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Abstract

Summary

The applied technique for considering the dynamic effects on geotechnical structures in the compacted urban development conditions with the direct dynamic calculations and taking into account the experimentally obtained accelerograms is developed. The method includes the visual and vibrodynamic inspections of the new building in the existing geotechnical environment and of the vibrodynamic influence sources. The determination of the soil and building structures dynamic characteristics is based on their free vibrations with small amplitudes caused by natural or man-made microseisms and includes the vibrations recording by means of the highly sensitive (in our case - accelerometric) sensors; the Fourier spectra calculations and analysis in order to isolate the resonance peaks corresponding to the various forms of the free vibrations; the inverse Fourier transform use for obtaining the impulse implementations of the selected resonance peaks for each form of the design free vibrations; the identification and graphical representation of the various forms vibrations of the investigated soil, geotechnical structures, etc. The vibrodynamic investigations of the soil and individual buildings structures at the Poshtova Square for the determination of the actual dynamic loads on the soil and pit retaining walls at the construction site are exemplified.

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2023-09-18
2025-12-08
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