세굴에 기인한 해상풍력터빈 펜타팟 석션버켓 지지구조물의 극한한계상태 위험도 평가
Ultimate Limit State Risk Assessment of Penta Pod Suction Bucket Support Structures for Offshore Wind Turbine due to Scour
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
5.5MW 해상풍력터빈을 위해 새로 개발된 펜타팟 석션버켓 지지구조물의 극한한계상태 위험도 평가를 진행하였다. 유의파고, 유의파 주기, 조류속 등 해양 환경조건을 고려한 세굴확률을 위험(hazard)으로 산정하였다. 석션버켓 지지구조물 기초의 극한한계상태 파괴기준을 적용하여 세굴 깊이에 따른 취약도를 산정하였다. 극한한계상태는기초구조물의 지지력을 이용하여 정의하였다. 해저드와 취약도를 이용하여 펜타팟 석션버켓의 위험도를 산정하였다.
Abstract
The scour risk assessment was conducted for ultimate limit state of newly developed penta pod suction bucket support structures for a 5.5 MW offshore wind turbine. The hazard was found by using an empirical formula for scour depth suitable for considering marine environmental conditions such as significant wave height, significant wave period, and current velocity. The scour fragility curve was calculated by using allowable bearing capacity criteria of suction foundation. The scour risk was assessed by combining the scour hazard and the scour fragility.
참고문헌 (13)
- Achmus, M., "Load-bearing behavior of suction bucket foundations in sand", Applied Ocean Research, 43, pp.157~165 (2013)
- "Bladed Multibody dynamics user manual (ver. 4.4)", Garrad Hassan, ~
- Ding, H., "Model tests on the bearing capacity of wide-shallow composite bucket foundations for offshore wind turbines in clay", Ocean Engineering, 103, pp.114~122 (2015)
- 김영진, "세굴을 고려한 해상풍력터빈 지지구조물 위험도 평가", 한국해안·해양공학회논문집, 32(6), pp.524~530 (2020), 한국해안,해양공학회[DOI]
- Report on the Estimation of Deep Sea Designers in All Seas Ⅱ, "Korea Ocean Research & Development Institute", ~ (2005)
- Latini, C., "Dynamic lateral response of suction caissons", Soil Dyn. Earthq. Eng, 100, pp.59~71 (2017)
- Lee, J. H., "Dynamic instability analysis of wind turbines with mono pile foundation considering foundation scour", Korean Society of Civil Engineers Conference, pp.892~896 (2013)
- Morison, J. R., "The force exerted by surface waves on piles", Journal of Petroleum Technology, pp.149~154 (1950)
- Ngo, D. V., "Effects of Scour on Seismic Fragility of an Offshore Wind Turbine on Penta-pod Suction Bucket Foundation", Proceedings of the 8th. Annual Conference of Korean Society of Coastal Disaster Prevention (2020)
- 오명학, "해상풍력발전 버켓기초공법의 경제성 평가", 한국산학기술학회논문지, 13(4), pp.1908~1914 (2012), 한국산학기술학회[DOI]
- Shinozuka, M., "Statistical Analysis of Fragility Curves", Journal of Engineering Mechanics, 126(12), pp.1224~1231 (2000)
- Sumer, B. M., "Scour around pile in combined waves and current", Journal of Hydraulic Engineering, 127(5), pp.403~411 (2001)
- Thieken, K., "On the behavior of suction buckets in sand under tensile loads", Computers and Geotechnics, 60, pp.88~100 (2014)