Experimental Investigation of Wave Load and Run-up on the Composite Bucket Foundation Influenced by Regular Waves  

作　　者：YU Tongshun ZHAO Zishuai SHI Zhongyu XU Yu 

机构地区：[1]College of Engineering,Ocean University of China,Qingdao 266100,China [2]Shandong Provincial Key Laboratory of Ocean Engineering,Qingdao 266100,China [3]State Key Laboratory of Hydraulic Engineering Simulation and Safety,Tianjin University,Tianjin 300072,China

出　　处：《Journal of Ocean University of China》2021年第2期271-284,共14页中国海洋大学学报（英文版）

基　　金：financially supported by the funds for the National Natural Science Foundation of China (Nos. 51509230 and 52071304);the Primary Research&Development Plan of Shandong Province (No. 2019GHY 112044)。

摘　　要：In the design of wind turbine foundations for offshore wind farms, the wave load and run-up slamming on the supporting structure are the quantities that need to be considered. Because of a special arc transition, the interaction between the wave field and the composite bucket foundation(CBF) becomes complicated. In this study, the hydrodynamic characteristics, including wave pressure, load, upwelling, and run-up, around the arc transition of a CBF influenced by regular waves are investigated through physical tests at Shandong Provincial Key Laboratory of Ocean Engineering, Ocean University of China. The distributions of the wave pressures and upwelling ratios around the CBF are described, and the relationship between the wave load and the wave parameters is discussed. New formulae based on the velocity stagnation head theory with linear wave theory and the second-order Stokes wave theory for wave kinematics are proposed to estimate the wave run-up. Moreover, the multiple regression method with nonlinear technology is employed to deduce an empirical formula for predicting run-up heights. Results show that the non-dimensional wave load increases with the increase in the values of the wave scattering parameter and relative wave height. The wave upwelling height is high in front of the CBF and has the lowest value at an angle of 135? with the incoming wave direction. The performance of the new formulae proposed in this study is compared using statistical indices to demonstrate that a good fit is obtained by the multiple regression method and the analytical model based on the velocity stagnation head theory is underdeveloped.

关 键 词：physical experiment composite bucket foundation wave load wave run-up regular waves 

分 类 号：TM614[电气工程—电力系统及自动化] P752[天文地球—海洋科学]