On characteristic values and the reliability-based assessment of dykes

Michael A. Hicks; Divya Varkey; Abraham P. van den Eijnden; Tom de Gast; Philip J. Vardon

doi:10.1080/17499518.2019.1652918

On characteristic values and the reliability-based assessment of dykes

Michael A. Hicks^*, Divya Varkey, Abraham P. van den Eijnden, Tom de Gast, Philip J. Vardon

^*Corresponding author for this work

Geo-engineering

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

29 Citations (Scopus)

198 Downloads (Pure)

Abstract

A case study involving the assessment and re-design of an existing dyke, founded on a layered soil, has compared deterministic analysis based on 5-percentile property values and a reliability-based random finite element analysis consistent with the requirements of Eurocode 7. The results show that a consideration of the spatial nature of soil variability generally leads to higher computed factors of safety and, for those dyke sections requiring remedial action, to more economic designs. Back-figured characteristic values are shown to be considerably higher than the 5-percentile soil properties; hence, a reduction in over-conservatism is achieved.

Original language	English
Pages (from-to)	313-319
Number of pages	7
Journal	Georisk
Volume	13
Issue number	4
DOIs	https://doi.org/10.1080/17499518.2019.1652918
Publication status	Published - 2019

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

Characteristic values
dykes
Eurocode 7
slope reliability
spatial variability

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title = "On characteristic values and the reliability-based assessment of dykes",

abstract = "A case study involving the assessment and re-design of an existing dyke, founded on a layered soil, has compared deterministic analysis based on 5-percentile property values and a reliability-based random finite element analysis consistent with the requirements of Eurocode 7. The results show that a consideration of the spatial nature of soil variability generally leads to higher computed factors of safety and, for those dyke sections requiring remedial action, to more economic designs. Back-figured characteristic values are shown to be considerably higher than the 5-percentile soil properties; hence, a reduction in over-conservatism is achieved.",

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AU - de Gast, Tom

AU - Vardon, Philip 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.

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On characteristic values and the reliability-based assessment of dykes

Abstract

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