Resumen de Medium-scale resonant wave barrier for seismic surface waves
Farhad Zeighamia, Antonio Palermoa, Athanasios Vratsikidis, Zhibao Cheng, Dimitris Pitilakis, Alessandro Marzani
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.
