摘要
结合工程实例,介绍了推广贝叶斯(Bayes)法在岩土参数估计中的具体应用.该方法利用场地周围其他工程的数据拟合出各参数的最优分布函数,并以此为先验分布,用推广贝叶斯法对现有样本进行处理,得出后验分布参数以进行基础设计.实际观测结果表明,根据后验分布参数计算的基础沉降值与实际值吻合较好,证明了提出的岩土参数估计方法的可行性与可靠性.
The application of the extended Bayesian method in the field of estimation of the geotechnical parameters is introduced in an engineering case study. The data around the site is analyzed to fit out the optimum distribution-function of each parameter. The optimum distribution- function is used as a prior distribution to deal with present samples. The predicted deformation of the foundation based on the extended Bayesian method show a good agreement with the observed value. The feasibility and reliability of the proposed method in estimating the geotechnical parameters is shown.
出处
《汕头大学学报（自然科学版）》
2008年第1期70-76,共7页
Journal of Shantou University：Natural Science Edition
关键词
推广贝叶斯法
参数估计
基础设计
可靠性
extended Bayesian method
parameter estimation
foundation design
reliability
