Experimental Study on the Sinking and Leveling of A Large-Capacity Offshore Wind Turbine Five-Bucket Foundation in Sand  

作　　者：LIAN Ji-jian ZHU Hang GUO Yao-hua WANG Hai-jun YU Tong-shun 

机构地区：[1]State Key Laboratory of Hydraulic Engineering Intelligent Construction and Operation,Tianjin University,Tianjin 300072,China [2]School of Civil Engineering,Tianjin University,Tianjin 300072,China [3]Tianjin University of Technology,Tianjin 300384,China [4]College of Engineering,Ocean University of China,Qingdao 266100,China

出　　处：《China Ocean Engineering》2024年第4期586-601,共16页中国海洋工程（英文版）

基　　金：financially supported by the Open Foundation of State Key Laboratory of Hydraulic Engineering Simulation and Safety of Tianjin University(Grant No.HESS-2002)。

摘　　要：As offshore wind farms expand into deeper and farther ocean regions and the unit capacity of offshore wind turbines(OWTs)increases,there is a pressing need for a new foundation structure that can accommodate deep-sea conditions and support large capacities while maintaining economical and safe.To meet this goal of integrated transportation and one-step installation,a novel five-bucket jacket foundation(FBJF),with its suction installation and leveling methods in sand,has been proposed,analyzed and experimentally studied.First,seepage failure experiments of the FBJF at various depths were conducted,and a formula for calculating the critical suction of seepage failure suitable for the FBJF in sand was chosen and recommended for use with a range of values for the permeability coefficient ratio.Second,through leveling experiments of the FBJF at different depths,the maximum adjustable leveling angle during the sinking process was defined using seepage failure and the adjustable leveling angle of the foundation as control criteria.Various leveling control strategies were proposed and verified.Finally,an automatic sinking and leveling control system for the FBJF was developed and experimentally verified for feasibility.

关 键 词：offshore wind turbine(OWT) bucket foundation seepage failure suction installation 

分 类 号：TM315[电气工程—电机] P752[天文地球—海洋科学]