Seismic Analysis of Concrete Conical Foundation for 5 MWWind Turbine

Abstract:

Recently offshore wind turbines have been constructed and planned in Korea. However, seismic stability was not extensively examined, although relatively small earthquakes frequently occur and the occurrence trend is increasing. This study intends to analyze the seismic stability of a wind turbine foundation based on KPMDC, KBDC, and DNV OS. The foundation considered has a conical concrete base under a steel shaft supporting the 5 MW wind turbine. This study performed 3D response spectrum analysis to consider turbine weight and self-weights. Analysis resultsbased on KPMDC indicatedthat very severetensile stresses in the concrete foundation near the neck bracket and pile-concrete foundation connection, which may require reinforcing.

• Periodical: Advanced Materials Research (Volume 831)
• Pages: 133-136
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.831.133
• Online since: December 2013
• Authors: Woo Seok Kim, Chan Jeoung, Kang Min Lee*, Jae Ha Lee
• Keywords: Response Spectrum, Seismic Event, Wind Turbine (WT)

References

[1] Korea Ports & Harbours Association: Korea Port and Marina Design Code (KPMDC) (Ministry of Oceans and Fisheries, South Korea 2005).

[2] Korea Road & Transportation Association: Korea Bridge Design Code (KBDC)(Ministry of Land, Transport and Maritime Affairs, South Korea 2012).

[3] BOERE: Comparison of API, ISO, and NORSOK Offshore Structural Standards (DNV, 2012).

[4] Midas Information Technology Co.: Midas/Civil 2012 Analysis Reference(Midas Information Technology Co., South Korea, 2012).