基于风速变化的基础环式风机基础受力特性研究  

Research on Mechanical Characteristics of Foundation Ring of Wind Driven Generator Based on Wind Speed Variation

作　　者：文倩 李建平 WEN Qian;LI Jianping(Changsha University of Science and Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学,湖南长沙410114

出　　处：《河南科技》2023年第18期31-34,共4页Henan Science and Technology

摘　　要：【目的】研究风机基础混凝土的受力特性。【方法】根据叶素-动量理论,计算出不同风速下风机塔顶水平荷载,并用ABAQUS有限元软件建立风机基础模型,进行数值模拟分析。【结果】分析得到基础混凝土受力随风速的变化情况。【结论】研究表明:风机水平推动力随风速的增长先增大后减小。风速为12.0 m/s时,混凝土最大拉应力接近其强度限值。基础混凝土应力集中区域处于基础环下法兰周围混凝土。[Purposes]This paper aims to study the mechanical characteristics of foundation concrete of wind driven generator.[Methods]The horizontal load on the top of tower of wind driven generator under different wind speeds was calculated according to the folian-momentum theory,and the foundation of⁃wind driven generator model was established by ABAQUS finite element software for numerical simula⁃tion analysis.[Findings]The change of the force on foundation concrete with wind speed was obtained.[Conclusions]The research shows that:The horizontal driving force of the wind driven generator in⁃creases first and then decreases with the increase of wind speed.The stress concentration area of founda⁃tion concrete is in the concrete around the flange under the foundation ring.The maximum tensile stress of concrete is close to its strength limit when the wind speed is 12.0 m/s.

关 键 词：风机基础 风荷载计算 数值模拟 

分 类 号：TU470.3[建筑科学—结构工程]