Journal of the Computational Structural Engineering Institute of Korea (한국전산구조공학회논문집)

Computational Structural Engineering Institute of Korea (한국전산구조공학회)
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Vibration Reduction Evaluation of Jacket Structure by applying Precast Concrete Block and Suction pile

Precast Concrete Block 및 Suction pile을 적용한 Jacket 구조물의 진동저감 효과 평가

  • 이성진 (한국해양대학교 건설공학과) ;
  • 경갑수 (한국해양대학교 건설공학과) ;
  • 류성진 (한국해양대학교 건설공학과) ;
  • 정지영 (씨티씨주식회사) ;
  • 박진은 (한국해양대학교 건설공학과)
  • Received : 2015.06.19
  • Accepted : 2015.07.15
  • Published : 2015.08.28
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Abstract

Recently, construction sites of offshore wind power tend to move from shallow water to deep water. From this tendency, the research on the support structure of offshore wind power in deep water will be a key issue. In this study, precast concrete block and suction pile are applied to existing jacket structure. In order to reduce the vibration of this structure, the tuned liquid damper is also applied in the precast concrete block. The applicability of the suggested jacket structure is evaluated by finite element analysis. And the vibration tends to decrease about 5%, when the tuned liquid damper is applied.

해상풍력발전의 건설이 여러 가지 환경 및 가설공법 등의 설치환경 등의 원인에 의하여 건설지점이 천해에서 심해로 이동하는 경향을 나타내고 있다. 이러한 경향 속에 해상풍력발전 지지구조물의 심해화에 따른 지지구조물에 대한 연구는 중요성이 더욱 증대될 것으로 판단된다. 본 연구에서는 기존의 Jacket 구조물에 대하여 Precast Concrete Block 및 Suction pile을 적용한 Jacket 구조물을 제안하고 이에 대하여 구조해석 및 안전성 평가를 실시하였다. 또한 제안된 구조물에 동조액체감쇠기를 적용하여 구조물 진동성능 향상을 도모하고자 하였다. 연구결과, 제안된 신형식 Jacket 구조물은 충분한 안전성을 가지고 있는 것으로 평가되었으며, 동조액체감쇠기를 적용하였을 경우, 약 5%의 진동저감 효과가 있는 것으로 검토되었다.

Keywords

References

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