PERFORMANCE ANALYSIS OF SEISMIC-INSULATING KINEMATIC FOUNDATIONS ON SUPPORT ELEMENTS WITH NEGATIVE STIFFNESS

Equations are derived for the vibrations of a building on the foundations under consideration. Impossibility of use of traditional methods of the linear-spectral theory for analysis of their earthquake resistance is demonstrated. It is established that the systems under consideration do not possess a natural vibration period, and may have ambiguous solutions for forced vibrations. Algorithms are proposed for evaluation of the earthquake resistance of buildings on such foundations. The possibility of high efficiency of use of the indicated foundations is noted with correct assignment of their parameters.