Foundation structure

Details Foundation structure Foundation structure

2011-02-22

2011-02-22

Lagman, Frederick L (Department: 3672)

Hydraulic and earth engineering

Marine structure or fabrication thereof

With anchoring of structure to marine floor

C405S226000

Reexamination Certificate

active

07891910

ABSTRACT:
Method of installing a bucket foundation structure comprising one, two, three or more skirts, into soils in a controlled manner. The method comprises two stages: a first stage being a design phase and the second stage being an installation phase. In the first stage, design parameters are determined relating to the loads on the finished foundation structure; soil profile on the location of installation; allowable installation tolerances, which parameters are used to estimate the minimum diameter and length of the skirts of the bucket. The bucket size is used to simulate load situations and penetration into foundation soil, in order to predict necessary penetration force, required suction inside the bucket and critical suction pressures, which penetration force, required suction, and critical suction pressures are used as input for a control system in the second stage, in which second stage the pa-rameters determined in the first stage are used in order to control the installation of the bucket.

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Houlsby et al.; “Suction caissons for wind turbines”; Frontiers in Offshore Geotechnics—Gourvenec & Cassidy (eds); 2005 Taylor & Francis Group, London; ISBN 0 415 39063X; pp. 75-93.

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