Uncertainty Analysis of Axial Pile Capacity in Layered Soils by the Piezocone Penetration Test

This study presented a framework for uncertainty analysis of the ultimate axial bearing capacity piles evaluated by UniCone method in layered soils. The Eslami and Fellenius (1997) is direct piezocone penetration test (CPTU) evaluating reliability design. spatial variability CPTU data modeled as random field each soil unit strata. empirical correlation coefficients are assumed to follow lognormal distributions. On basis uncertainties coefficients, first-order (FORM) then applied piles. effects variations on an Excel spreadsheet-based framework. Seven case studies show that proper identification different units from profiles crucial estimating failure probability pile analysis. Uncertainties would be over-estimated unless identified properly other. geotechnical parameters contribute higher capacity. proposed can evaluate foundations more rationally.