地震對於離岸風機之影響探討

10.6653/MoCICHE.202210_49(5).0006

邱覺生；朱聖浩

離岸風機 ； 地震 ； 颱風 ； 土壤液化

土木水利

49卷5期（2022 / 10 / 01）

48 - 54

繁體中文

本文為為探討地震對風機影響，用土壤－結構互制作用及有限元素法對離岸風機（OWT）之支撐結構進行地震、颱風、風和波浪作用進行分析和設計，並包括保守的土壤液化分析。而隨著未來OWT朝大功率發電，功率由5MW提高到10MW、15MW乃至於20MW，葉片直徑將由178.8公尺增加至254.7公尺，無論是支撐結構尺寸或是重量都有所提升，故地震力對於海上風機的影響也將劇增。本研究針對不同發電功率的套管式（jacket-type）海上風機進行地震力之分析，透過靜載重、風載重、波浪載重、海流載重和地震載重的三維有限元素分析，以極限設計考量。其結果顯示，地震力設計對於大尺寸的海上風機是不可被忽視的。面對多地震與颱風頻繁的台灣海峽，應當採取適合及因地制宜的設計方式，以避免未來風險，降低維修成本與符合經濟效益。

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