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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Mirsayapov I.Т. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Koroleva I.V. – candidate of technical sciences, associate professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Kazan State University of Architecture and Engineering The organization address: 420043, Russia, Kazan, Zelenaya st., 1
Title of the articleEvaluation of the strength and deformability of clay soils under loading regime, taking into account the degradation of the soil structure
Abstract.Existing analytical methods for the calculation of the bearing capacity and sediment grounds not to take into account the peculiarities of stress-strain state of the soil under the simultaneous action of cyclic regime and long-term static loading, which undergoes base in the real world, which leads to a discrepancy between the estimated and actual values. The main reason for the discrepancy is that modern computational models of soils do not take into account that the process of nonlinear volume deformation in time with a combination of load cases is accompanied by complex physical and physic-chemical phenomena, changes in the orientation of the mineral particles and slip planes in space and dilatancy. In conditions of triaxial clay soils destructive processes and the process of destruction is localized to sites of limit equilibrium. Based on the results of the analysis of experimental and theoretical studies of the author assumed that the destruction of the clay soil occurs when the total length of the micro cracks in the zone limit equilibrium reaches critical limits. Micro cracks in the zone limit unstable equilibrium develops: stand infancy, accumulation submicrocracks, turning them into micro- and macro-cracks and abrupt development to the critical value. Using the calculated fracture mechanism of elastic-visco-plastic bodies, proposed equations describing the change of the basic mechanical properties of soils – specific cohesion and angle of internal friction of clay soils over time.
Keywords.regime loading, triaxial compression, micro- and macro-cracks, deformation of soil, specific cohesion, contour integral, dilatancy, deviator.
For citations:Mirsayapov I.Т., Koroleva I.V. Evaluation of the strength and deformability of clay soils under loading regime, taking into account the degradation of the soil structure // Izvestiya KGASU. 2014. №4(30) P.205-213.


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