Medium-scale resonant wave barrier for seismic surface waves

• Farhad Zeighamia ^[1] ; Antonio Palermoa ^[1] ; Athanasios Vratsikidis ^[2] ; Zhibao Cheng ^[3] ; Dimitris Pitilakis ^[2] ; Alessandro Marzani ^[1]
  1. [1] University of Bologna

     University of Bologna

     Bolonia, Italia

     
  2. [2] Aristotle University of Thessaloniki

     Aristotle University of Thessaloniki

     Dimos Thessaloniki, Grecia

     
  3. [3] Beijing Jiaotong University

     Beijing Jiaotong University

     China

     

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• Localización: Mechanics based design of structures and machines, ISSN 1539-7734, Vol. 49, Nº. 8, 2021, págs. 1157-1172
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • In this work, we design an experimental campaign to assess the attenuation performance of a medium-scale resonant wave barrier operating within the frequency range of 50–100 Hz. In particular, the dispersive properties of (i) bare soil, (ii) a configuration of “dead masses” placed over the soil surface, and (iii) a locally resonant barrier, also known as metabarrier, are compared numerically. The resonant barrier introduces a significant amplitude reduction of the surface waves in a narrow frequency range around the resonant frequency of the resonators.

    Multiple-frequency barriers are designed with increasing and decreasing resonant frequencies to enlarge the attenuation frequency band.