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Optimizing geotechnical site-investigations
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.ORCID iD: 0000-0001-5243-4650
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.ORCID iD: 0000-0001-9615-4861
Tyréns AB.
2017 (English)In: Proceedings of the 19th International Conference on Soil Mechanics and Geotechnical Engineering, Seoul 2017, 2017, p. 639-642Conference paper, Published paper (Refereed)
Abstract [en]

One major question to deal with in the process of updating the current version of Eurocode 7 is how to convert thequality of a performed site-investigation into a measurable context. This should, in turn, affect the safety factor applied to the soil-strength properties in a limit state. This paper presents a study in which the total uncertainty from the evaluation of undrained shearstrength in clay is assessed from single and multiple site-investigation methods with regard to both random and systematicuncertainties. A Bayesian procedure is used to convert potential reduction of random and systematic uncertainties into a measurablecontext in relation to: (1) the type of site-investigation method, (2) the combination of methods, and (3) the number of measurementsperformed.

Abstract [fr]

L’une des questions majeures qui se posent lors du processus de mise à jour de la version actuelle de l’Eurocode 7est la suivante : comment convertir la qualité d’une investigation de site en une quantité mesurable ? Cela devrait alors affecterle niveau de sécurité appliqué aux propriétés de résistance du sol dans un état limite. Cet article présente une étude au cours de laquelle l’incertitude totale découlant de l’évaluation de la résistance au cisaillement de l’argile non évacuée est évaluée à partir de méthodes d’investigation de site uniques et multiples en relation avec des incertitudes aléatoires et systématiques. Une procédure bayésienne est utilisée pour convertir la réduction potentielle des incertitudes aléatoires et systématiques en une incertitude mesurable en rapport avec : (1) le type de méthode d’investigation de site, (2) la combinaison des méthodes, (3) le nombre de mesures effectuées.

Place, publisher, year, edition, pages
2017. p. 639-642
National Category
Geotechnical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-221082Scopus ID: 2-s2.0-85040043034OAI: oai:DiVA.org:kth-221082DiVA, id: diva2:1173340
Conference
19th International Conference on Soil Mechanics and Geotechnical Engineering, 17 to 21 September 2017, Seoul 2017
Funder
Swedish Research Council Formas
Note

QC 20180115

Available from: 2018-01-12 Created: 2018-01-12 Last updated: 2018-01-15Bibliographically approved

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Prästings, AndersLarsson, Stefan

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