Bondarev Dmitrii E.
Bondarev Dmitrii E.

Бондарев Дмитрий Евгеньевич Bondarev Dmitrii E.
Cand. Sci. (Engineering), Principal, CKTI-Vibroseism. Saint-Petersburg, Russian Federation 89523684328@mail.ru


Publications

Torsion of Symmetric Structures Located on the Various Systems of Seismic Isolation Subjected to Wave Passage Effect of Earthquake
Issue: №6 2019
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Mathematical model of structure located on various systems of seismic isolation such as laminated rubber bearings and pendulum bearings are considered. This model takes into account torsion of superstructure caused by rotational component of seismic excitation. Rotational component of seismic excitation reflects the wave nature of earthquake. This paper illustrates the torsional response of isolated structure.

Wall damper “WD CVS” as effective device for increasing of seismic performance of metal frames
Issue: #5-2023
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The article discusses the design of a wall damper which is able to dissipate kinetic energy in three orthogonal directions. Such a wall damper is able to significantly reduce seismic loads in metal frame buildings not only from translational, but also from possible rotational seismic impacts. A mathematical model is presented describing the dynamics of a one-story building equipped with a wall damper, the work of which is described by the Maxwell model. The developed wall damper is installed by means of an elastic metal brace. It has been considered that the stiffness of the elastic brace for the effective dissipation of the wall damper should exceed the equivalent stiffness of the damper by at least five times. It is shown how, using the developed mathematical model, it is possible to choose the optimal number of dampers as the first approximation. The optimization criterion is developed. Analysis of the spatial model of metal frame was carried out. The spatial model of the metal frame building subjected to a three-component seismic excitation was analyzed taking into account the selected number of dampers. The developed wall damper reduces the internal forces and displacements of the top of the building by half.