Applied Mathematics and Mechanics (English Edition) ›› 2003, Vol. 24 ›› Issue (2): 123-137.

• 论文 •    下一篇

CONSTITUTIVE RELATION OF UNSATURATED SOIL BY USE OF THE MIXTURE THEORY(Ⅰ)-NONLINEAR CONSTITUTIVE EQUATIONS AND FIELD EQUATIONS

黄义1, 张引科1,2   

  1. 1. Science College, Xi’an University of Architecture & Technology, Xi’an 710055, P.R.China;
    2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, P.R. China
  • 收稿日期:2001-08-20 修回日期:2002-06-04 出版日期:2003-02-18 发布日期:2003-02-18
  • 通讯作者: HUANG Yi
  • 基金资助:

    the National Natural Science Foundation of China (59678003);Special Research Plan of the Education Department of Shaanxi Province (01JK178)

CONSTITUTIVE RELATION OF UNSATURATED SOIL BY USE OF THE MIXTURE THEORY(Ⅰ)-NONLINEAR CONSTITUTIVE EQUATIONS AND FIELD EQUATIONS

HUANG Yi1, ZHANG Yin-ke1,2   

  1. 1. Science College, Xi’an University of Architecture & Technology, Xi’an 710055, P.R.China;
    2. Department of Geotechnical Engineering, Tongji University, Shanghai 200092, P.R. China
  • Received:2001-08-20 Revised:2002-06-04 Online:2003-02-18 Published:2003-02-18
  • Supported by:

    the National Natural Science Foundation of China (59678003);Special Research Plan of the Education Department of Shaanxi Province (01JK178)

摘要: The nonlinear constitutive equations and field equations of unsaturated soils were constructed on the basis of mixture theory. The soils were treated as the mixture composed of three constituents. First, from the researches of soil mechanics, some basic assumptions about the unsaturated soil mixture were made, and the entropy inequality of unsaturated soil mixture was derived. Then, with the common method usually used to deal with the constitutive problems in mixture theory, the nonlinear constitutive equations were obtained. Finally, putting the constitutive equations of constituents into the balance equations of momentum, the nonlinear field equations of constituents were set up. The balance equation of energy of unsaturated soil was also given, and thus the complete equations for solving the thermodynamic process of unsaturated soil was formed.

Abstract: The nonlinear constitutive equations and field equations of unsaturated soils were constructed on the basis of mixture theory. The soils were treated as the mixture composed of three constituents. First, from the researches of soil mechanics, some basic assumptions about the unsaturated soil mixture were made, and the entropy inequality of unsaturated soil mixture was derived. Then, with the common method usually used to deal with the constitutive problems in mixture theory, the nonlinear constitutive equations were obtained. Finally, putting the constitutive equations of constituents into the balance equations of momentum, the nonlinear field equations of constituents were set up. The balance equation of energy of unsaturated soil was also given, and thus the complete equations for solving the thermodynamic process of unsaturated soil was formed.

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