摘要
相比于欧洲风电场普遍存在的超固结硬黏土海床,中国海床主要由饱和软土构成,其承载力远低于欧洲风场。因此国外风力机设计无法直接应用于中国海上风电建设。该文以中国黄海软土海床某海上风场的极端荷载、土力学特性为背景,开展考虑桩-土横向循环相互作用的数值模拟,研究并比对单桩、三桩导管架和群桩3种基础支撑的海上风力机结构累积变形及疲劳性状。基于系统数值分析,给出了3种风力机基础的尺寸比选与优化设计参数。
Differing from the engineering practice of offshore wind farm construction in the Europe,where the turbine structures usually sit on overconsolidated stiff clay or dense sand,very soft clayey or silty seabed with a low bearing capacity is frequently encountered in the Chinese offshore wind farm.Therefore,the European experience cannot be directly applied to the design of offshore wind turbine structures and foundations in China.For this reason,systematic numerical analyses are performed to investigate the cumulative deformation and fatigue behaviour of offshore wind turbine supported by three typical foundations(i.e.,monopile,tripod foundation and pile group)in Yellow Sea soft soils,under the regional extreme cyclic loadings.In each analysis,the cyclic lateral pile-soil interaction is taken into account.Based on the systematic analysis,the optimized design parameters of the foundations are recommended.
作者
姜贞强
何奔
单治钢
赖踊卿
王欢
洪义
Jiang Zhenqiang;He Ben;Shan Zhigang;Lai Yongqing;Wang Huan;Hong Yi(Power China Huadong Engineering Limited Corporation,Hangzhou 310058,China;Key Laboratory of Offshore Geotechnics and Material of Zhejiang Province,Hangzhou 310058,China;College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2021年第4期386-395,共10页
Acta Energiae Solaris Sinica
基金
国家重点研发计划(2016YFC0800200)
国家自然科学基金(51779221
51909249)
浙江省重点研发计划(2018C03031)
浙江省自然科学基金(LQ19E090001)。
关键词
近海风力机
桩基础
循环荷载
疲劳损伤
失效分析
offshore wind turbine
pile foundation
cyclic load
fatigue damage
failure analysis
