Volume 15 Issue 3
. 
Turn off MathJax
Article Contents
Abstract
FullText
References
Article Navigation >  Journal of Traffic and Transportation Engineering  > 2015  >  15(3): 27-33
Next Previous
LIU Yan-hua, XIE Yong-li. Influence of intermediate principal stress coefficient on character of soft clay under rotation of principal stress axes[J]. Journal of Traffic and Transportation Engineering, 2015, 15(3): 27-33. doi: 10.19818/j.cnki.1671-1637.2015.03.004
Citation: LIU Yan-hua, XIE Yong-li. Influence of intermediate principal stress coefficient on character of soft clay under rotation of principal stress axes[J]. Journal of Traffic and Transportation Engineering, 2015, 15(3): 27-33. doi: 10.19818/j.cnki.1671-1637.2015.03.004
shu

Influence of intermediate principal stress coefficient on character of soft clay under rotation of principal stress axes

doi: 10.19818/j.cnki.1671-1637.2015.03.004

  • School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China

More Information
  • Author Bio:

    LIU Yan-hua(1981-), female, lecturer, PhD, +86-29-82332387, yanhua3537@126.com

  • Received Date: 2015-01-20
  • Publish Date: 2015-06-25
    Abstract
  • A series of undrained shear tests were carried out on Shanghai undisturbed soft clay by using hollow cylinder apparatus.Under the rotation of principal stress axes, the influence of intermediate principal stress coefficient on the deformation and strength character of saturated soft clay was researched.The hollow thin-walled samples of soft clay were consolidated under isotropic consolidation modes.Under 3 kinds of rotation angles of principal stress axes, a series of undrained shear tests were carried out with different intermediate principal stress coefficients.During the shear tests, the deviator stress increased until the sample was destroyed, while average stress, intermediate principal stress coefficient and the rotation angle of principal stress axes remained unchanged.Test result indicates that the deformation behavior and strength character of natural soft clay were obviously different under different intermediate principal stress coefficients.The critical stress ratio and undrained shear strength decrease with the increase of intermediate principal stress coefficient under the three kinds of rotation angles of principal stress axes.When the rotation angle of principal stress axes is 0°, the shear stresses of samples with the intermediate principal stress coefficients of 0.25 and 0.50 decrease after arriving the peak values because of slight strain localization.When the rotation angle of principal stress axes is 90°, and intermediate principal stress coefficients are 0.50 and 0.75, the peak values of shear strength are similar, and the sample states are non-axisymmetrical tensile with unequal inner and outer pressure.Moreover, when the intermediate principal stress coefficient is 1.00, comparing with the coefficients of 0.50 and 0.75, the peak shear strength decreases by 25%, and the sample states are axisymmetrical tensile with equal inner and outer pressure.If the equal internal and external pressures are applied, when the rotation angle of principal stress axes increase from 0° to 90°, the intermediate principal stress coefficient increase from 0 to 1.00, and the critical stress ratio of samples and undrained shear strength decrease.

     

