Vladimir A. Tarasov
Vladimir A. Tarasov

Vladimir A. Tarasov
JSC Atomenergoproekt St. Petersburg Branch - St. Petersburg Design Institute; graduate student of the Higher School of Industrial, Civil and Road Construction, Institute of Civil Engineering, Peter the Great Saint Petersburg Polytechnic University

ORCID: https://orcid.org/0000-0002-1030-8370


Publications

Selection the parameters of spring-damper insulation of the turbine building with a vibration-isolated turbine foundation inside
Issue: #6-2022
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Seismic isolation is the most effective way to achieve seismic resistance of buildings and structures, the equipment located inside. The energy center of any power plant is its turbine unit - the main equipment responsible for generating electricity. The seismic stability of the turbine unit is ensured primarily by the fulfillment of the seismic resistance criteria by the turbine unit foundation – a special building structure that combines the parts of the turbine unit into a single system and serves to take static and dynamic loads.

Achievement of seismic resistance of the turbine unit foundation of a power plant through the use of various seismic isolation systems is a topical issue discussed in this article.

Dynamic calculations were performed in Nastran software using time history analysis and the finite element method. The main criteria for the seismic resistance of a vibration-insulated turbine foundation are the values of the maximum seismic accelerations in the axial direction at the level of the turbine installation and the values of vibration-insulated foundation maximum seismic deformations of vibration isolators.

In the research, seismic calculations of the turbine unit foundation with various parameters of the double seismic isolation system of the turbine unit were performed. The results made it possible to evaluate the influence of the parameters of the turbine building spring-damper insulation on the seismic resistance of the vibration-insulated turbine unit foundation.

Seismic stability of vibration-insulated turbine foundations
Issue: #5-2021
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The turbogenerator set foundation is a special building structure that unites parts of the turbine and generator unit into a single system and it is used for static and dynamic loads accommodation. The number of designed and constructed power plants in high seismic level areas is large.

Seismic isolation is the most effective way to achieve earthquake resistance of equipment located inside buildings and structures. Achievement of seismic stability power plant turbine foundation by applying a variety of design solutions and seismic isolation systems is a significant issue.

Dynamic calculations were performed in Nastran software using time history analysis and the finite element method. The main criteria for the seismic resistance of a vibration-insulated turbine foundation are the values of the maximum seismic accelerations in the axial direction at the level of the turbine installation and the values of vibration-insulated foundation maximum seismicdeformations of vibration isolators.

The results of computational experiments during investigations allow to estimate the effect of the following factors on seismic resistance of vibration isolated turboset foundations:

- different frequency composition of seismic impact;

- use of vibration isolators of different stiffness;

- accounting of frequency dependence of viscous dampers characteristics;

- use of different calculation methods and computational models.