多点Kaimal谱激励输电塔脉动风荷数值模拟Numerical Simulation of Fluctuating Wind on Transmission Tower Based on Kaimal Spectrum Importation Method
祝贺
ZHU He
摘要(Abstract)：
以随机振动理论及实测风速数据为基础,应用Kaimal谱模拟风速湍流,通过傅立叶频谱变换得到各点风速功率谱曲线,并应用ANSYS实现脉动风的数值模拟。在ANSYS中对输电塔结构进行结构动力特性分析,得到输电塔各节点风振位移及加速度时程曲线等数值模拟结果,数值模拟结果与现场实测结果接近。
According to random vibration theory and measured wind speed data,fluctuating wind model of transmission tower and numerical simulation are achieved by Kaimail spectrum simulated wind turbulence.Wind spectrum curves of all points are obtained by Fourier transform.Through the dynamic analysis on fluctuating wind of transmission tower,the curve of displacement-time and acceleration-time are achieved,the simulated results are approached to the actual measured results.
关键词(KeyWords)：
输电塔;Kaimal谱;脉动风;数值模拟
transmission tower;Kaimal spectrum;fluctuating wind;numerical simulation
基金项目(Foundation): 中国电机工程学会电力青年科技创新项目资助2008-16;; 吉林省教育厅“十一五”重点科研项目资助2007-51
作者(Author):
祝贺
ZHU He
DOI: 10.19585/j.zjdl.2008.05.004
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