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Application of Bayesian theory in ground settlement of red clay(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2009年04期
Page:
30-33
Research Field:
Publishing date:
2009-08-20

Info

Title:
Application of Bayesian theory in ground settlement of red clay
Author(s):
LI Zhen-yu1; LI Hai-yang2; WANG Yong-he1; YANG Guo-lin1
1.School of Civil Engineering and Architecture,Central South University,Changsha 410075,Hunan,China;2.Department of Communications,Qinghai Province Government,Xining 810008,Qinghai,China
Keywords:
geotechnical engineering;  Bayesian theory;  settlement modification coefficients;  prior knowledge;  posterior distribution;  uniform distribution;  Gaussian distribution
PACS:
TU433
DOI:
-
Abstract:
The probability distributions of samples measured are obtained through histogram analysis and hypothesis testing. The posterior distribution coefficients can be gotten based on the Bayesian approach and combined with priori distributions of the settlement modification coefficients. The analysis results show that when the prior distributions are the noninformation, the posterior distributions of coefficients are greatly influenced by samples information. When the distributions of samples are approved to obey Gaussian distributions, the posterior distributions of coefficients also obey these distributions, whose parameters are μ and σ, the values of μ are decreased with external loads increasing, and the values of σ have no significant change law. Through the optimization by Bayesian methods, the range of settlement modification coefficients is narrowed, which the influence of external loads are taken into account. 3 tabs, 4 figs, 10 refs.

References:

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Last Update: 2009-08-20