论文部分内容阅读
采用线性滤波法模拟脉动风,运用有限元分析软件ANSYS分析了典型设计的500kV猫头直线塔静力风荷载下非线性稳定性及动力风荷载下的瞬态变化,基于B-R准则和位移相等准则判断了输电塔的动态失稳并予以理论验证。结果表明,脉动风对结构稳定性影响较大。
The linear filter method is used to simulate the fluctuating wind. The nonlinear stability and the transient change under the dynamic wind load of a typical 500kV cathead rectilinear tower under static wind load are analyzed by the finite element analysis software ANSYS. Based on the BR criterion and the displacement equal criterion The dynamic instability of transmission tower is judged and verified by theory. The results show that the fluctuating wind has a great influence on the structural stability.