桅杆结构的风振响应分析及实验研究

Windi-Induced Responses Analysis and Wind Tunnel Test Research of Guyed Masts

基于随机振动状态向量离散分析方法 ,研究了桅杆结构的风振响应 .当考虑纤绳非线性对桅杆结构的影响时 ,采用高斯截断理论使非线性方程线性化 .通过对一实际工程和风洞试验模型的分析可以看出 ,随机振动离散分析方法能准确计算出结构响应的均值和方差 ,并且风洞试验的结果揭示了桅杆结构随机风振响应更多的特性 .

Based on the idea of the discrete analysis method of random vibration, the paper studied the wind responses of guyed masts. The Gauss truncation theory is used to linearize the nonlinear equations when taking account of the non-linearity of guys. By the discrete random vibration method it can calculate the accurate mean and mean square reaponses. The wind response results of the numerical example and the wind tunnel test model demonstrate this point. The obtained results through the wind tunnel test are satisfactory and provide more information about the random vibration behaviors of the guyed mast structure.