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Title: Centrifuge modeling of lateral bearing behavior of offshore wind turbine with suction bucket foundation in sand

Journal Article · · Ocean Engineering
 [1];  [1];  [1]
  1. Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Civil Engineering

Suction bucket foundation is a promising alternative for offshore wind turbine foundations. The lateral bearing behavior and failure mechanism are significant topics for optimizing its design criteria. In this study, a group of centrifuge tests were performed to investigate the lateral bearing capacity of suction bucket foundation with three aspect ratios. Force-controlled lateral static and cyclic tests were performed at a centrifuge acceleration of 50g. Four soil conditions were considered in centrifuge tests with a combination of loose/dense and dry/saturated sand. The load-displacement and the stiffness-displacement relationships are presented in the paper, and it is concluded that the lateral bearing capacity can be reached when the normalized lateral displacement (displacement divided by the bucket diameter) reached 3% as the first method. Displacement rates are plotted against the lateral load to give the second method for defining the ultimate lateral capacity. In cyclic tests, the lateral displacement and stiffness are correlated to the cycle numbers in the first 5 cycles, but the change is less apparent in the rest. The results demonstrated the behavior of bucket foundation in service conditions. Finally, a simplified calculation method is used as the third method and checked with tests results.

Research Organization:
Lake Erie Energy Development Organization, Cleveland, OH (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Grant/Contract Number:
EE0006714; DE‐EE0006714
OSTI ID:
1605664
Alternate ID(s):
OSTI ID: 1397973
Journal Information:
Ocean Engineering, Vol. 139, Issue C; ISSN 0029-8018
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

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Cited By (2)

Evaluation of Undrained Bearing Capacities of Wide-Shallow Bucket Foundation with Honeycomb Bulkheads in Clay journal December 2019
Jacking penetration resistance and mechanical characteristics of bucket foundations in sand journal June 2019

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