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Dans la catégorie des méthodes de caractérisation des V S 30 et classes de sol, le gagnant est… : Principaux résultats du benchmark « InterPacific »

Abstract : ABSTRACT. The use of reliable characterization methods for site characterization (determination of soil classes, VS30, velocity profiles ...) is a major issue in many cases: application of EC8, site characterization... The methods conventionally used in geotechnics (cross-hole, down-hole) are expensive and need the drilling of boreholes. Other methods, based on the analysis of the dispersion of surface waves are non-invasive, but their processing requires a certain level of expertise and their use has long been criticized. To compare and analyze the differences between these different approaches, three sites benefited from several "invasive" and "non-invasive" measurements, processed by various teams within an international benchmark in a blind context ("InterPacific" project). The variability between results obtained with invasive methods is larger than what we expected initially. Conversely, even if they cannot reach the same vertical resolution, non-invasive methods have produced results much less scattered than what we expected. In terms of V S 30 determination, the resulting standard deviations are equivalent between invasive and non-invasive methods, or even lower for non-invasive methods.
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Submitted on : Sunday, March 25, 2018 - 9:59:51 PM
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Fabrice Hollender, Cécile Cornou, Brady Cox, Flora Garofalo, Sebastiano Foti, et al.. Dans la catégorie des méthodes de caractérisation des V S 30 et classes de sol, le gagnant est… : Principaux résultats du benchmark « InterPacific » . 9ème Colloque National AFPS2015, AFPS / IFSTTAR, Nov 2015, Marne-la-Vallée, France. ⟨insu-01742653⟩

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