Centrifuge modelling of spudcan–pile interaction in soft clay overlying sand

Abstract

When a jack-up rig is installed in close proximity to an existing piled jacket platform, the massive soil movements induced by spudcan penetration may damage the adjacent piles. In 2012 the authors reported the findings of an extensive centrifuge model study on spudcan-pile interaction in soft clay. As a seabed profile may consist of soft clay over stiff soils and the spudcan-pile interaction phenomenon in such case is expected to be significantly different from that in soft clay, the earlier study is extended to investigate the interaction of a spudcan with adjacent piles in a soft clay overlying sand profile. Besides centrifuge tests on model spudcans, tests on half-spudcans placed behind the transparent window of the model container have been conducted to evaluate the soil movements and failure mechanism for various model configurations and soil conditions. The experimental results and findings are presented in this paper.

The Deformation Characteristics of Weak Foundation with High Back Siltation in the Immersed Tunnel

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Penetration Behavior of Jack-up Leg with Spudcan for Offshore Wind Turbine to Multi-layered Soils Using Centrifuge Tests

“…Therefore, it is also efficient to reduce its levelized cost of energy (LCOE). However, the behavior of this new jack-up substructure are not well analyzed, so it is necessary to analyze the installation behavior by taking the soil properties into account to ensure stable support depending on the soil conditions (Teh et al, 2008;Lee, 2009;Cassidy, 2012;Kim et al, 2014;Jin et al, 2015;Yoo et al, 2016;Yoo et al, 2017;Xie et al, 2017;Choi, 2020;Falcon et al, 2021a;Falcon et al, 2021b).…”