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Model updating and uncertainty analysis for creep behavior of soft soil
Zhou, Wan-Huan; Tan, Fang; Yuen, Ka-Veng
2018-08
Source PublicationCOMPUTERS AND GEOTECHNICS
ISSN0266-352X
Volume100Pages:135-143
AbstractOf late, various constitutive models have been proposed in the literature for the purpose of capturing the various complex physical mechanisms governing the creep behavior of soft soil. However, the more complex the model, the greater the number of associated uncertain parameters it has, and the less robustness it is. In this study, the Bayesian model class selection approach is applied to select the most plausible/suitable model describing the creep behavior of soft soil using laboratory measurements. In total, one elastic plastic (EP) model and eight elastic viscoplastic (EVP) models are investigated. To assess the performance of the different models in the prediction of creep behavior of soft soils, Bayesian model class selection is respectively performed using the oedometer test data from the intact samples of Vanttila clay and reconstituted samples of Hong Kong Marine Clay collected from the literature. All unknown model parameters are identified simultaneously by adopting the transitional Markov Chain Monte Carlo (TMCMC) method, and their uncertainty is quantified through the obtained posterior probability density functions (PDFs). The result shows that the proposed method is an excellent candidate for identifying the most plausible model and its associated parameters for different kinds of soft soils. The approach also provides uncertainty evaluation of the model prediction based on the given data.
KeywordBayesian model class selection Creep Elastic viscoplastic models TMCMC method Uncertainty evaluation
DOI10.1016/j.compgeo.2018.04.006
URLView the original
Indexed BySCI
Language英语
WOS Research AreaComputer Science ; Engineering ; Geology
WOS SubjectComputer Science, Interdisciplinary Applications ; Engineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000435750200011
PublisherELSEVIER SCI LTD
The Source to ArticleWOS
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被引频次[WOS]:9   [WOS记录]     [WOS相关记录]
Document TypeJournal article
专题University of Macau
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Zhou, Wan-Huan,Tan, Fang,Yuen, Ka-Veng. Model updating and uncertainty analysis for creep behavior of soft soil[J]. COMPUTERS AND GEOTECHNICS,2018,100:135-143.
APA Zhou, Wan-Huan,Tan, Fang,&Yuen, Ka-Veng.(2018).Model updating and uncertainty analysis for creep behavior of soft soil.COMPUTERS AND GEOTECHNICS,100,135-143.
MLA Zhou, Wan-Huan,et al."Model updating and uncertainty analysis for creep behavior of soft soil".COMPUTERS AND GEOTECHNICS 100(2018):135-143.
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