Medium-scale resonant wave barrier for seismic surface waves. Issue 8 (13th October 2021)

• Record Type: Journal Article
• Authors: Zeighami, Farhad; Palermo, Antonio; Vratsikidis, Athanasios; Cheng, Zhibao; Pitilakis, Dimitris; Marzani, Alessandro
• Is Part Of: Mechanics based design of structures and machines. Volume 49:Issue 8(2021)
• Page Start: 1157
• Page End: 1172
• Publication Date: 2021-10-13
• Subjects: Seismic metamaterials -- surface waves -- ground vibration mitigation -- dispersion analysis -- metabarrier; Structural analysis (Engineering) -- Periodicals; Structural design -- Periodicals; 624.17
• DOI: 10.1080/15397734.2020.1835487
• Languages: English
• ISSNs: 1539-7734

Abstract

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.