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Extended multivariate approach for uncertainty reduction in the assessment of undrained shear strength in clays
Tyréns AB.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.ORCID iD: 0000-0001-9615-4861
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Soil and Rock Mechanics.ORCID iD: 0000-0001-5372-7519
2014 (English)In: Canadian geotechnical journal (Print), ISSN 0008-3674, E-ISSN 1208-6010, Vol. 51, no 3, 231-245 p.Article in journal (Refereed) Published
Abstract [en]

Important features of the multivariate approach are discussed, and an extension to this approach is proposed whereby the total uncertainty in site investigation methods due to spatial averaging is assessed prior to its adoption. Results from a site investigation of spatially averaged values of undrained shear strength (S-u) and the corresponding coefficient of variation (COVSu) in Veda sulphide clay were used as a practical illustration of the extended multivariate approach and provide a basis for discussion. The inherent variability and scales of fluctuation for different methods are presented. The study shows the usefulness of the extended multivariate approach for the evaluation of representative values of S-u and COVSu based on results from different methods. It is also a way of implicitly reducing the transformation errors that arise when a property is derived from measurement results. Nevertheless, considerable care must be taken as a much lower COV for one method will have a significant impact on the results.

Place, publisher, year, edition, pages
2014. Vol. 51, no 3, 231-245 p.
Keyword [en]
sulphide clay, undrained shear strength, embankments, statistical analysis, uncertainty, multivariate approach
National Category
Geotechnical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-122884DOI: 10.1139/cgj-2012-0176ISI: 000332536500001Scopus ID: 2-s2.0-84895521715OAI: oai:DiVA.org:kth-122884DiVA: diva2:623872
Note

QC 20140422

Available from: 2013-05-29 Created: 2013-05-29 Last updated: 2017-12-06Bibliographically approved
In thesis
1. Probabilistic stability analysis of embankments founded on clay
Open this publication in new window or tab >>Probabilistic stability analysis of embankments founded on clay
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. xviii, 74 p.
Series
Trita-JOB PHD, ISSN 1650-9501 ; 1018
National Category
Earth and Related Environmental Sciences
Identifiers
urn:nbn:se:kth:diva-122886 (URN)
Public defence
2013-06-04, Sal B1, Brinellvägen 23, Brinellvägen 23, KTH, Stockholm, 13:00 (English)
Opponent
Supervisors
Note

QC 20130529

Available from: 2013-05-29 Created: 2013-05-29 Last updated: 2013-05-29Bibliographically approved

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Larsson, StefanSpross, Johan

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