Back-calculations of Centrifuge Tests on Pile Groups Subjected to High-cyclic LoadingÂ-Video

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The study evaluates numerical methods for predicting pile foundations under lateral cyclic loading, an area with limited design guidance. Researchers back-calculated centrifuge tests using a finite-element model that combines a conventional constitutive model for initial loading with a high-cycle accumulation model for subsequent cycles. Simulations reproduced monotonic single-pile behavior and cyclic pile-group displacements reasonably well. For a cyclic single pile, however, the model overpredicted accumulated displacement at higher cycle counts. The authors attribute this to load-induced strains beyond the accumulation model’s validated range and suggest recalibrating its parameters for higher strain amplitudes in future work.

Keywords

pile foundations

lateral cyclic loading

finite-element model

cyclic accumulation model

centrifuge tests