dimensional compression. Ph.D. thesis, Univ. of Illinois at Urbana Champaign, Urbana, Ill., 50–89. |
| [2] | J. M. De Souza (1958). Compressibility of sand under high pressure. MS thesis, Massachusetts Institute of Technology, Cambridge, Mass., 63–64. |
| [3] | J. A. Yamamuro, and P. V. Lade. (1996) Drained behavior in axisymmetric tests at high pressures. J. Geotech. Engrg., 122 (2), 109–119. |
| [4] | Jiyeon Choi, Sanghwa Oh, Jeong-Hun Park, (2014) Inseong Hwang (2014) Evaluation of CODsed Analytical Methods for Domestic Freshwater Sediments: Comparison of Reliability and Correlationship between CODMn and CODCr Methods Journal of Environmental Science International Vol. 23 No. 2 pp. 181-192. |
| [5] | K. Terzaghi, and R. B. Peck. (1948) Soil Mechanics in engineering practice, Wiley, New York, 65–67. |
| [6] | Kohata, et al. (1995): Inherent and induced anisotropy of sedimentary soft rock, Proc. of 10ARC, pp. 33-36. |
| [7] | Livneh, M. and Komornik, A. (1967) Anisotropic strength of compacted clay, Proc., 3rd ASIAN Reg. Conf. On SMFE, Vol. 1, pp. 298-304. |
| [8] | M. M. Hagerty, D. R. Hite, C. R. Ullrich, and D. J. Hagerty.(1993) One dimensional high pressure compression of granular media. J. Geotech. Engrg., 119 (1), 1–18. |
| [9] | Myoung-Gyu Lee, Ji Hoon Kim, (2006) Numerical Implementation of Modified Couomb-Mohr Yiedl Criterion for Anisotropic Materials. Fibers and Polymers Vol 7, No. 3, 276-285. |
| [10] | Matsuo, S., Nishida, K., and Sasaki, S. “Physical properties of weathered granite soil particles and their effect on permeability.” Soil Found., 19 (1), 13–22. (1979). |
| [11] | Nakata, Y., Hyodo, M. and Murata, H.(1998) Single particle crushing and mechanical behavior of decomposed granite soil, Proceedings of the international symposium on problematic soils, IS-TOHOKU’98. SENDAI, JAPAN: pp. 483-497. |
| [12] | Onitsuka, K. and Hayashi, S., (1979) Studies on compression and strength Anisotropy of compacted soils, in Japanese. JSCE. Vol. 19, No. 3, Sept, pp. 113-123. |
| [13] | Oda, M., Koishikawa, I., and Higuchi, T., (1978) Experimental study of anisotropic shear strength of sand by plane strain test, Soils and Foundation, Vol. 18, No. 1, pp. 25-38. |
| [14] | P. V. Lade, and J. A. Yamamuro. (1996) Undrained sand behavior in axisymmetric tests at high pressures. J. Geotech. Engrg., 122 (2), 120–129. |
| [15] | Tatsuoka, F., Nakamura, S., Huang, C. and Tani, K.,(1990) Strength anisotropy and shear band direction, Soils and Foundation, Vol. 30, No. 1, pp. 35-54. |
| [16] | Tatsuoka, F. amd Shibuya, S., (1992) Deformation characteristics of soils and rocks from field and laboratory tests, Keynote Lecture, Proc. of 9th Asian Regional Conf. on SMFE, Vol. 2, pp. 101-170. |
| [17] | Y. Nakata, M. Hyodo, A. F. L. Hyde, Y. Kato, and H. Murata. (2001) Microscopic particle crushing of sand subjected to high pressure one-dimensional compression. Soil Found. 41 (1), 69–82. |
APA Style
Tae-Gew Ham, Jin-Hwan Lim, Man-Bok Ha. (2021). Investigation of the Effect of Strength Anisotropy on Slope Stability of C.D.G.S. Earth Sciences, 10(5), 207-213. https://doi.org/10.11648/j.earth.20211005.12
ACS Style
Tae-Gew Ham; Jin-Hwan Lim; Man-Bok Ha. Investigation of the Effect of Strength Anisotropy on Slope Stability of C.D.G.S. Earth Sci. 2021, 10(5), 207-213. doi: 10.11648/j.earth.20211005.12
AMA Style
Tae-Gew Ham, Jin-Hwan Lim, Man-Bok Ha. Investigation of the Effect of Strength Anisotropy on Slope Stability of C.D.G.S. Earth Sci. 2021;10(5):207-213. doi: 10.11648/j.earth.20211005.12
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Download@article{10.11648/j.earth.20211005.12,
author = {Tae-Gew Ham and Jin-Hwan Lim and Man-Bok Ha},
title = {Investigation of the Effect of Strength Anisotropy on Slope Stability of C.D.G.S},
journal = {Earth Sciences},
volume = {10},
number = {5},
pages = {207-213},
doi = {10.11648/j.earth.20211005.12},
url = {https://doi.org/10.11648/j.earth.20211005.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20211005.12},
