Study on Seismic Dynamic Response of Offshore Wind Turbine Tower with Monopile Foundation Based on M Method

Abstract:

Making sure the safety of wind turbine tower structure in service is particularly important with the development of offshore wind turbine facility. In order to make mechanical characteristics of structure explicit, dynamic responses of structure under three different types of seismic waves were analyzed by m method and considering monopile-soil-structure interaction, then comparison with the situation when structure was consolidated in the bottom was made. The result shows, dynamic response was most obvious under the action of far-field seismic wave in such high-rise structure as wind turbine tower. When the acceleration peak of far-field seismic wave was in the level of 8-degree rare earthquake, structure would be unsafe with an oversize displacement at the top of tower. Compared with structure consolidated in the bottom, dynamic response of structure was effected by the intensity and stiffness of soil around the pile. The interaction of soil and foundation was needed to be considered in the analysis of dynamic response.

• Periodical: Advanced Materials Research (Volume 663)
• Pages: 686-691
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.663.686
• Online since: February 2013
• Authors: Bo Song, Yu Yi, Jin Cheng Wu
• Keywords: Interaction, M Method, Monopile Foundation, Offshore Wind Turbine Tower, Seismic Action

References

[1] Takashi Tanabe, Yasuhiko Lida and Hiroshi Masuda, in: A Fundamental Study on Dynamic Characteristics and Seismic Design of Wind Turbine Generator Systems, volume 6 of NKK technical report, 64-69 (2002).

[2] Chen Yan, Cai Anmin, Ye Zhiquan, in: Primary Calculation and Analysis of the Offshore Wind Turbine under the Action of Extreme Wave, volume 29 of Acta Energiae Solaris Sinica, 180-187 (2008).

[3] Takeshi Ishihara, in: The State-of-the-Arton Design of Wind Turbine Support Structures, Civil construction materials proceedings (2008).

[4] Lin Yonggang, Li Wei, Cui baoling, in: Research on the Load of Offshore Wind Turbine's Tower and Foundation, volume 30 of Acta Energiae Solaris Sinica, 962-965 (2009).

[5] I. Lavassas, G. Nikolaidis, P. Zervas, in: Analysis and design of the prototype of a steel 1-MW wind turbine tower, Engineering Structures (2003).

DOI: 10.1016/s0141-0296(03)00059-2

[6] Liu Haiqing, Du Yan, Yu Chunyan, in: Considering soil-structure interaction tapered pipe wind power tower earthquake response analysis, 40 of Building Structure, 116-118 (2010).

[7] He Guangling, in: Seismic response analysis of wind turbine tower systems considering soil-structure interaction, volume 45 of Journal of Mechanical Engineering, 87-94 (2009).

DOI: 10.3901/jme.2009.07.087

[8] Pang Wenyan, in: Research and Analysis of Capability of Structure of Offshore Wind Turbine, Harbin Engineering University (2010).

[9] Xun Caiyun, in: Design and research of pile-style foundation structures for offshore wind turbine, Dalian University of Technology (2009).

[10] The people's Republic of China National Standard, in: Code for design of high-rising structures, China Planning Press, Beijing (2007), in press.