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Zhao Chenggang, Liu Zhenzhen, Li Jian, Liu Yan, Cai Guoqing. EFFECTIVE STRESS IN SOIL MECHANICS AND THE DISCUSSIONS ABOUT ITS FUNCTIONS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2): 356-361. DOI: 10.6052/0459-1879-14-189
Citation: Zhao Chenggang, Liu Zhenzhen, Li Jian, Liu Yan, Cai Guoqing. EFFECTIVE STRESS IN SOIL MECHANICS AND THE DISCUSSIONS ABOUT ITS FUNCTIONS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2): 356-361. DOI: 10.6052/0459-1879-14-189
shu

EFFECTIVE STRESS IN SOIL MECHANICS AND THE DISCUSSIONS ABOUT ITS FUNCTIONS

  • 1.

    School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China

  • 2. College of Civil Engineering and Architecture, Guilin University of Technology, Guangxi Guilin 541004, China

Funds: The project was supported by the National Natural Science Foundation of China (51278047,51478135) and the Fundamental Research Funds for the Central Universities (2013YJS066).
  • Received Date: May 26, 2014
  • Revised Date: July 21, 2014
    Graphical Abstract
    • Abstract
  • This paper starts with a discussion of the effective stress functions for saturated soils, and then some situations of the theoretical predicting uncertainties in soil mechanics are stated. The relationship between the total stress and stress of each phase in unsaturated soils is developed based on three-phrase equilibrium equations of a representative element volume (REV). The expression of average soil skeleton stress, defined as effective stress, for unsaturated soils is then derived. This expression is consistent with the effective stress equation in unsaturated soils derived based on deformation work in the energy conservation equation. Then some discussions on the effective stress of unsaturated soil are given.
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  • Terzaghi K. Die berechnung der durchlässigkeitsziffer des tonesaus dem verlauf der ydrodynamischen span-nungserscheinungen. Sitzbericht (Abt II a) Akademis der Wissenschaften, Vienna, 132
    赵成刚, 白冰, 王运霞. 土力学原理(修订本). 北京: 清华大学出版社, 北京交通大学出版社, 2009. 189-190 (Zhao Chenggang, Bai Bing, Wang Yunxia. Fundamentals of Soil Mechanics. Beijing: Tsinghua University Press, Beijing Jiaotong University Press, 2009. 189-190 (in Chinese))
    陈正汉, 秦冰. 非饱和土应力状态变量的研究. 岩土力学,2012, 33(1): 1-11 (Chen Zhenghan, Qin Bing. On stress state variables of unsaturated soils. Rock and Soil Mechanics, 2012, 33(1): 1-11 (in Chinese))
    Wheeler SJ, Sharma RS, Buisson MSR. Coupling of hydraulic hysteresis and stress-strain behaviour in unsaturated soils. Géotechnique, 2003, 53(1): 41-54  G" target=_blank>
    Houlsby GT. The work input to an unsaturated granular material. Géotechnique, 1997, 47(1): 193-196  G" target=_blank>
    Zhao CG, Liu Y. Work and energy equations and the principle of generalized effective stress for unsaturated soils. International Journal for Numerical and Analytical Methods in Geomechanics, 2010, 34(6): 920-936
    Bishop AW. The principle of effective stress. Teknisk Ukeblad, 1959, 106(39): 859-863
    Jennings JEB, Burland JB. Limitations to the use of effective stresses in unsaturated soils. Géotechnique, 1962, 12: 125-144
    Fredlund DG, Morgenstern NR. Stress state variables for unsaturated soils. Journal of the Geotechnical Engineering Division, ASCE, 1977, 103(5): 447-466
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