圧密現象の物理的考察〔英文〕

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During an attempt to systematize the theory of consolidation on the assumption that the deformation of clayey material obeys the law of isotropic elasticity, the physical background of Biot's theory of three-dimensional consolidation (J. Appl. Phys. 12, 155 (1941)) has become clear. The fundamental equations are constructed directly for the system of clay particles, whose pores are saturated with water. The external force which plays the essential part in the process of consolidation is the frictional traction between water and particles. The equation of excess-hydraulic pressure is similar to the equation of conduction of heat only in one-dimensional consolidation under steady surcharge. The constancy of the modulus of volume change, introduced by Tschebotarioff (Soil Mechanics. Foundations and Earth Pressure (1952), p.105), signifies the isotropic elasticity of the material. Its constancy, however, cannot be secured for clays, and the assumption of isotropic elasticity does not hold well for clayey foundations, though Terzaghi's theory of consolidation is based on this assumption. It is evident that systematic research is necessary to establish a theory of three-dimensional consolidation.
宇宙航空研究開発機構の論文
1954-12-04