An improved semi-analytical method for 3D slope reliability assessments

Divya Varkey; Michael Hicks; Phil Vardon

doi:10.1016/j.compgeo.2018.12.020

An improved semi-analytical method for 3D slope reliability assessments

Divya Varkey, Michael Hicks, Phil Vardon

Geo-engineering

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

13 Citations (Scopus)

86 Downloads (Pure)

Abstract

An improved semi-analytical method for calculating the reliability of 3D slopes with spatially varying shear strength parameters is proposed. The response of an existing semi-analytical method has been compared with that of the computationally more intensive, but more general, random finite element method (RFEM), demonstrating that the simpler method underestimates the failure probability. An alternative relationship for the expected failure length and two correction factors are proposed, which modify the original formulation of the simpler method. The proposed approach gives substantially improved results that compare favourably with those obtained by RFEM, and therefore provides a more accurate simplified solution.

Original language	English
Pages (from-to)	181-190
Number of pages	10
Journal	Computers and Geotechnics
Volume	111
DOIs	https://doi.org/10.1016/j.compgeo.2018.12.020
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

Finite element analysis
Heterogeneity
Random fields
Slope stability
Three dimensional

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10.1016/j.compgeo.2018.12.020

1-s2.0-S0266352X18303380-mainFinal published version, 2.19 MB

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title = "An improved semi-analytical method for 3D slope reliability assessments",

abstract = "An improved semi-analytical method for calculating the reliability of 3D slopes with spatially varying shear strength parameters is proposed. The response of an existing semi-analytical method has been compared with that of the computationally more intensive, but more general, random finite element method (RFEM), demonstrating that the simpler method underestimates the failure probability. An alternative relationship for the expected failure length and two correction factors are proposed, which modify the original formulation of the simpler method. The proposed approach gives substantially improved results that compare favourably with those obtained by RFEM, and therefore provides a more accurate simplified solution.",

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AU - Hicks, Michael

AU - Vardon, Phil

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PY - 2019

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N2 - An improved semi-analytical method for calculating the reliability of 3D slopes with spatially varying shear strength parameters is proposed. The response of an existing semi-analytical method has been compared with that of the computationally more intensive, but more general, random finite element method (RFEM), demonstrating that the simpler method underestimates the failure probability. An alternative relationship for the expected failure length and two correction factors are proposed, which modify the original formulation of the simpler method. The proposed approach gives substantially improved results that compare favourably with those obtained by RFEM, and therefore provides a more accurate simplified solution.

AB - An improved semi-analytical method for calculating the reliability of 3D slopes with spatially varying shear strength parameters is proposed. The response of an existing semi-analytical method has been compared with that of the computationally more intensive, but more general, random finite element method (RFEM), demonstrating that the simpler method underestimates the failure probability. An alternative relationship for the expected failure length and two correction factors are proposed, which modify the original formulation of the simpler method. The proposed approach gives substantially improved results that compare favourably with those obtained by RFEM, and therefore provides a more accurate simplified solution.

KW - Finite element analysis

KW - Heterogeneity

KW - Random fields

KW - Slope stability

KW - Three dimensional

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DO - 10.1016/j.compgeo.2018.12.020

M3 - Article

SN - 0266-352X

VL - 111

SP - 181

EP - 190

JO - Computers and Geotechnics

JF - Computers and Geotechnics

ER -

An improved semi-analytical method for 3D slope reliability assessments

Abstract

Bibliographical note

Keywords

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