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Multimodal approach to seismic pavement testing

Journal of Geotechnical and Geoenvironmental Engineering

By:
, , ,
DOI: 10.1061/(ASCE)1090-0241(2004)130:6(636)

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Abstract

A multimodal approach to nondestructive seismic pavement testing is described. The presented approach is based on multichannel analysis of all types of seismic waves propagating along the surface of the pavement. The multichannel data acquisition method is replaced by multichannel simulation with one receiver. This method uses only one accelerometer-receiver and a light hammer-source, to generate a synthetic receiver array. This data acquisition technique is made possible through careful triggering of the source and results in such simplification of the technique that it is made generally available. Multiple dispersion curves are automatically and objectively extracted using the multichannel analysis of surface waves processing scheme, which is described. Resulting dispersion curves in the high frequency range match with theoretical Lamb waves in a free plate. At lower frequencies there are several branches of dispersion curves corresponding to the lower layers of different stiffness in the pavement system. The observed behavior of multimodal dispersion curves is in agreement with theory, which has been validated through both numerical modeling and the transfer matrix method, by solving for complex wave numbers. ?? ASCE / JUNE 2004.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Multimodal approach to seismic pavement testing
Series title:
Journal of Geotechnical and Geoenvironmental Engineering
DOI:
10.1061/(ASCE)1090-0241(2004)130:6(636)
Volume
130
Issue:
6
Year Published:
2004
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
636
Last page:
645
Number of Pages:
10