Features of the Calculation of Engineering Preparation in the Territory with Active Tectonic Processes

The article deals with the issues of computational justification of an industrial facility, the uniqueness of which lies in its location in a territory with active tectonic processes. Taking into account the complexity of the relief of the construction area of the facility, which is characterized by a significant difference in absolute elevations, the issues of determining the stability of the engineering preparation of the territory, as well as the bearing capacity and stress-strain state of the foundation of the structure under the application of static, seismic and tectonic effects are considered. The study of the influence of hazardous effects was carried out by a numerical method using a specialized software package PLAXIS in a three-dimensional formulation. Seismic loading was specified as an equivalent quasi-static loading, corresponding to the maximum intensity of the object’s territory. Tectonic impacts were set in the form of prescribed displacements in accordance with the features of the location of faults and the rate of slow displacements of tectonic units, which were studied in the course of specialized surveys. The performed calculations, taking into account seismic and tectonic impacts, showed a significant effect of the first impact on the stability of the constructed arrays of engineering preparation of the object in the form of a significant drop in the stability coefficient, and the second in the form of large additional vertical displacements of the soil mass, which is the soil base of the industrial facility foundations. An analysis of the performed numerical calculations shows that even in the case of slow shear tectonic displacements of up to 250 mm for 50 years, it leads to large displacements at the top of the embankments being erected for engineering preparation, and hence to significant impacts on the designed structures of the industrial structure itself. The distribution iso-fields of such movements along the massifs of embankments have been obtained, which will make it possible to take compensatory measures to equalize uneven movements that will be implemented for a long time.

G.O. ANZHELO, Candidate of Sciences (Engineering), Head of SEC “Geotechnics” named after Z.G. Ter-Martirosyan, Associate Professor of the Department of MGIG NRU MGSU (This email address is being protected from spambots. You need JavaScript enabled to view it.),
V.V. SIDOROV, Candidate of Sciences (Engineering), Associate Professor (This email address is being protected from spambots. You need JavaScript enabled to view it.),
A.N. SHEBUNYAEV, Postgraduate

National Research Moscow State University of Civil Engineering (26, Yaroslavskoe Highway, Moscow, 129337, Russian Federation)

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