基于SACS的海上风机导管架基础疲劳参数敏感性分析

Sensitivity analysis of fatigue parameters for offshore wind turbine jacket foundation based on SACS

采用SACS软件建立海上风机导管架基础频域疲劳分析模型,选取不同波浪谱与谱参数生成波浪荷载,选用不同S-N曲线及SCF经验公式计算导管架基础及与塔筒连接部位疲劳寿命,分析关键参数对结构热点部位疲劳寿命计算结果的影响。分析表明,S-N曲线、SCF计算方法、波浪谱、腐蚀、桩土弱化作用等因素对导管架基础管节点疲劳寿命计算结果均具有较大影响。

SACS software was used to establish a frequency domain fatigue analysis model for offshore wind turbine jacket foundation,different wave spectra and spectral parameters were used to generate wave loads,and different S-N curves and SCF empirical formulas were used to calculate the fatigue life of the jacket foundation and the connection parts with the tower,and the influence of key parameters on the fatigue life calculation results of structural hot spots was analyzed.It was shown that factors such as S-N curve,SCF calculation method,wave spectrum,corrosion,and pile soil weakening have significant impact on the fatigue life calculation results of jacket foundation pipe nodes.