›› 2015, Vol. 36 ›› Issue (4): 1015-1020.doi: 10.16285/j.rsm.2015.04.015

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Experimental study of the local scour around the composite bucket foundations of wind turbines under unidirectional current

YU Tong-shun1, 2，LIAN Ji-jian2，QI Yue3，WANG Hong-zhen2   

  1. 1. College of Engineering, Ocean University of China, Qingdao, Shandong 266100, China; 2. State Key Laboratory of Hydraulic Engineering Simulation and Security, Tianjin University, Tianjin 300072, China; 3. Shandong Hi-speed Qingdao Development Co., Ltd., Qingdao, Shandong 266100, China
  • Received:2014-09-22 Online:2015-04-11 Published:2018-06-13

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2025

Abstract: Composite bucket foundation is a new kind of wide-shallow foundation for offshore wind turbines. Compared to the local scour around a deep foundation such as pile foundation, scouring around composite bucket foundation can significantly influence the safety of wind turbine. According to an engineering instance, a test site for scour experiment is built and the monitoring points are displayed. A series of scale model tests is performed on the local scour around a composite bucket foundation model, and the scales of 1:20, 1:40 and 1:70 are adopted in the experiments. The morphology of the scour hole around the foundation, equilibrium scour time and maximum scour depth are investigated, and the maximum scour depth of the seabed around composite bucket foundations is determined according to the results of the scale model tests. The characteristics of local scour around composite bucket foundation are clearly captured in the experiments, providing some theoretical guidance for the application of composite bucket foundations.

Key words: composite bucket foundation, unidirectional current, local scour, experiment

CLC Number: 

  • TV 148
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