大容量超高塔筒风机基础设计及有限元分析

Design and Finite Element Analysis of Ultra High Wind Turbine Tower Foundation

依托泰国某风电项目,介绍了大容量超高塔筒陆上风电机组基础的设计,以及基础有限元分析方法,并对有限元计算结果进行了研究讨论。结果表明,随着风机基础的尺寸的增加,基础结构表现出了区别于常规的受力特征及变形规律。对于类似的风机基础,采用传统理论方法进行设计时的条件假设及计算结果往往与实际情况存在一定差距,需采用有限元计算对设计进行验证,并重点关注基础变形计算、结构应力和锚杆内力分析,相关结论对类似工程设计有借鉴意义。

Based on a wind power project in Thailand,this paper introduces the design of an onshore wind turbine foundation of a large capacity and super-high tower.This paper also introduces the finite element analysis on the performance of wind turbine foundation in details,and the results are evaluated.The results show that,with the increase of wind turbine foundation dimensions,the stress characteristics and deformation are different from the conventional foundation design.For the similar wind turbine foundations,there is a certain difference in the assumptions and analytical results when using the traditional theoretical method for the foundation design comparing with the actual results.It is necessary to use finite element calculation to validate the design results,especially for the foundation deformation calculation,structural stress and anchor force analysis.