[1] Zhang Puyang, , Ding Hongyan, et al. Towing characteristics of large-scale composite bucket foundationfor offshore wind turbines [J]. Journal of Southeast University (English Edition), 2013, 29 (3): 300-304. [doi:10.3969/j.issn.1003-7985.2013.03.013]

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Towing characteristics of large-scale composite bucket foundationfor offshore wind turbines()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

29

Issue:

2013 3

Page:

300-304

Research Field:

Electrical Engineering

Publishing date:

2013-09-20

Info

Title:

Towing characteristics of large-scale composite bucket foundationfor offshore wind turbines

Author(s):

Zhang Puyang¹;  2;  3;  Ding Hongyan¹;  2;  3;  Le Conghuan¹;  Huang Xu³

¹State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
²Key Laboratory of Coast Civil Structure Safety of Ministry of Education, Tianjin University, Tianjin 300072, China
³School of Civil Engineering, Tianjin University, Tianjin 300072, China

Keywords:

large-scale composite bucket foundation;  towing;  MOSES;  offshore wind turbines

PACS:

P751

DOI:

10.3969/j.issn.1003-7985.2013.03.013

Abstract:

In order to study the towing dynamic properties of the large-scale composite bucket foundation, the hydrodynamic software MOSES is used to simulate the dynamic motion of the foundation towed to the construction site. The MOSES model with the prototype size is established as the water draft of 5 and 6 m under the environmental conditions on site. The related factors such as towing force, displacement, towing accelerations in six degrees of freedom of the bucket foundation and air pressures inside the bucket are analyzed in detail. In addition, the towing point and wave conditions are set as the critical factors to simulate the limit conditions of the stable dynamic characteristics. The results show that the large-scale composite bucket foundation with reasonable subdivisions inside the bucket has the satisfying floating stability. During the towing process, the air pressures inside the bucket obviously change little and it is found that the towing point at the waterline is the most optimal choice. The characteristics of the foundation with the self-floating towing technique are competitive for saving lots of cost with few of the expensive types of equipment required during the towing transportation.

References:

[1] Ding Hongyan, Lian Jijian, Li Aidong, et al. One-step-installation of offshore wind turbine on large-scale bucket-top-bearing bucket foundation[J]. Transactions of Tianjin University, 2013, 19(3): 188-194.
[2] Lian Jijian, Ding Hongyan, Liu Run, et al. Research report on key technology of the CBF-3-150 composite bucket foundation for offshore wind turbines[R]. Tianjin: Tianjin University, 2010.(in Chinese)
[3] Lian Jijian, Sun Liqiang, Zhang Jinfeng, et al. Bearing capacity and technical advantages of composite bucket foundation of offshore wind turbines [J]. Transactions of Tianjin University, 2011, 17(2): 132-137.
[4] Ding Hongyan, Li Zengzhi, Lian Jijian, et al. Soil reinforcement experiment inside large-scale bucket foundation in muddy soil [J]. Transactions of Tianjin University, 2012, 18(3): 168-172.
[5] Zhang Puyang, Ding Hongyan, Le Conghuan. Test on the dynamic response of the offshore wind turbine structure with the large-scale bucket foundation [J]. Procedia Environmental Sciences, 2012, 12(Part B):856-863.
[6] Lian Jijian, Ding Hongyan, Zhang Puyang, et al. Design of large-scale prestressing bucket foundation for offshore wind turbines [J]. Transactions of Tianjin University, 2012, 18(2): 79-84.
[7] Ding Hongyan, Zhang Puyang, Le Conghuan. Construction and installation technique of large-scale top-bearing bucket foundation for offshore wind turbine[C]//Proceedings of the 2nd International Conference on Mechanic Automation and Control Engineering. Hohhot, Inner Mongolia, China, 2011: 7234-7237.
[8] Ultramarine Inc. Reference manual for MOSES [S]. Houston, TX, USA: Ultramarim Inc, 2009.
[9] Bie Shean, Ji Chunning, Ren Zengjin, et al. Study on floating properties and stability of air floated structures[J]. China Ocean Engineering, 2002, 16(2):263-272.
[10] Bie Shean, Xu Yanjie, Wang Guanglun. Study on floating state and kinetic properties of the air floated structures[J]. Journal of Tsinghua University: Science and Technology, 2001, 41(11): 123-126.(in Chinese)
[11] Bie Shean, Zhao Chongjiu, Ji Chunning, et al. Stability analysis of the bucket foundation platform transported by air floating[J]. Journal of Tianjin University, 2002, 35(2):222-226.(in Chinese)

Memo

Memo:

Biography: Zhang Puyang(1978—), male, doctor, lecturer, zpy_td@163.com.
Foundation items: The National Natural Science Foundation of China(No.51109160), the National High Technology Research and Development Program of China(863 Program)(No.2012AA051705), the International S&T Cooperation Program of China(No.2012DFA70490), the Natural Science Foundation of Tianjin(No.13JCQNJC06900, 13JCYBJC19100).
Citation: Zhang Puyang, Ding Hongyan, Le Conghuan, et al. Towing characteristics of large-scale composite bucket foundation for offshore wind turbines[J].Journal of Southeast University(English Edition), 2013, 29(3):300-304.[doi:10.3969/j.issn.1003-7985.2013.03.013]

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