钢筋混凝土式风机基础抗扭刚度计算试验研究

摘要

风电机组的基础整体抗扭刚度是复合地基基础设计的一项关键性参数.通过应用ANSYS建立有限元模型并对结构进行分析,提取和变换相应的刚度矩阵,确定包括地基在内的风机基础扭转刚度,最后与根据规范计算得到的结果进行比对验证,可知该简化的有限元方法可靠、有效,提供了一个对于计算复合基础扭转刚度行之有效的方法.%Overall torsional stiffness of the foundation of wind turbine is a key parameter in composite foundation design.For studying the overall torsional stiffness,the finite element model is established by applying ANSYS and the structure is analyzed,and then the overall torsional stiffness of wind turbine foundation including groundsi11 is obtained by extracting and transforming corresponding stiffness matrices.The stiffness value is also compared with the calculation result based on corresponding specification,and shows that the simplified finite element method is reliable and effective.This study provides an effective method for calculating overall torsional stiffness of composite foundation.