Estimation of pullout resistance of grouted soil nails using Bayesian probabilistic approach
Zhou W.H.; Tan F.; Yuen K.V.
2011-12-01
Conference Name14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
Source Publication14th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering
Conference Date23–27 May 2011
Conference PlaceHong Kong, China
Abstract

The pullout resistance of a soil nail is a key parameter in the soil nailing design. Many factors have influences on the pullout resistance, such as overburden stress, grouting pressure, soil dilation, and degree of saturation of soil. These factors are not well considered in the current design methods. In this study, Bayesian probabilistic approach is employed to build a new predictive formula for estimation of pullout resistance of grouted soil nails. Firstly, the Bayesian model class selection framework is briefly reviewed, and specific expressions are derived for the multivariate linear regression formula. Then, a series of laboratory soil nail pullout test data under different combinations of overburden pressure, degree of saturation and grouting pressure are analyzed by Bayesian method. The analysis shows that grouting pressure and degree of saturation are the most important factors in the estimation of soil nail pullout resistance. It is found that the proposed model is better correlated with experiment results than Hong Kong design method.

URLView the original
Language英语
Fulltext Access
Document TypeConference paper
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
AffiliationUniversidade de Macau
Recommended Citation
GB/T 7714
Zhou W.H.,Tan F.,Yuen K.V.. Estimation of pullout resistance of grouted soil nails using Bayesian probabilistic approach[C],2011.
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