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Dong-Ju Kim, Young-Suk You and Min-Young Sun
Offshore wind turbines (OWTs) are exposed to cyclic loads resulting from wind, waves, and rotor rotation. These loads can induce resonance, thereby significantly increasing the amplitude of the structure and accelerating the accumulation of fatigue damag...
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Deokhee Won, Jihye Seo, Osoon Kwon, Hae-Young Park and Hyoun Kang
The foundations of offshore wind power can be classified as floating, tripod, jacket, monopile, or gravity-based, depending on the support type. In the case of tripod- and jacket-type supports, the structures require precise construction. There are two m...
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Fan Zhang, Guoliang Dai, Weiming Gong, Qian Yin and Xueying Yang
Scour is a common phenomenon for laterally loaded underwater piles. The underwater piles used in different projects have different pile head conditions and pile types (flexible and rigid). On the one hand, an increasing number of rigid piles have begun t...
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Ruping Luo, Mingluqiu Hu, Min Yang, Weichao Li and Anhui Wang
Rigid monopiles with small slenderness ratios (i.e., ratio of monopile embedded length to outer diameter) are widely used as foundations to resist lateral load and moment transferred from superstructures, e.g., large diameter steel pipes used by offshore...
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Jian-Hong Wan, Rui Bai, Xue-You Li and Si-Wei Liu
Assessment of the natural frequency of the offshore wind turbine (OWT) system is a critical task in design to avoid resonance. The natural frequency of the monopile supported OWT may change during operation and needs to be calculated regularly. Conventio...
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Jie Zhang, Kanmin Shen, Bin Wang, Guangyuan Wen and Sa Li
At present, there is no commonly used method for predicting soil resistance to the driving (SRD) of monopiles, because all available methods are developed based on an installed offshore pile with a diameter of 2?3 m. In addition, due to the complexity of...
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Jiayi Shen, Chang Ge, Yide Zhan, Zhaoyi Ye, Qiang Zhang and Jiawang Chen
Currently, p-y models have been broadly adopted for estimating the lateral bearing capacity of large-diameter monopiles in offshore engineering. However, the existing p-y curves cannot reflect the effect of pile diameter D on the lateral response of mono...
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Sijia Deng, Ming Qin, Dezhi Ning, Lin Lin, Songxiong Wu and Chongwei Zhang
Monopiles are commonly utilized in offshore wind farms but are prone to non-linear wave loads and run-ups, significantly affecting their engineering design. Therefore, it is crucial to pursue a complete understanding of the non-linear wave action on mono...
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Yongqing Lai, Wei Li, Ben He, Gen Xiong, Renqiang Xi and Piguang Wang
At present, monopile-supported offshore wind turbines (MOWTs) are widely used in offshore wind farms. The influence of blade flexibility on the dynamic behaviors of MOWTs excited by waves and earthquakes was investigated in this study. Numerical analysis...
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Bo Sun, Qi Zhang, Wenxuan Zhu, Jian Leng and Guanlin Ye
Monopiles are commonly used in the construction of offshore wind turbines. However, implementing drive-drill-drive construction techniques in decomposed granite seabed may lead to borehole instability during the window period between drilling and pile dr...
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