Azbaid et al Proc ISMA 2016 - preliminary.pdf (1.01 MB)

Reduced-scale ultrasonic modelling of Rayleigh wave transmission over seismic barriers

Download (1.01 MB)
conference contribution
posted on 13.10.2016, 09:38 by Abdelhalim Azbaid El Ouahabi, Victor V. Krylov
Several types of seismic barriers have been proposed in the past to protect buildings from traffic-induced ground vibrations, mainly from propagating Rayleigh surface waves. In many cases the developers are forced to use direct experimental measurements on real size seismic barriers at frequencies typical for traffic-induced ground vibrations, i.e. at 10-100 Hz. As an alternative and much less expensive approach, a reduced-scale experimental modelling using ultrasonic Rayleigh wave propagation over very small-scale replicas of real seismic barriers is considered in the present work. Rayleigh wave pulses with the central frequency of 1 MHz have been used, which corresponds to the value of scaling factor about 1:1000. Propagation over three types of seismic barriers was investigated: 1) arrays of periodic vertical holes, 2) Combinations of periodically positioned trenches, including a single trench, and 3) statistically rough surfaces. The results of the measurements of transmission and reflection coefficients are presented.

Funding

The research reported here has been supported by EPSRC grant EP/K038214/1.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

27th International Conference on Noise and Vibration Engineering, 'ISMA 2016' Proceedings of the ISMA 2016

Pages

1829 - 1842

Citation

AZBAID EL OUAHABI, A. and KRYLOV, V.V., 2016. Reduced-scale ultrasonic modelling of Rayleigh wave transmission over seismic barriers. Presented at the 27th International Conference on Noise and Vibration Engineering, (ISMA 2016), Leuven, Belgium, 19th-21st Sept., pp. 1829-1842.

Publisher

KU Leuven

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

15/08/2016

Publication date

2016

Notes

This is a conference paper.

Language

en

Location

Leuven, Belgium

Usage metrics

Loughborough Publications

Keywords

Exports