环形均布荷载作用下风机基础竖向应力规律研究  

Research on Vertical Stress Law of Fan Foundation Under Annular Uniform Load

作　　者：李宇翔 吴强 马燊 马俊 徐皇冈 LI Yuxiang;WU Qiang;MA Shen;MA Jun;XU Huanggang(Hunan Sany Smart New Energy Design Co.Ltd.,Changsha 415000,Hunan,China)

机构地区：[1]湖南三一智慧新能源设计有限公司,湖南长沙415000

出　　处：《南方能源建设》2024年第S01期127-134,共8页Southern Energy Construction

基　　金：湖南三一智慧新能源设计有限公司企业科技项目“大容量风机基础非线性计算分析研究项目”(2012874)。

摘　　要：[目的]采用预应力锚栓式连接设计的风机基础为目前的主流设计。预应力锚栓连接基础的受力特征为一种环形荷载的力学特征。在这种力学特征下没有详细的分析资料可以参考,设计人员往往借助有限元分析来分析此处的结构安全性,但花费时间较长。为了能够快速计算基础核心区的应力数值。[方法]文章根据摩尔库伦理论和弹性力学理论,推导了一套适用风机基础核心区设计的竖向应力计算公式,并与精细化有限元分析结果对比验证。[结果]对比结果表明,文章推导的公式具有良好的准确性及可靠度。[结论]提出的推导公式,可以作为风机基础配筋设计的依据,为工程设计所参考。[Objective]The fan foundation with prestressed anchor bolt type connection design is the mainstream design at present.The mechanical characteristic of the foundation connected by prestressed anchor bolt is a kind of circular load.There is no detailed analysis data to refer to under such mechanical characteristics.The designers often rely on finite element analysis to analyze the structural safety here,but it takes a longer time.This paper aims to quickly calculate the stress value of the core region of the foundation[Method]Based on the Mohr-Coulomb theory and elastic mechanics theory,a set of vertical stress calculation formula suitable for the design of the core area of fan foundation was derived in this paper,and compared and verified with the fine finite element analysis results.[Results]Comparative results indicate that the formulas derived in this paper demonstrate good accuracy and reliability.[Conclusion]The derived formula presented in this paper can be used as the basis of fan foundation reinforcement design and reference for engineering design.

关 键 词：陆上风电机组 基础配筋 优化设计 

分 类 号：TK89[动力工程及工程热物理—流体机械及工程] TU470[建筑科学—结构工程]