IX INTERNATIONAL CONFERENCE
CONTEMPORARY ACHIEVEMENTS IN
CIVIL ENGINEERING
BOOK OF ABSTRACTS , 2024.god., str. 3-3
RESPONSE SPECTRA OF RECORDING OF VRANCEA EARTHQUAKES OF 1977 AND 1986| |
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| DOI: 10.14415/CACE2024.01 |
| UDK: 550.34.016 |
| CC-BY-SA 4.0 license |
| Autor : Folić, Boris; Čokić, Miloš; Folić, Radomir |
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| | Rezime: |
| | Response spectra are used in the design of seismically resistant structures, and evaluation of (ground motion records) accelerograms. The spectrum represents the set of maximum responses of a series of systems with one degree of freedom (SDOF) using the method of linear dynamic analysis. The aim is to use the spectrum to cover as much of the frequency range of the respective location as possible. The paper discusses the response spectra of the Vrancea earthquake records in 1977 and 1986 and one spectrum of the Imperial Valley. These diagrams-spectra indicate the possibility of significant amplifications of structures and the occurrence of resonance effects if the natural period of the structure coincides with the maximum values of the spectrum. The positions of the Vrancea 86 measuring stations are in different locations and soil-structure conditions, but they are arranged on the semicircle of the Carpathians. The theoretical foundations of response spectra including the Fourier transform (FT) and inverse transform (IFT) as well as fast FT (FFT and IFFT) are briefly commented. |
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| | Ključne reči: |
| | RESPONSE SPECTRA, SDOF, FAST FOURIER TRANSFORM FFT, VRANCEA 86, VRANCEA 77, SEISMOSPECT |
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