粘土の応力ヒズミ関係について

Abstract

The results of experimental study of deformations, pore-water pressures and shear stren-gths of normally consolidated clay in 02- o3-plane are presented.Axial strian controled and stress controled triaxial compression and extension tests andstress relaxation tests of remolded and reconsolidated clay were performed in the undrainedcondition. During the shearing tests, applied stress were controled so that radial stress, axialstress or the mean value of the three pincipal stesses may be kept dnstant. The failurestrain of the clay is almost same value in the all tests, I.e. about 10% of axial strain, andstrength of the clay is expected by the Mohr-Coulomb theory. The pore-water pressureinduced by the dilatancy is a function of the magnitude of the oxtahedral shear stress, and is not affected by its direction.