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Centrifuge test of a clustered bucket foundation for offshore wind towers
| Content Provider | Semantic Scholar |
|---|---|
| Author | Choo, Yun Wook Kim, Seunghye Kim, Jung Ho Lee, Hyoung Yool Kim, Dongwon Kim, Dong Jin Youn, Jun-Ung Jee, Sung-Hyun Choi, Junhwan Hossain, Muhammad Tanvir |
| Copyright Year | 2014 |
| Abstract | This paper reports the results from a series of centrifuge model tests undertaken to provide insight into the behaviour of a clustered suction bucket foundation. Of particular interest was to compare the performance with that of a monopod foundation. The clustered foundation consisted of three buckets, spacing at 1.5 diameters centre to centre, and was fabricated based on the area equivalent principle i.e. the total plan area of the three buckets was approximately equal to the area of the corresponding monopod foundation. Horizontal load, combined with overturning moment load, was applied to simulate a loading condition that offshore wind towers typically withstand. The resisting performances of the clustered and monopod bucket foundations were evaluated and compared. The use of the clustered bucket foundation improved the resistance as much as 58%, with the efficiency decreasing with increasing rotation angle. et al., 2005; Gourvenec, 2007; LeBlanc et al., 2009; Zhu et al., 2011; Hung and Kim, 2012). Various factors such as water depth, soil conditions, fabrication facilities, installation equipment, and transport vessels should be taken into account in order to conceive a suitable foundation type. At some sites, bucket foundations may prove more economical. By comparison with traditional foundation systems, such as piles or massive concrete bases, large savings can be made on installation time and materials. The foundation may be monopod or tripod/ quadruped (i.e. may consist of 1∼4 individual buckets; Houslby and Byrne, 2000; Byrne and Houslby, 2003). For the former, the overturning load is applied directly to the single large foundation. In this case the bucket may be embedded solely in the sand and the foundation response to an overturning moment will be critical. For the latter, the overturning loads applied by the wind and waves are resisted predominantly by a ‘push-pull’ action, involving equal and opposite vertical loads at foundation level. In this design, the foundations are likely to be embedded in sand, and it will be the response of the foundation to vertical loads that is critical (Byrne and Houslby, 2003). This |
| Starting Page | 529 |
| Ending Page | 535 |
| Page Count | 7 |
| File Format | PDF HTM / HTML |
| DOI | 10.1201/b16200-72 |
| Alternate Webpage(s) | http://koasas.kaist.ac.kr/bitstream/10203/255689/1/2140.pdf |
| Alternate Webpage(s) | https://doi.org/10.1201/b16200-72 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
