초록

In this paper, dynamic analysis models were constructed for two types of support structures designed to support 3 MW offshore wind turbine towers, and the seismic responses of the wind towers to measured earthquakes and artificial earthquakes were estimated and compared. The two types of support structures compared are the bucket foundation and the jacket foundation, and the ground was considered by soil springs with equivalent stiffness. The mass of the in-member water and the hydrodynamic additional mass for the submerged part were also considered in the analysis model. The two types of support structures that were compared were a ground spring with a bucket foundation and a jacket foundation and the ground with equivalent stiffness. For the analysis, the mass of the adjacent fluid and the hydrodynamic additional mass for the submerged part were considered in the model. As a result, the dynamic model of the wind tower combined with the two types of support structures showed that the dynamic behavior of the superstructure dominates the overall behavior, and the influence of adjacent fluids can be neglected.

키워드

해상풍력발전기, 지지구조물, 내진응답, 버켓기초, 자켓구조물

참고문헌(10)open

  1. [학술지] 이계희 / 2014 / 버켓기초를 가진 해상풍력타워의 지반-구조물 상호작용해석 / 한국재난정보학회 논문집 10 (2) : 244 ~ 252

  2. [학술지] 서윤호 / 2016 / 석션 버켓 지지구조를 포함하는 해상 풍력발전기 고유진동수 추정을 위한 모형화 / 풍력에너지저널 7 (2) : 29 ~ 34

  3. [학술지] 이진학 / 2015 / 지반과 말뚝의 상호작용을 고려한고정식 해상풍력터빈의 동적 특성에 대한 확률적 평가 / 한국전산구조공학회논문집 28 (4) : 343 ~ 350

  4. [학술지] 이기남 / 2015 / 해상풍력발전기 지지구조물의 지진신뢰성해석 / 한국해양공학회지 29 (5) : 342 ~ 350

  5. [학술지] 이진호 / 2017 / 지반-구조물 상호작용을 고려한 콘크리트 석션식 해상풍력 지지구조물의 지진거동 특성 / 한국전산구조공학회논문집 30 (4) : 319 ~ 328

  6. [보고서] KEPCO Research Institute / 2017 / Structural calculation report of pilot offshore wind turbine support structure

  7. [기타] Korea Offshore Wind Power / 2017 / OWT fdn. typical section for 3MW, (unnumbered drawing for review)

  8. [기타] Simulia / 2012 / ABAQUS 6.12 Users Manual

  9. [기타] Ministry of Maritime Affairs and Fisheries / 2014 / Harbor and Marina Design Code : 324

  10. [인터넷자료] Lestuzzi, P. / SimSeisme