Monotonic response of a partially and fully Installed suction caisson
Monotonic response of a partially and fully Installed suction caisson
ABSTRACT: Over the past decade, suction caissons have gained popularity as a foundation for offshore wind turbines due to the speed of installation and because they avoid the potential for harmful acoustic emissions associated with driving of monopiles. After suction assisted penetration, underlid grouting is usually carried out to ensure contact between the caisson lid and the seabed. This underlid grout operation results in additional offshore time and costs. This paper explores the effect of underlid grouting on suction caisson response to drained compressive loading by comparing results from centrifuge model tests on partially (without grout) and fully installed caissons (with grout). The load-displacement of partially and fully installed buckets is shown to be similar at the early stages of loading, indicating that skirt resistance is identical for a partially installed and a fully installed caisson. The results in this paper are the catalyst for a more comprehensive investigation into the behaviour of partially installed caissons to monotonic loading under different drainage conditions.
Astha Sharma; Miguel Angel Cabrera; F. da Silva Pereira; Weiyuan Zhang; Conleth O'loughlin; Kenneth G. Gavin
5th European Conference on Physical Modelling in Geotechnics (ECPMG2024)
Onshore and offshore foundation systems
https://doi.org/10.53243/ECPMG2024-25
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