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Reliability analysis of soil-water characteristics curve and its application to slope stability analysis
C.F. Chiu1; W.M. Yan2; Ka-Veng Yuen3
2012-03-21
Source PublicationEngineering Geology
ISSN0013-7952
Volume135-136Pages:83-91
Abstract

Soil-water characteristic curve (SWCC) is a crucial input for modeling the geotechnical problems with unsaturated soil. The accuracy of modeling relies on the assessment of the model parameter uncertainty. In this paper a Bayesian framework is presented to evaluate the updated probability density function (PDF) of the uncertain model parameters for SWCC. The Bayesian analysis is applied to derive the PDF of the model parameters in various forms of van Genuchten equation using the observed data of sand, sandy loam and silty loam. The analysis demonstrates that a 2-parameter model is sufficient for curve-fitting of the SWCC and the two model parameters are approximately statistically independent. Furthermore, the model parameters are influenced by the soil texture. Finally, an engineering example of the probabilistic slope stability analysis is used to illustrate the application of the reliability of SWCC. 

KeywordBayesian Analysis Unsaturated Soils Probability Density Functions Slope Stability
DOI10.1016/j.enggeo.2012.03.004
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000304289900009
PublisherELSEVIER, RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS
The Source to ArticleScopus
Fulltext Access
Citation statistics
Cited Times [WOS]:79   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Faculty of Science and Technology
Corresponding AuthorC.F. Chiu
Affiliation1.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Xikang Road, Nanjing 210098, China
2.Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China
3.Department of Civil and Environmental Engineering, University of Macau, Macau, China
Recommended Citation
GB/T 7714
C.F. Chiu,W.M. Yan,Ka-Veng Yuen. Reliability analysis of soil-water characteristics curve and its application to slope stability analysis[J]. Engineering Geology,2012,135-136:83-91.
APA C.F. Chiu,W.M. Yan,&Ka-Veng Yuen.(2012).Reliability analysis of soil-water characteristics curve and its application to slope stability analysis.Engineering Geology,135-136,83-91.
MLA C.F. Chiu,et al."Reliability analysis of soil-water characteristics curve and its application to slope stability analysis".Engineering Geology 135-136(2012):83-91.
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