江淮水利科技Issue(3)：1-8,8.DOI:10.20011/j.cnki.JHWR.202403001
砂土刚度衰减模型在海上风电工程中的应用
Application of stiffness attenuation model of sandy soil in offshore wind power engineering foundation
摘要
Abstract
The loading environment of offshore wind turbine foundations is complex,characterized by cyclic loads such as wind,waves,and currents.Under the influence of these cyclic loads,the sandy soil foundation may undergo liquefaction,which can readily result in structural instability and overturning.Existing general finite element software encounters challenges in directly obtaining accurate calculation results.The degradation stiffness model of sandy soil is a effective method for analyzing sand foundation under cyclic lateral loading.This paper used FORTRAN77 language to compile a subprogram,which was embedded into the ABAQUS calculation core.The finite element models of large-diameter single pile foundation,barrel foundation and jacket foundation were established,and the deformation rule of the structure under cyclic loading and the development trend of material stiffness were analyzed.The results showed that the accuracy and generality of the subprogram satisfy the analysis re-quirements and can be used as a reference for engineering design.关键词
海上风电基础/砂土刚度衰减模型/循环承载工况/子程序Key words
offshore wind power foundation/stiffness attenuation model of sandy soil/cyclic lateral loading/subprogram分类
建筑与水利引用本文复制引用
胡烨之,张雅琪,卢昌红..砂土刚度衰减模型在海上风电工程中的应用[J].江淮水利科技,2024,(3):1-8,8.基金项目
国家自然科学基金项目(52079035) （52079035）
