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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 articleEstimation of seismic stability of layered soil bases composed of clays and water-saturated sandstones
Abstract.The raising the level of groundwater and the presence of tectonic faults provoked an increase in the level of seismic activity considered territory of the Republic of Tatarstan. The considered territory is composed of alternating layers of clay and water-saturated sandstone at a depth of 28 m. Soils are at the base of groundwater fluctuations. To study the dynamic stability of the layers of clay and water-saturated sandstones with the position estimate of their liquefaction at seismic impacts, relevant project (forecast) seismic activity area, conducted laboratory tests equivalent to the power relation to seismic impact triaxial cyclic loading. Experimental studies of resistance to vibration dilution series of 143 samples of soil (three specimens - twin in each series) in the stabilometry under cyclic loading with option equivalent to the scenario earthquake with an intensity of 6,5 points established for the construction site. Results of the study are given in Table partially. During experimental studies established the basic parameters characterizing the state of sandy and clay soils under cyclic loading: longitudinal and radial deformation, pore pressure, and mean effective stress. According to the results of a series of experiments established characteristic pattern of destruction of the samples. The authors have formulated the criteria for soil liquefaction. Analysis of the results of experimental studies concluded that when forecasting earthquakes with an intensity of 6,5 points on the MSK 64 soils of the site are considered dynamically stable.
Keywords.water-saturated sandstone, clay, dynamic loading, triaxial compression, seismic action, soil deformation, vibration liquefaction, pore pressure, accelerogram
For citations:Mirsayapov I.Т., Koroleva I.V. Estimation of seismic stability of layered soil bases composed of clays and water-saturated sandstones // Izvestiya KGASU. 2015. №1(31) P.99-106.


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