三桩导管架基础海上风机抗倾覆能力的影响研究  

STUDY ON THE INFLUENCE OF ANTI-OVERTURNING ABILITY OF OFFSHORE WIND TURBINE BASED ON THREE PILES JACKET

作　　者：李亦泽 周文杰[1] 李威[1] LI Yize;ZHOU Wenjie;LI Wei(Zhejiang University,Hangzhou 310000,China)

机构地区：[1]浙江大学,杭州310000

出　　处：《低温建筑技术》2021年第7期119-122,共4页Low Temperature Architecture Technology

摘　　要：海上风机导管架基础因适用水深大,变形小等优点而具有广阔的应用前景。台风等极端循环荷载会造成海床土体出现一定程度的弱化,进而可能会导致风机发生倾覆。文中通过建立三桩导管架基础海上风机三维有限元数值模型,考虑桩-土作用的循环弱化,进行了极端循环荷载下导管架基础海上风机的整体动力响应分析,对整体位移、风机频率等方面进行研究。以期掌握三桩导管架基础的循环受荷特性,指导工程设计。Due to the advantages of large water depth and small deformation,the offshore wind turbine jacket foundation has a broad application prospect.The extreme cyclic load,such as typhoon,will cause a certain degree of weakening of the seabed soil,which may lead to the overturning of the wind turbine.In this paper,a three-dimensional finite element numerical model of the offshore wind turbine based on three-pile jacket was established.Considering the cyclic weakening of pile-soil action,the overall dynamic response of the offshore wind turbine based on jacket was analyzed under extreme cyclic load,and the overall displacement and frequency of the wind turbine were studied.This paper is expected to master the cyclic loading characteristics of three piles of jacket foundation and guide the engineering design.

关 键 词：桩土弱化 循环荷载 累积变形 抗倾覆 

分 类 号：TU470.3[建筑科学—结构工程]