On characteristic values for calculating factors of safety for dyke stability

D. Varkey; M.A. Hicks; A.P. van den Eijnden; P.J. Vardon

doi:10.1680/jgele.19.00034

On characteristic values for calculating factors of safety for dyke stability

D. Varkey, M.A. Hicks, A.P. van den Eijnden, P.J. Vardon

Geo-engineering

Research output: Contribution to journal › Article › Scientific › peer-review

56 Downloads (Pure)

Abstract

Various simplified approaches are used to calculate the characteristic values of shear strength properties, which have then been used in deterministic stability analyses of a dyke cross-section. The calculated factors of safety are compared with the 5-percentile ‘system response’ of the dyke cross-section, calculated using the more exhaustive random finite-element method (RFEM), which is consistent with the requirements of Eurocode 7. The simplified methods accounting for variance reduction due to averaging of property values mostly give factors of safety within 10% of the RFEM solution, whereas the factor of safety based on the 5-percentile material properties is significantly over-conservative.

Original language	English
Pages (from-to)	353-359
Number of pages	7
Journal	Geotechnique Letters
Volume	10
Issue number	2
DOIs	https://doi.org/10.1680/jgele.19.00034
Publication status	Published - 2020

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

numerical modelling
slopes
statistical analysis

Access to Document

10.1680/jgele.19.00034

jgele.19.00034Final published version, 565 KB

Cite this

@article{866d60c3d38247ce9f5da5432e517623,

title = "On characteristic values for calculating factors of safety for dyke stability",

abstract = "Various simplified approaches are used to calculate the characteristic values of shear strength properties, which have then been used in deterministic stability analyses of a dyke cross-section. The calculated factors of safety are compared with the 5-percentile {\textquoteleft}system response{\textquoteright} of the dyke cross-section, calculated using the more exhaustive random finite-element method (RFEM), which is consistent with the requirements of Eurocode 7. The simplified methods accounting for variance reduction due to averaging of property values mostly give factors of safety within 10% of the RFEM solution, whereas the factor of safety based on the 5-percentile material properties is significantly over-conservative.",

keywords = "numerical modelling, slopes, statistical analysis",

author = "D. Varkey and M.A. Hicks and {van den Eijnden}, A.P. and P.J. Vardon",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.",

year = "2020",

doi = "10.1680/jgele.19.00034",

language = "English",

volume = "10",

pages = "353--359",

journal = "Geotechnique Letters",

issn = "2045-2543",

publisher = "ICE Publishing Ltd.",

number = "2",

}

TY - JOUR

T1 - On characteristic values for calculating factors of safety for dyke stability

AU - Varkey, D.

AU - Hicks, M.A.

AU - van den Eijnden, A.P.

AU - Vardon, P.J.

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2020

Y1 - 2020

N2 - Various simplified approaches are used to calculate the characteristic values of shear strength properties, which have then been used in deterministic stability analyses of a dyke cross-section. The calculated factors of safety are compared with the 5-percentile ‘system response’ of the dyke cross-section, calculated using the more exhaustive random finite-element method (RFEM), which is consistent with the requirements of Eurocode 7. The simplified methods accounting for variance reduction due to averaging of property values mostly give factors of safety within 10% of the RFEM solution, whereas the factor of safety based on the 5-percentile material properties is significantly over-conservative.

AB - Various simplified approaches are used to calculate the characteristic values of shear strength properties, which have then been used in deterministic stability analyses of a dyke cross-section. The calculated factors of safety are compared with the 5-percentile ‘system response’ of the dyke cross-section, calculated using the more exhaustive random finite-element method (RFEM), which is consistent with the requirements of Eurocode 7. The simplified methods accounting for variance reduction due to averaging of property values mostly give factors of safety within 10% of the RFEM solution, whereas the factor of safety based on the 5-percentile material properties is significantly over-conservative.

KW - numerical modelling

KW - slopes

KW - statistical analysis

UR - http://www.scopus.com/inward/record.url?scp=85100812394&partnerID=8YFLogxK

U2 - 10.1680/jgele.19.00034

DO - 10.1680/jgele.19.00034

M3 - Article

SN - 2045-2543

VL - 10

SP - 353

EP - 359

JO - Geotechnique Letters

JF - Geotechnique Letters

IS - 2

ER -

On characteristic values for calculating factors of safety for dyke stability

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this