Numerical Study on the Dynamic Response of an Offshore Converter Platform with Integrated Equipment During Float-Over Installation

Zhenqiang Jiang, Weiwei Wu, Tianchai Wang, Zhenzhou Sun, Bo Zhang, Guohai Dong and Chunwei Bi ()
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Zhenqiang Jiang: Power China Huadong Engineering Corporation, Hangzhou 311122, China
Weiwei Wu: China Power Construction (Wenzhou) Green Energy Development Co., Ltd., Hangzhou 311122, China
Tianchai Wang: China Power Construction (Wenzhou) Green Energy Development Co., Ltd., Hangzhou 311122, China
Zhenzhou Sun: Power China Huadong Engineering Corporation, Hangzhou 311122, China
Bo Zhang: State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Guohai Dong: State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116024, China
Chunwei Bi: Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China

Energies, 2025, vol. 18, issue 21, 1-21

Abstract: With the transformation of the global energy structure, offshore wind power is developing on a large scale, and the efficient and safe installation of offshore converter platforms has become a key technological bottleneck. Based on the elastic force–gravity similarity principle, a 1:65 model scale was adopted. A physical model of the offshore converter station platform was constructed, and the accuracy of the numerical simulation was validated by comparison with the physical model tests. This study investigates the dynamic response of the offshore converter platform and converter valve equipment during the float-over installation and mating process. The structural dynamic responses at key positions were analyzed. The results indicate that, due to the slender and flexible structure of the converter valve equipment, the Z-direction acceleration at the top is about 20% higher than that at the bottom. Moreover, the stress and strain at the bottom connection with the deck are higher than those at the top. The Y-direction acceleration at the edge foundation beam of the platform module is 47% higher than that at the mid-span position. The vibration frequency of the foundation beam on the first floor with the converter valve arranged is increased by 15%. When the jacket piles are subjected to impact, the mid-span response is 25% higher than that at the edges, showing characteristics of “strong at mid-span and weak at the edges”.

Keywords: converter platform; numerical simulation; coupling analysis; dynamic response (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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