조밀한 모래지반에 설치된 해상풍력 석션기초의 스커트길이에 따른 지진하중시 거동특성

국문 초록 (Abstract)

본 연구는 해상풍력지지구조물로 적용되는 석션기초의 지진하중에 대한 동적거동 분석을 목적으로 하였다. 이를 위하여 동적원심모형실험을 수행하였다. 석션기초의 스커트길이는 외력에 대한 지지거동에 중요한 역할을 한다. 스커트길이/석션기초외경 비가 0.5, 0.75, 1의 3가지 석션기초 모형이 조밀한 모래지반에 설치된 경우에 대하여 동적원심모형실험 결과를 제시하였다. 실험결과로 스커트길이에 따른 석션기초에서의 가속도증폭특성, 잔류침하량, 잔류회전각을 비교하였다.

다국어 초록 (Multilingual Abstract)

This study aims to analyze seismic responses of suction foundations for offshore wind turbine. For this purpose, dynamic centrifuge model tests were carried out. The skirt length of the suction foundation is a critical element for bearing mechanism against environmental loads. Thus, dynamic centrifuge model tests were performed and analyzed for three suction foundation models with the ratios of skirt length to suction foundation diameter of 0.5, 0.75, and 1 installed in dense sand. As results, the acceleration amplification at the suction foundation, residual settlement, and residual tilting angle were compared.

목차 (Table of Contents)

• 요지
• Abstract
• 1. 서론
• 2. 실험
• 3. 실험결과 및 토의
• 4. 결론
• References

참고문헌 (Reference)

1 Fischer, T, "Upwind design basis (WP4: Offshore Foundations and Support Structures). 4-10-PU-0204"

2 Wang, Y, "The response of bucket foundation under horizontal dynamic loading" 33 : 964-973, 2006

3 Zhang, P, "Test on the dynamic response of the offshore wind trubine structure with the largescale bucket foundation" 12 : 856-863, 2011

4 Tjelta, T.I, "Suction piles: there position and application today" 2001

5 Sparrevik, P, "Suction pile technology and installation in deep waters" 2002

6 Houlsby, G.T, "Suction caissons for wind turbines" 75-93, 2005

7 Kourkoulis, R.S, "Suction caisson foundations for offshore wind turbines subjected to wave and earthquake loading: effect of soil-foundation interface" 64 (64): 171-185, 2014

8 Houlsby, G.T, "Suction caisson foundations for offshore wind turbines and anemometer masts" 24 (24): 249-255, 2000

9 Anderson, K.H, "Suction anchors for deepwater applications" 3-30, 2005

10 Olalo Leonardo T., "Seismic Response of Bucket Foundations for Offshore Wind Tower" 한국방재학회 15 (15): 179-189, 2015

11 LeBlanc, C, "Response of stiff piles in sand to long term cyclic loading" 60 (60): 79-90, 2010

12 Lee, S.H, "Performance of an equivalent shear beam (ESB) model container for dynamic geotechnical centrifuge tests" 44 (44): 102-114, 2013

13 Doherty, P, "Laterally loaded monopile design for offshore wind farms" 165 (165): 7-17, 2012

14 Kim, D.J, "Investigation of monotonic and cyclic behavior of tripod suction bucket foundations for offshore wind towers using centrifuge modeling" ASCE 140 (140): 04014008-, 2014

15 Zhu, B, "Installation and lateral loading tests of suction caissons in silt" 48 (48): 1070-1084, 2011

16 B. W. Byrne, "Foundations for offshore wind turbines" The Royal Society 361 (361): 2909-2930, 2003

17 Kwag, D, "Field installation tests of monopod suction pile and tripod suction buckets" OMAE 2013

18 Hung, L.C, "Evaluation of undrained bearing capacities of bucket foundations under combined loads" 32 : 76-92, 2014

19 Segismundo Ezequiel Q, "Evaluation of Shear Modulus of Sand Using Earthquake Records in Dynamic Centrifuge Tests" 한국방재학회 14 (14): 133-141, 2014

20 Chopra, A.K, "Dynamics of Structures: Theory and Applications to Earthquake Engineering" Prentice Hall 2000

21 Choo, Y. W, "Dynamic centrifuge model tests of bucket foundations for offshore wind tower. Proc. of EESK Conference, Daejeon" 2014

22 Shin, Y, "Design of composite pile foundations for offshore wind turbines" 2014

23 Zeng, X, "Design and performance of an equivalent-shear-beam container for earthquake centrifuge modeling" 46 : 83-102, 1996

24 Taylor, R.N, "Centrifuges in modeling: principles and scale effect" 19-33, 1995

25 Choo, Y. W, "Centrifuge tests of monopod and tripod bucket foundations for offshore wind turbine tower" 2012

26 Wang, X, "Centrifuge modeling of offshore wind turbine with bucket foundation under earthquake loading" 1741-1750, 2015

27 Schofield, A.N, "Cambridge geotechnical centrifuge operations" 30 (30): 227-268, 1980

28 Randolph, M.F, "Analysis of suction caisson capacity in clay" 2002

29 Kim, N.R, "An 800 g-tonne geotechnical centrifuge at K-water Institute" 2014