Sinusoidally located concrete metastructures for attenuation of seismic surface vibrations

Kacin S., Ozturk M., Sevim U. K., Karaaslan M., Akgol O., Ozer Z., ...Daha Fazla

NATURAL HAZARDS, cilt.116, sa.1, ss.551-563, 2023 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 116 Sayı: 1
  • Basım Tarihi: 2023
  • Doi Numarası: 10.1007/s11069-022-05688-y
  • Dergi Adı: NATURAL HAZARDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, IBZ Online, PASCAL, Aerospace Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Communication Abstracts, Environment Index, Geobase, INSPEC, Metadex, PAIS International, Pollution Abstracts, Veterinary Science Database, DIALNET, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.551-563
  • Anahtar Kelimeler: Surface vibration, Seismic metamaterials, Low frequency, Attenuation, Experimental measurement, METAMATERIALS, COLUMN
  • Bursa Uludağ Üniversitesi Adresli: Hayır

Özet

In this numerical and experimental study, we designed sinusoidal located concrete-based boreholes which are candidate for seismic shielding applications. To attenuate seismic wave transmission in an area, proposed design is created in most dangerous part of seismic frequencies which corresponds 1-15 Hz band. Firstly, transmission loss characteristics of proposed design is obtained numerically, and it is clearly shown that proposed design has multiband blocking capability. Afterwards, total surface displacements were plotted, analysed and explained. Thus, proposed design attenuates seismic wave transmission according to numerical results. Moreover, to support proposed design, various experimental measurements were carried out by using a harmonic vibration source and 14 accelerometers as sensors. Experiments conducted in time domain and obtained results were converted to the frequency domain by fast Fourier transform, and mapping processes were done by interpolation technique. The obtained measured map of the seismic radiation between 5 and 15 Hz bands is given, and a good matching between simulations and experiments has been seen. As obtained numerical and experimental results, the proposed metamaterial structure could be used in seismic shielding applications because of its highly blocking capability of seismic wave transmission.