보조 지지구조물이 적용된 해상풍력 모노파일의 구조거동 분석
Structural Behavior Analysis of Offshore Wind Monopile with Supplementary Support
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초록
This study investigated the existing supplementary supports for offshore monopiles and proposed a multi-bucket type of supplementary support. Some numerical analyses were conducted to examine changes in behaviors of offshore monopiles due to the multi-bucket support; to ompare the behaviors, the same monopile without the supplementary support was also analyzed. In the analyses, a monopile was installed with a supplementary support with three buckets at two Korean offshore wind farm candidate sites with different soil conditions. The results showed that the supplementary support was able to reduce lateral and flexural deformations of the monopile dramatically when the structures were installed where the soil had sufficient vertical bearing capacities. A different resistance mechanism showed that unlike a monopile only, the axial force of a supplementary support became a governing resistance factor instead of the flexural esistance of a monopile. Also, the supplementary support effect decreased as the monopile penetration depth decreased.
Abstract
This study investigated the existing supplementary supports for offshore monopiles and proposed a multi-bucket type of supplementary support. Some numerical analyses were conducted to examine changes in behaviors of offshore monopiles due to the multi-bucket support; to ompare the behaviors, the same monopile without the supplementary support was also analyzed. In the analyses, a monopile was installed with a supplementary support with three buckets at two Korean offshore wind farm candidate sites with different soil conditions. The results showed that the supplementary support was able to reduce lateral and flexural deformations of the monopile dramatically when the structures were installed where the soil had sufficient vertical bearing capacities. A different resistance mechanism showed that unlike a monopile only, the axial force of a supplementary support became a governing resistance factor instead of the flexural esistance of a monopile. Also, the supplementary support effect decreased as the monopile penetration depth decreased.
참고문헌 (26)
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