Abstract
The need of the refinement of the design methodology for belled pile has come to be acknowledged in association with the increase in natural disasters and the liberalization of electric power industry in recent years. Despite the recent development of the computational method for geotechnical problems, it is problematic to find the effective numerical tools readily applicable to the uplift problems of belled pile. We conduct several numerical analyses of the uplift problems to assess the practical applicability of the numerical approach to such problems. Nonlinear elasto-plastic finite element method is utilized to capture the progressive and localized failure in foundation, and the performance of this approach is illustrated through the comparison of the analysis results with the conventional engineering approach based on the so-called logarithmic spiral equation and with centrifugal model experiments.
