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Investigation of the compressibility of thawing soils by means of a pressure meter
Conclusions 1. The three-dimensional compressibility anisotropy of a thawing soil is determined by the cryogenic constitution of the frozen soil and affects primarily the value of the coefficient of thawing. 2. The generalization of the law of compressive compaction of a thawing soil leads to stress-strain relations containing a parameter which characterizes the initial compressive deformations in the absence of an external load. The concept of the coefficient of thawing as a volumetric strain leads to equations in which the component of initial compression is present independently of the sign of the strain. The first soil model corresponds to collapse and to brittle fracture, and the second, to volumetric contraction of the soil. 3. The model of a structurally unstable thawing soil corresponds closely to the nature of its deformations and permits formulating the pressure-meter problem for a geometrically anisotropic thawing soil. 4. Pressure-meter tests permit determining all the deformation characteristics of a thawing soil.
Investigation of the compressibility of thawing soils by means of a pressure meter
Conclusions 1. The three-dimensional compressibility anisotropy of a thawing soil is determined by the cryogenic constitution of the frozen soil and affects primarily the value of the coefficient of thawing. 2. The generalization of the law of compressive compaction of a thawing soil leads to stress-strain relations containing a parameter which characterizes the initial compressive deformations in the absence of an external load. The concept of the coefficient of thawing as a volumetric strain leads to equations in which the component of initial compression is present independently of the sign of the strain. The first soil model corresponds to collapse and to brittle fracture, and the second, to volumetric contraction of the soil. 3. The model of a structurally unstable thawing soil corresponds closely to the nature of its deformations and permits formulating the pressure-meter problem for a geometrically anisotropic thawing soil. 4. Pressure-meter tests permit determining all the deformation characteristics of a thawing soil.
Investigation of the compressibility of thawing soils by means of a pressure meter
Gur'yanov, I. E. (author) / Valyshev, M. V. (author)
1975
Article (Journal)
English
Local classification TIB:
770/6545/8000
BKL:
56.20
Ingenieurgeologie, Bodenmechanik
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