Reduced-scale ultrasonic modelling of Rayleigh wave transmission over seismic barriers formed by periodic arrays of vertical holes
Seismic barriers are used widely to protect buildings from traffic-induced ground vibrations, mainly from propagating Rayleigh surface waves. Experimental investigations of real size seismic barriers at frequencies typical for traffic-induced ground vibrations, i.e., at 10-100 Hz, are
costly and time-consuming. In the present work, an alternative and much less expensive approach is proposed — a reduced-scale experimental modeling using ultrasonic Rayleigh wave propagation over very smallscale replicas of real seismic barriers. Experimental investigations of propagation
of Rayleigh wave pulses with the central frequency of 1 MHz have been carried out for seismic barriers formed by periodic arrays of vertical holes in aluminum samples. Measurements of transmission and reflection coefficients of Rayleigh waves for different types of arrays and for different
incident angles have been carried out and compared with the earlier published results obtained for real seismic barriers.
Document Type: Research Article
Affiliations: Department of Aeronautical and Automotive Engineering, Loughborough University
Publication date: 01 January 2018
NCEJ is a peer reviewed Technical journal published every two months. The papers published in NCEJ cover general topics related to noise control engineering, ranging from fundamental research to applied case studies and histories.
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