    • FullText(HTML)
    • References(20)
  • [1]
    ZDRAVKOVIĆ L, POTTS D M, HIGHT D W. The effect of strength anisotropy on the behaviour of embankments on soft ground[J]. Géotechnique, 2002, 52(6): 447-457. doi: 10.1680/geot.2002.52.6.447
    [2]
    SHEN Yang, ZHOU Jian, ZHANG Jin-liang, et al. Critical properties of intact soft clay under cyclic principal stress rotation[J]. Journal of Zhejiang University: Engineering Science, 2008, 42(1): 77-82. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-ZDZC200801016.htm
    [3]
    SUN Hong, YUAN Ju-yun, ZHAO Xi-hong. Study on soft soil by the true triaxial tests [J]. Journal of Hydraulic Engineering, 2002(12): 74-78. (in Chinese) doi: 10.3321/j.issn:0559-9350.2002.12.014
    [4]
    HIGHT D W, GENS A, SYMES M J. The development of a new hollow cylinder apparatus for investigating the effects of principal stress rotation in soils[J]. Géotechnique, 1983, 33(4): 355-383. doi: 10.1680/geot.1983.33.4.355
    [5]
    SHEN Rui-fu, WANG Hong-jin, ZHOU Jing-xing. Dynamic strength of sand under cyclic rotation of principal stress directions[J]. Journal of Hydraulic Engineering, 1996(1): 27-33. (in Chinese) doi: 10.3321/j.issn:0559-9350.1996.01.005
    [6]
    HONG W P, LADE P V. Strain increment and stress directions in torsion shear tests[J]. Journal of Geotechnical Engineering, 1989, 115(10): 1388-1401. doi: 10.1061/(ASCE)0733-9410(1989)115:10(1388)
    [7]
    LIN H, PENUMADU D. Experimental investigation on principal stress rotation in Kaolin clay[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2005, 131(5): 633-642. doi: 10.1061/(ASCE)1090-0241(2005)131:5(633)
    [8]
    KANDASAMI R K, MURTHY T G. Experimental studies on the influence of intermediate principal stress and inclination on the mechanical behaviour of angular sands[J]. Granular Matter, 2015, 17(2): 217-230. doi: 10.1007/s10035-015-0554-4
    [9]
    ZDRAVKOVIĆ L, JARDINE R J. The effect on anisotropy of rotating the principal stress axes during consolidation[J]. Géotechnique, 2001, 51(1): 69-83. doi: 10.1680/geot.2001.51.1.69
    [10]
    ZDRAVKOVIĆ L, JARDINE R J. Undrained anisotropy of K0-consolidated silt[J]. Canadian Geotechnique, 2000, 37(1): 178-200. doi: 10.1139/t99-094
    [11]
    ZDRAVKOVIĆ L, JARDINE R J. Some anisotropic stiffness characteristics of a silt under general stress conditions[J]. Géotechnique, 1997, 47(3): 407-437. doi: 10.1680/geot.1997.47.3.407
    [12]
    MINH N A. An investigation of the anisotropic stress-strain-strength characteristics of Eocene clay[D]. London: Imperial College London, 2006.
    [13]
    NISHIMURA S, MINH N A, JARDINE R J. Shear strength anisotropy of natural London clay[J]. Géotechnique, 2007, 57(1): 49-62. doi: 10.1680/geot.2007.57.1.49
    [14]
    NIE Ying, LUAN Mao-tian, WANG Meng, et al. Experimental study on dynamic characteristics of saturated clay under cyclic rotation of principal stress directions[J]. Journal of Liaoning Technical University: Natural Science, 2009, 28(4): 562-565. (in Chinese) doi: 10.3969/j.issn.1008-0562.2009.04.013
    [15]
    SHEN Yang, ZHOU Jian, ZHANG Jin-liang, et al. Research on strength and pore pressure of intact clay considering variation of principal stress direction[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(6): 843-847. (in Chinese) doi: 10.3321/j.issn:1000-4548.2007.06.009
    [16]
    SHEN Yang, ZHOU Jian, GONG Xiao-nan, et al. Experimental study of stress-strain properties of intact soft clay considering the change of principal stress direction[J]. Rock and Soil Mechanics, 2009, 30(12): 3720-3726. (in Chinese) doi: 10.3969/j.issn.1000-7598.2009.12.028
    [17]
    GUAN Lin-bo, ZHOU Jian, ZHANG Xun, et al. Study of influence of parameters of intermediate principal stress and principal strss direction on anisotropy of intact clay[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S2): 3871-3877. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2010S2062.htm
    [18]
    YAN Jia-jia, ZHOU Jian, LIU Zheng-yi, et al. Elasto-plastic deformation behavior of intact clay subjected to principal stress rotation[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33(S2): 4350-4358. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YSLX2014S2121.htm
    [19]
    ZHOU Jian, ZHENG Hong-bin, WEN Xiao-gui, et al. Deformation of intact soft clay under principal stress rotation with effect of intermediate principal stress[J]. Journal of Zhejiang University: Engineering Science, 2011, 45(12): 2134-2141. (in Chinese) doi: 10.3785/j.issn.1008-973X.2011.12.011
    [20]
    SYMES M J, GENS A, HIGHT D W. Drained principal stress rotation in saturated sand[J]. Géotechnique, 1988, 38(1): 59-81. doi: 10.1680/geot.1988.38.1.59
    • Relative Articles
    • Supplements(0)
    • Cited By

Catalog

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (723) PDF downloads(984) Cited by()
    Related

    Copyright《Journal of Traffic and Transportation Engineering》编辑部陕ICP备05001904号-1

    Address ：Editorial Department of Journal of Traffic and Transportation Engineering, Chang 'an University, Middle Section of South Second Ring Road, Xi 'an, Shaanxi（710064） Tel：029-82334388 Email：jygc@chd.edu.cn

    All visit:Today's visit:

    Supported by: Beijing Renhe Information Technology Co. Ltd    

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return