Detection des cavites sous les pavages par l'analyse modal des ondes de rayleigh (masw). Karray, M. & Lefebvre, G. Canadian Geotechnical Journal, 46(4):424 - 437, 2009. Cavity;Foundation soils;High frequency HF;Interpretation methods;Pavement surface;Roads and highways;Shear wave velocity;Spectral analysis of surface waves;![Detection des cavites sous les pavages par l'analyse modal des ondes de rayleigh (masw) [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper abstract bibtex The problem of cavities beneath pavements near culverts is related to soil erosion through defective culverts. Chimneys develop until subsidence occurs, then a sinkhole appears on the road pavement. The appearance of a sinkhole on the pavement is dangerous for road users, especially for busy roads and highways (high-frequency traffic). The use of surface waves for foundation soil characterisation below the pavement is challenging, as soil excitation through a rigid pavement is difficult. The modal analysis of surface waves (MASW) method allows placing sensors on the pavement surface and exciting the soil outside the pavement. This configuration was tested using numerical simulations and showed that it is possible to characterise soil beneath a relatively rigid pavement surface structure. MASW tests were also performed on site, where cavities of known dimensions were created by making apertures in the top of a road culvert. Data analysis permitted the elaboration of a rapid interpretation method, adapted to cavity or weak zone detection beneath road pavement. © 2009 NRC Canada.
@article{20092512133388 ,
language = {French},
copyright = {Compilation and indexing terms, Copyright 2023 Elsevier Inc.},
copyright = {Compendex},
title = {Detection of cavities beneath pavements by modal analysis of surface waves (Rayleigh waves) (MASW)},
title = {Detection des cavites sous les pavages par l'analyse modal des ondes de rayleigh (masw)},
journal = {Canadian Geotechnical Journal},
author = {Karray, Mourad and Lefebvre, Guy},
volume = {46},
number = {4},
year = {2009},
pages = {424 - 437},
issn = {00083674},
abstract = {The problem of cavities beneath pavements near culverts is related to soil erosion through defective culverts. Chimneys develop until subsidence occurs, then a sinkhole appears on the road pavement. The appearance of a sinkhole on the pavement is dangerous for road users, especially for busy roads and highways (high-frequency traffic). The use of surface waves for foundation soil characterisation below the pavement is challenging, as soil excitation through a rigid pavement is difficult. The modal analysis of surface waves (MASW) method allows placing sensors on the pavement surface and exciting the soil outside the pavement. This configuration was tested using numerical simulations and showed that it is possible to characterise soil beneath a relatively rigid pavement surface structure. MASW tests were also performed on site, where cavities of known dimensions were created by making apertures in the top of a road culvert. Data analysis permitted the elaboration of a rapid interpretation method, adapted to cavity or weak zone detection beneath road pavement. © 2009 NRC Canada.<br/>},
key = {Surface waves},
keywords = {Pavements;Culverts;Soils;Shear flow;Modal analysis;Spectrum analysis;Shear waves;Wave propagation;},
note = {Cavity;Foundation soils;High frequency HF;Interpretation methods;Pavement surface;Roads and highways;Shear wave velocity;Spectral analysis of surface waves;},
URL = {http://dx.doi.org/10.1139/T09-009},
}
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