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Geophysical provision of seismic resistance of atomic energy objects and other potentially hazardous objects

Work number - M 21 AWARDED

Presented Institute of Geophysics of the National Academy of Sciences of Ukraine

Ph.D. Semenova Yu.V.

The aim of the work is to develop a methodology for calculating the spectral characteristics of soils, taking into account nonlinear deformation under seismic influences of various intensities to ensure the seismic resistance of potentially dangerous objects.

The methodology is based on an analytical and empirical approach to calculating the frequency characteristics of soils. In this work, the problem of taking into account the nonlinear response of the soil to seismic loads is solved and it is shown that nonlinearity leads to a significant change in the amplitude, shape and spectrum of seismic vibrations. An algorithm has been developed for constructing calculated seismic-geological models of the layered soil stratum for non-linear analysis of the soil response to seismic effects. In this case, the empirical strain-dependent shear modulus and damping ratio from the database created by the author are used. Recommendations on the use of methods of linear, equivalent linear and nonlinear ground response analyses to seismic effects for sites in Ukraine with different categories of soils by seismic properties and various predicted seismic intensities are proposed.

The results of the work were implemented at PJSC Ukrgidroenergo, NNEGC Energoatom, State "Research institute of building production named of V.S. Balitsky", DP SeismoBud.

The proposed methodology was implemented in assessing the quantitative parameters of the seismic hazard of the Tashlykskaya PSPP, the South Ukrainian NPP, the Yagotin compressor station, the Kremenchug HPP, the  Bortnychi aeration station, pipeline pumping station "Kremenchug - Ananiev - Bohorodchany"and other objects.

Number of publications: 46, including 21 articles and 25 reports, of which 8 are presented in the Scopus and Web of Science databases. The total number of links to publications of authors / h-index of work according to the databases is: Google Scholar – 25/3.