Centrifuge modeling of lateral bearing behavior of offshore wind turbine with suction bucket foundation in sand
Abstract
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.
- Authors:
-
- Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Civil Engineering
- Publication Date:
- Research Org.:
- Lake Erie Energy Development Organization, Cleveland, OH (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1605664
- Alternate Identifier(s):
- OSTI ID: 1397973
- Grant/Contract Number:
- EE0006714; DE‐EE0006714
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Ocean Engineering
- Additional Journal Information:
- Journal Volume: 139; Journal Issue: C; Journal ID: ISSN 0029-8018
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 17 WIND ENERGY; 42 ENGINEERING
Citation Formats
Wang, Xuefei, Yang, Xu, and Zeng, Xiangwu. Centrifuge modeling of lateral bearing behavior of offshore wind turbine with suction bucket foundation in sand. United States: N. p., 2017.
Web. doi:10.1016/j.oceaneng.2017.04.046.
Wang, Xuefei, Yang, Xu, & Zeng, Xiangwu. Centrifuge modeling of lateral bearing behavior of offshore wind turbine with suction bucket foundation in sand. United States. https://doi.org/10.1016/j.oceaneng.2017.04.046
Wang, Xuefei, Yang, Xu, and Zeng, Xiangwu. Sat .
"Centrifuge modeling of lateral bearing behavior of offshore wind turbine with suction bucket foundation in sand". United States. https://doi.org/10.1016/j.oceaneng.2017.04.046. https://www.osti.gov/servlets/purl/1605664.
@article{osti_1605664,
title = {Centrifuge modeling of lateral bearing behavior of offshore wind turbine with suction bucket foundation in sand},
author = {Wang, Xuefei and Yang, Xu and Zeng, Xiangwu},
abstractNote = {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.},
doi = {10.1016/j.oceaneng.2017.04.046},
journal = {Ocean Engineering},
number = C,
volume = 139,
place = {United States},
year = {Sat May 06 00:00:00 EDT 2017},
month = {Sat May 06 00:00:00 EDT 2017}
}
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Works referencing / citing this record:
Evaluation of Undrained Bearing Capacities of Wide-Shallow Bucket Foundation with Honeycomb Bulkheads in Clay
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Jacking penetration resistance and mechanical characteristics of bucket foundations in sand
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