基于频域的桅杆结构风振疲劳分析

本文基于随机振动理论对实测的桅杆结构风洞试验数据进行处理，分析了桅杆结构风振响应的频谱特性，并且从频域着手通过简单的数值运算求得足够精确的等效应力用于计算桅杆结构的风振疲劳寿命，避免了雨流点法极大的工作量。

The Study of Guyed Mast Fatigue based on Stress Spectrum under Wind Vibration

Based on the random vibration theory and the data of a wind tunnel test of guyed masts,this paper analyses the characteristic of the dynamic response spectrum caused by various wind states.The equivalent stress stage can be obtained to estimate the fatigue lifetime of guyed masts through simple calculations on the stress spectrum,so that the lengthy rainflow cycle by cycle counting can be avoided.