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題名 | Experimental Study on Scour and Protection around the Jacket Type Offshore Wind Turbine Foundation=套管式離岸風機基座鄰近淘刷與保護工之試驗研究 |
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作者 | 陳信宏; 楊瑞源; 黃煌煇; 江文彬; 吳念祖; Chen, Hsin-hung; Yang, Ray-yeng; Hwung, Hwung-hweng; Jiang, Wen-pin; Wu, Nian-tzu; |
期刊 | 海洋工程學刊 |
出版日期 | 20101200 |
卷期 | 10:2 2010.12[民99.12] |
頁次 | 頁185-200 |
分類號 | 443.3 |
語文 | eng |
關鍵詞 | 淘刷; 離岸風機; 套管式基座; 動床水工試驗; 淘刷保護工; Scour; Offshore wind turbine; Jacket type foundation; Movable-bed experiment; Scour protection; |
中文摘要 | 本文係於成功大學水工試驗所之大型平面試驗水池中以1/36縮尺之動床水工試驗,探討位於12m水深與16m水深套管式離岸風機基座受波流水動力作用下,其基座周遭海底床之淘刷問題。從動床水工試驗之結果可知套管式離岸風機基座鄰近海床之最大淘刷深度及其可能引致之潛勢沖刷影響範圍。分析結果顯示套管式離岸風機基座四支樁腳周遭之最大淘刷深度約爲1.11~1.31倍樁腳直徑,而可能引致之潛勢沖刷影響範圍約爲4~6倍樁與16m水深之基座保護工確實能達淘刷減緩之成效徑。基於前述大型平面試驗水池之動床水工試驗研究結果,本文亦研提在套管式離岸風機基座附近施予四層淘刷保護工用以減緩沖刷之發生,試驗結果顯示在12m水深與16m水深之基座保護工確實能達淘刷減緩之成效。 |
英文摘要 | The scour around the jacket type offshore wind turbine foundation exposed to wave and current is conducted in the Near-Shore Wave Basin (NSWB) at the Tainan Hydraulics Laboratory (THL) with the 1:36 scale moveable-bed experiment. Two locations (water depth 12m and 16m) of the foundations are separately simulated in this study. In this paper, the maximum scour depth and the potential impact scour area around the jacket type offshore wind turbine foundation is analyzed from the result of the movable-bed experiment. The result shows that the maximum scour depth around each 4 leg of the jacket type foundation is about 1.11~1.31 times the leg diameter. However, the complexity of the jacket type foundation leads to multifarious scour holes. From observations it is estimated the length of the scour holes around 4 legs of the foundation is approximated up to 4~6 times the leg diameter. Furthermore based on the analyses from the former NSWB experimental results, the suitable scour protection of a four-layer work around the foundation is also proposed to mitigate the impact of scour. Finally, a four-layer scour protection is tested and found to be effective in preventing scour around jacket type foundation of offshore wind turbines at water depth 12m and 16m. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。