脆弱性
涡轮机
下部结构
海上风力发电
脆弱性(计算)
工程类
脆弱性评估
可靠性工程
结构工程
海洋工程
计算机科学
机械工程
心理学
化学
物理化学
心理弹性
心理治疗师
计算机安全
作者
Yusong Cheng,Yan Luo,Jianze Wang,Kaoshan Dai,Wenze Wang,Ashraf El Damatty
标识
DOI:10.1016/j.engstruct.2023.116625
摘要
Wind technology is an effective solution for the carbon neutral over the world. Offshore wind turbines (OWTs) have therefore seen unprecedented development over the decades. Fragility and vulnerability of OWTs are vital in structural performance evaluation and risk assessment of infrastructural systems under natural hazards. Previous research mainly focused on the fragility of OWTs with monopile substructure in the normal operating or parked conditions. In the present study, a realistic situation with respect to the emergency shutdown mode is considered for the OWTs with monopile, tripod, and jacket substructures. A procedure to establish fragility and vulnerability models is developed. Numerical models using a combination of FE software are implemented and validated for dynamic analyses and pushover analyses. Then, the fragility and vulnerability models of the main structural subsystems including rotor, nacelle, tower, and substructure are separately established according to the developed procedure, so as to the fragility and vulnerability models of the whole wind turbine. Besides, impact of operational condition and characteristics of substructure on fragility and vulnerability is comprehensively compared and discussed.
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