目前國內針對離岸風機設計尚未有完整的設計規範，本研究根據IEC64100-3所提供之設計載重組合，並合理假設相關數據，除了考慮風、海浪、海流及水位，因台灣地理位置，更進一步考慮地震。此外根據DNVGL-RP-C203發展離岸風機結構疲勞設計程式，先由設計負載組合所得到的結構設計結果，帶入疲勞負載組合，得到桿件內力歷時，判斷其節點接頭型態及應力集中係數，簡化計算桿件斷面的集中應力，利用雨流法計數及線性毀損律，並由不同的疲勞負載及風速機率分布，計算其權重，疊加即可分析出風機壽命。以離岸風機設計壽命20年為例，當分析結果小於目標值時，將利用布羅伊登法，計算桿件斷面厚度，分析出來的結果將會滿足疲勞負載組合及設計載重組合。本研究針對套管式離岸風機，並依據規範完整分析設計載重組合，並探討高強度鍛造鋼材的總用鋼量，可作為工程設計之參考。電腦輔助分析成是由 朱聖浩教授研究團隊所開發，分析程式與研究成果皆為公開資源。

At present, there is no complete design software for offshore wind turbine design in Taiwan. Based on the design load cases provided by IEC64100-3 and reasonable assumptions, in addition to considering the wind, waves, currents and water level, this study takes the geographical location of Taiwan further considers the earthquake. In addition, according to DNVGL-RP-C203 to develop the fatigue design program of offshore fan structure, the design results of the ultimate design load cases are firstly introduced into the fatigue design load case to obtain the internal force of each element and determine the joint type and stress concentration factor (SCF) to simplify the calculation of the concentrated stress of the connect section. Second, using rainflow method count and Miner's rule, and different fatigue design load case probability and wind speed distribution, calculate the weight to get fatigue lifetime. Finally, take offshore wind turbine design lifetime as 20 years, when the analysis result is less than the target value, the Broyden method will be used to calculate the section thickness. The analysis result will reach the fatigue design load case and the ultimate design load cases simultaneously. In this study, according to the standards, a complete design load case can be analysis and design jacket-type offshore wind turbine, and the total design steel weight with high strength forging steel, which can be used as a reference for offshore wind turbine designer. Note that the computer programs developed by the research team of Shen-Haw Ju are open and free to use.

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