離岸風力機支撐結構受碰撞之動態有限元素分析

FINITE ELEMENT ANALYSIS OF DYNAMIC COLLISION OF OFFSHORE WIND TURBINE SUBSTRUCTURE

陳儀諺(I-Yan Chen) ； 李家萱(Chia-Hsuan Li) ； 余姵萱(Pei-Hsuan Yu) ； 尹世洵(Shih-Hsun Yin) ； 侯建綸(Chien-Lun Hou) ； 詹育禔(Yu-Ti Jhan) ； 楊淳宇(Chun-Yu Yang) ； 宋裕祺(Yu-Chi Sung)

《中國土木水利工程學刊》 32卷8期 (2020/12) Pp. 743-753

https://doi.org/10.6652/JoCICHE.202012_32(8).0008

摘要

目前規劃之離岸風力機支撐結構以套筒式為主，其係由諸多中空管狀構件所組成，當船舶撞擊時，支撐結構與受撞擊之管狀構件的應變能消散模式可分為局部凹陷、構件塑性變形與整體結構彈性變形等。為瞭解國外對於船舶碰撞支撐結構之相關規定，本研究先以挪威石油工業標準中有關支撐結構受船舶撞擊之設計原則，利用動態有限元素法進行數值模擬分析，探討不同撞擊條件下，套筒式支撐結構受撞擊之凹陷量以及船舶與支撐結構間之能量消散相互作用關係，進而觀察套筒式支撐結構受到不同撞擊程度所造成的損傷情形，同時檢討整體結構之安全性與使用性。

關鍵字

套筒式支撐結構 ； 碰撞分析 ； NORSOK N-004

並列摘要

At present, the supporting structures of offshore wind turbines in the Taiwan Strait are mainly designed as jacket foundations. The support structure of jacket foundation is composed of many hollow tubular members. When the ship collides, the overall support structure and local tubular members are deformed to dissipate impact energy. The energy dissipation modes can be classified as localindentation, plastic deformation of components, and elastic deformation of the overall structure. According to the design principles of the Norwegian Petroleum Industry Standard (NORSOK N-004), a dynamic finite element method is used for numerical simulation to investigate the amount of deformation of the jacket-type supporting structure under different impact conditions and the interaction of energy dissipation between the ship and the supporting structure. Furthermore, the damages of offshore wind turbine structures caused by the impacts of different degrees are able to be observed to explore the safety and usability of the overall structure.

並列關鍵字

Jacket foundation ； collision analysis ； NORSOK N-004