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.
Medium-scale resonant wave barrier for seismic surface waves / Zeighami F.; Palermo A.; Vratsikidis A.; Cheng Z.; Pitilakis D.; Marzani A.. - In: MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES. - ISSN 1539-7734. - ELETTRONICO. - 49:8(2021), pp. 1157-1172. [10.1080/15397734.2020.1835487]
Medium-scale resonant wave barrier for seismic surface waves
Zeighami F.Primo
Membro del Collaboration Group
;Palermo A.Secondo
Membro del Collaboration Group
;Marzani A.
Ultimo
Membro del Collaboration Group
2021
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
