用静力触探成果估算夯扩桩竖向承载力的概率方法

Probabilistic method of evaluating vertical bearing capacity of compacted expanded base pile from static cone penetration

根据静力触探机理和桩的工作性状，应用数理统计方法和土层概率模型，提出了对静力触探成果进行统计分析的随机场方法，并在此基础上估算夯扩桩单桩极限承载力．通过与实测值比较和桩基可靠指标β的计算，表明了本估算方法的可行性和实用性．

According to the mechanism of static cone penetration and the work properties of single-pile foundation,the spatial average and deviation of specific penetration resistance ps are calculated by means of mathematical statistics and random field theory. On the basis of this, the ultimate vertical bearing capacity of pile is evaluated. Through comparison between the evaluated values and measured results,the availability of the vealuated method is verified.