套筒式離岸風機之結構模擬分析－以彰化示範風場為例

STRUCTURAL SIMULATION ANALYSIS OF JACKET OFFSHORE WIND TURBINE - TAKING CHANGHUA DEMONSTRATION WIND FARM AS AN EXAMPLE

10.6652/JoCICHE.202309_35(5).0002

張景鐘(Jing-Jong Jang)；王昱然(Yu-Jan Wang)

套筒式離岸風機 ； 結構分析 ； SAP2000 ； jacket offshore wind turbines ； structure analysis ； SAP2000

中國土木水利工程學刊

35卷5期（2023 / 09 / 01）

451 - 461

繁體中文;英文

本研究主要探討套筒式離岸風機在極端氣候影響下支撐結構的承載能力，作為台灣在建置離岸風機工程結構設計時之參考依據。台灣建置離岸風機目前正處於蓬勃發展階段，然而國內的離岸風機海事工程相關領域尚未成熟，仍需仰賴國外的技術支援與海上施工設備之輔助，但是國外的設計參數規範未必完全適用於台灣海峽之極端環境條件；因此，本研究在極端海氣象情況下除了檢視其支撐結構穩定性外，也探討和提出容易受破壞之構件處。初始條件假設套筒式離岸風機實際坐落在台灣彰化海域（風機示範風場）內，收集該地區歷年颱風海象、氣象統計資料，以極值統計方法推算出各年重現期之風、波浪載重條件，依序指定不同作用方向施加於支撐結構體上。研究成果顯示套筒式結構易受破壞處為承受高應力負載之桿件交接處，而發生支撐結構不穩定之條件為極端風、波浪側向載重同時45度作用於結構體，使其單支撐柱受壓之情況。

The main purpose of this research is to understand the stability of Jacket foundation under the influence of extreme climate of Taiwan. The jacket foundation will be placed offshore wind farm testing center in Changhua, with the test based on the external structural load and the environmental conditions which statistical data of typhoon, sea, and weather forecast over the years will be collected to calculate each year's typhoon recurrence interval and wave load using extreme value analysis. The calculated values will be used to apply different types of forces onto the jacket foundation. The results conclude that the vulnerable parts of the Jacket structure are the joints with high stress loads. On the other hand, the conditions of instability of the Jacket foundation are wave force acting on the structure at 45 degrees simultaneously, causing a situation where a single leg comes under pressure.

1. (2010).DNV Recommended Practice DNV-RP-C203.
2. Bossanyi, E.(2000).Bladed for windows user manual.Bristol, UK:Garrad Hassan and Partners.
3. Goda, Y.(2008)。港灣構造物 の 耐波設計。Japan:Kajima Publishing Co.。
4. I. E. C.=IEC(2009).Wind Turbines-Part 3: Design Requirements for Offshore Wind Turbines (IEC 61400-3).London, UK:
5. Jalbi, S.,Nikitas, G.,Bhattacharya, S.,Alexander, N.(2019).Dynamic design considerations for offshore wind turbine jackets supported on multiple foundations.Marine Structures,67,102631.
6. Jonkman, J.,Butterfield, S.,Musial, W.,Scott, G.(2009).,USA:National Renewable Energy Laboratory.
7. Kauzlarich, J.(1989).The Palmgren-Miner rule derived.Tribology Series,14,175-179.
8. Kim, B. s.,Jin, J. w.,Bitkina, O.,Kang, K. w.(2016).Ultimate load characteristics of NREL 5‐MW offshore wind turbines with different substructures.International Journal of Energy Research,40(5),639-650.
9. Lai, W.-J.,Lin, C.-Y.,Huang, C.-C.,Lee, R.-M.(2016).Dynamic analysis of Jacket Substructure for offshore wind turbine generators under extreme environmental conditions.Applied Sciences,6(10),307.
10. Popko, W.,Vorpahl, F.,Zuga, A.,Kohlmeier, M.,Jonkman, J.,Robertson, A.,Larsen, T. J.,Yde, A.,Sætertrø, K.,Okstad, K. M.(2012).Offshore Code Comparison Collaboration Continuation (OC4), Phase 1-Results of Coupled Simulations of an Offshore Wind Turbine With Jacket Support Structure.The 22th International Offshore and Polar Engineering Conference
11. USACE, C.(2002).Coastal engineering manual. Engineer Manual.
12. Van der Male, P.,Vergassola, M.,van Dalen, K. N.(2020).Decoupled modelling approaches for environmental interactions with monopile-based offshore wind support structures.Energies,13(19),5195.
13. 林宗岳,吳凱洋(2016)。套管式離岸風機於極限颱風核地條件下之負荷評估。第二十八屆中國造船暨輪機工程研討會
14. 許泰文(2021)。,經濟部標準檢驗局。
15. 簡志宇,黃心豪,吳凱洋,林宗岳,范秉天(2017)。四種離岸風機桁架式支撐結構之疲勞壽命評估。機械新刊