Numerical Analysis of Suction Caissons in Sand Under Cyclic Loading: Transition from Compression to Tension
Numerical Analysis of Suction Caissons in Sand Under Cyclic Loading: Transition from Compression to Tension
The response of suction caisson foundations in sand is influenced by the direction and magnitude of cyclic loading. In a multi-caisson foundation system, transitioning from compressive to tensile cyclic loading influences the load-displacement behaviour and the settlement accumulation. To investigate such a scenario, a numerical analysis has been conducted in this study using the SANISAND-MS constitutive model, which has been calibrated against a set of triaxial tests. A finite element (FE) model of a suction caisson foundation was developed and validated using centrifuge test data reported in the literature. Following the validation, a parametric study was conducted to investigate the effect of varying cyclic stress amplitudes and load transitions on the behaviour of suction caissons. This numerical investigation provides valuable insights on the load-displacement responses and settlement accumulation patterns of suction caisson foundations under cyclic loading, thus contributing to an improved understanding of these foundations in offshore wind applications.
N. Ullah; Anamitra Roy; George Anoyatis; Stijn Francois; Shiao Huey Chow
5th International Symposium on Frontiers in Offshore Geotechnics (ISFOG2025)
11 - Suction installed foundations and anchors
https://doi.org/10.53243/ISFOG2025-360
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