岩土力学2018，Vol.39Issue(2)：722-727,6.DOI:10.16285/j.rsm.2016.0446
局部冲刷对风机支撑系统承载性能的影响
Influence of local scour on bearing performance of wind turbine supporting system
摘要
Abstract
As one type of green energy,offshore wind power has been paid more and more attention.There are extensive research focused on local scour of the monopile foundation.In this paper,a model of offshore wind turbine system with different scour depths is established.The static and dynamic analysis of the model is carried out.Results are in good agreement with the previous scouring model test.As the increase of scour depth,the maximum horizontal displacement,the maximum horizontal stress and the maximum bending moment values of the support system increase gradually.When the scour depth is twice the pile diameter,the maximum horizontal displacement,stress and bending moment are increased by 3.61％,12.7％ and 10.3％ respectively,comparing to those under the condition without local scour.The natural frequency of the system decreases with increase of scour depth,and frequencies of high order are more susceptible.Scour around pile foundation has a significant impact on dynamic characteristics of system.The horizontal displacement at the top of the tower constantly increases with scour depth.The influence of scour on the bearing performance of the supporting system must be considered in the design of offshore wind turbines.关键词
局部冲刷/单桩基础/冲刷深度/P-y曲线/动力响应Key words
local scour/monopile foundation/scour depth/P-y curves/dynamic response分类
能源科技引用本文复制引用
刘红军,杨奇..局部冲刷对风机支撑系统承载性能的影响[J].岩土力学,2018,39(2):722-727,6.基金项目
国家自然科学基金资助项目 (No.41572247) （No.41572247）
山东省科技攻关资助项目(No.2014GGX104007).This work was supported by the National Natural Science Foundation of China (41572247) and the Science and Technology Research Projects of Shandong Province(2014GGX104007). （No.2014GGX104007）
