Occurrence of liquefaction in saturated sandy deposits under structure foundation can cause a wide range of structural damages from minor settlement to general failure because of bearing capacity loss. By comparing traditional foundations for offshore wind turbines, the soil inside and underneath the composite bucket foundation is subjected to the overburden pressure from the foundation self-weight and constrained by a half-closed bucket skirt. The objective of this paper is to clarify the effects of the soil-foundation interaction on the soil liquefaction resistance around the skirt and under the foundation. The dynamic response of the composite bucket foundation during earthquake, including coupled soil mode of porous media, is calculated using the ADINA finite-element program. A typical configuration of composite bucket foundation is used for the analysis, and two earthquake waves (peak ground accelerations of 0.035 g and 0.22 g) are applied as the base acceleration. The results show that the composite bucket foundation exhibited good resistance to seismic action by improving the anti-liquefaction capacity of the soil inside and under the foundation because of the overburden pressure of the self-weight and the constraint effect of the skirt.
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September 2014
Research Article|
September 15 2014
Anti-liquefaction characteristics of composite bucket foundations for offshore wind turbines Available to Purchase
Puyang Zhang;
Puyang Zhang
a)
1State Key Laboratory of Hydraulic Engineering Simulation and Safety,
Tianjin University
, Tianjin 300072, China
2
Key Laboratory of Coast Civil Structure Safety (Tianjin University)
, Ministry of Education, Tianjin 300072, China
3School of Civil Engineering,
Tianjin University
, Tianjin 300072, China
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Kangping Xiong;
Kangping Xiong
3School of Civil Engineering,
Tianjin University
, Tianjin 300072, China
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Hongyan Ding;
Hongyan Ding
1State Key Laboratory of Hydraulic Engineering Simulation and Safety,
Tianjin University
, Tianjin 300072, China
2
Key Laboratory of Coast Civil Structure Safety (Tianjin University)
, Ministry of Education, Tianjin 300072, China
3School of Civil Engineering,
Tianjin University
, Tianjin 300072, China
Search for other works by this author on:
Conghuan Le
Conghuan Le
1State Key Laboratory of Hydraulic Engineering Simulation and Safety,
Tianjin University
, Tianjin 300072, China
3School of Civil Engineering,
Tianjin University
, Tianjin 300072, China
Search for other works by this author on:
Puyang Zhang
1,2,3,a)
Kangping Xiong
3
Hongyan Ding
1,2,3
Conghuan Le
1,3
1State Key Laboratory of Hydraulic Engineering Simulation and Safety,
Tianjin University
, Tianjin 300072, China
2
Key Laboratory of Coast Civil Structure Safety (Tianjin University)
, Ministry of Education, Tianjin 300072, China
3School of Civil Engineering,
Tianjin University
, Tianjin 300072, China
a)
Author to whom correspondence should be addressed. Electronic addresses: [email protected] and [email protected]. Tel.: +8613802120158.
J. Renewable Sustainable Energy 6, 053102 (2014)
Article history
Received:
April 22 2014
Accepted:
September 05 2014
Citation
Puyang Zhang, Kangping Xiong, Hongyan Ding, Conghuan Le; Anti-liquefaction characteristics of composite bucket foundations for offshore wind turbines. J. Renewable Sustainable Energy 1 September 2014; 6 (5): 053102. https://doi.org/10.1063/1.4895909
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