Scientific and rational determination of the representative values of geotechnical parameters constitutes a premise for the design of a safe and economic project.In this paper,an approach based on a Bootstrap resampling technique is proposed to determine the standard values of geotechnical parameters that have a confidence probability of 95% over the Bootstrap sample mean.First,the Bootstrap method is briefly introduced and a set of shear strength parameters is utilized to elaborate the procedures.Two examples were analyzed to assess the influence of the number of Bootstrap simulations(i.e.,the size of bootstrap samples) and the variability of original data on the convergence and accuracy of standard values.It was shown that the standard values determined using the proposed Bootstrap method have good convergence and accuracy.When the number of Bootstrap simulations was at least 100,the number of bootstrap simulations and the variability of original data had a negligible impact on the convergence and accuracy of standard values.Therefore,this method is capable of assessing the uncertainty in geotechnical parameters.
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王晓明,曹正波.基于Bootstrap方法确定岩土参数的标准值[J].地震工程学报,2015,37(S1):7-11. WANG Xiao-ming, CAO Zheng-bo. Determination of the Standard Value of Geotechnical Parameters Using a Bootstrap Method[J]. China Earthquake Engineering Journal,2015,37(S1):7-11.