Hydrodynamic Characteristics of Three-Bucket Jacket Foundation for Offshore Wind Turbines During the Lowering Process  

作　　者：ZHANG Pu-yang QI Xin WEI Yu-mo ZHANG Sheng-wei LE Cong-huan DING Hong-yan 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China [2]School of Civil Engineering,Tianjin University,Tianjin 300072,China

出　　处：《China Ocean Engineering》2023年第1期73-84,共12页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Grant No.52171274)。

摘　　要：The three-bucket jacket foundation is a new type of foundation for offshore wind turbine that has the advantages of fast construction speed and suitability for deep water. The study of the hoisting and launching process is of great significance to ensure construction safety in actual projects. In this paper, a new launching technology is proposed that is based on the foundation of the three-bucket jacket for offshore wind turbine. A complete time domain simulation of the launching process of three-bucket jacket foundation is carried out by a theoretical analysis combined with hydrodynamic software Moses. At the same time, the effects of different initial air storage and sea conditions on the motion response of the structure and the hoisting cable tension are studied. The results show that the motion response of the structure is the highest when it is lowered to 1.5 times the bucket height. The natural period of each degree of freedom of the structure increases with the increase of the lowering depth. The structural motion response and the hoisting cable tension vary greatly in the early phases of Stages Ⅰ and Ⅲ, smaller in Stage Ⅱ, and gradually stabilize in the middle and late phases of Stage Ⅲ.

关 键 词：three-bucket jacket foundation time domain simulation hoisting construction motion response offshore wind turbine 

分 类 号：P75[天文地球—海洋科学]