abstract = {The weathering of the granite rock results in C.D.G.S (completely decomposed granite soil) in most land area. Therefore, the C.D.G.S is commonly encountered in construction field, such as riverbanks and embankments, including roads and railways, and has a stress history of compaction with their construction. In this process, the compacted soil possesses an anisotropic property. Measurement of stress-strain-strength behavior of anisotropic decomposed granite soil is very important for the analysis of deformation and stability of slopes, retaining walls and excavations. Therefore, Anisotropy of mechanical properties for C.D.G.S (compacted decomposed granite soil), a series of unsaturated and saturated-drained triaxial compression tests was performed in order to investigate the deformation and strength anisotropy of C.D.G.S (compacted decomposed granite soils). Three different orientation angles of the axial direction of samples with respect to the horizontal plane were investigated: d=0, 45 and 90 degrees. As the results showed, the compression strain of specimens subjected to an isotropic compression was influenced strongly by d. The effect of the angle d on the strength was more pronounced on unsaturated specimen as compared to saturated specimen. In addition, the time dependence was independent of the settling angle associated with the deformation behavior during the secondary compression process. The effect of settling angle on triaxial compressive strength and deformation was clearly demonstrated at low constraining stresses. Furthermore, to investigate the effect of strength anisotropy according to the height of the fill on the slope stability, slope stability analysis was performed assuming 10m, 20m, 50m, and 100m of the embankment. it became clear that by considering strength anisotropy, the stability of embankment decreased when water level within the embankment was low. In order to obtain more reliable results in the future, verification using various samples will be required.},
year = {2021}
}
TY - JOUR T1 - Investigation of the Effect of Strength Anisotropy on Slope Stability of C.D.G.S AU - Tae-Gew Ham AU - Jin-Hwan Lim AU - Man-Bok Ha Y1 - 2021/10/12 PY - 2021 N1 - https://doi.org/10.11648/j.earth.20211005.12 DO - 10.11648/j.earth.20211005.12 T2 - Earth Sciences JF - Earth Sciences JO - Earth Sciences SP - 207 EP - 213 PB - Science Publishing Group SN - 2328-5982 UR - https://doi.org/10.11648/j.earth.20211005.12 AB - The weathering of the granite rock results in C.D.G.S (completely decomposed granite soil) in most land area. Therefore, the C.D.G.S is commonly encountered in construction field, such as riverbanks and embankments, including roads and railways, and has a stress history of compaction with their construction. In this process, the compacted soil possesses an anisotropic property. Measurement of stress-strain-strength behavior of anisotropic decomposed granite soil is very important for the analysis of deformation and stability of slopes, retaining walls and excavations. Therefore, Anisotropy of mechanical properties for C.D.G.S (compacted decomposed granite soil), a series of unsaturated and saturated-drained triaxial compression tests was performed in order to investigate the deformation and strength anisotropy of C.D.G.S (compacted decomposed granite soils). Three different orientation angles of the axial direction of samples with respect to the horizontal plane were investigated: d=0, 45 and 90 degrees. As the results showed, the compression strain of specimens subjected to an isotropic compression was influenced strongly by d. The effect of the angle d on the strength was more pronounced on unsaturated specimen as compared to saturated specimen. In addition, the time dependence was independent of the settling angle associated with the deformation behavior during the secondary compression process. The effect of settling angle on triaxial compressive strength and deformation was clearly demonstrated at low constraining stresses. Furthermore, to investigate the effect of strength anisotropy according to the height of the fill on the slope stability, slope stability analysis was performed assuming 10m, 20m, 50m, and 100m of the embankment. it became clear that by considering strength anisotropy, the stability of embankment decreased when water level within the embankment was low. In order to obtain more reliable results in the future, verification using various samples will be required. VL - 10 IS - 5 ER -
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