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索膜屋盖结构的横风向共振问题与以往研究的高层 /高耸结构的横风向共振问题有较大区别。本文根据索膜屋盖结构的受力特点 ,发展了一种适合大跨索膜结构非线性横风向风振响应计算分析的方法 ,利用Newmark法和Newton Raphson法的思想推导了索膜结构在横风向风荷载作用下 ,结构的非线性动力增量平衡方程 ,并提出如何判别结构发生横风向共振的方法。文中还对有关参数的取值进行了讨论。最后本文利用ANSYS程序对某算例进行分析 ,得到其发生横风向共振时的风速
The transverse wind resonance problem of the membrane roof structure is quite different from the previous studies on the transverse wind resonance problem of the high-rise / high-rise structure. In this paper, according to the characteristics of the membrane roof structure, a method suitable for nonlinear wind-induced vibration response of long-span membrane structures is developed. The Newmark method and the Newton-Raphson method are used to derive the structure of the cable membrane in horizontal Wind direction wind load, the structure of nonlinear dynamic incremental balance equation and put forward how to determine the structure of the transverse wind direction resonance method. The article also discusses the value of the parameters. Finally, the ANSYS program is used to analyze an example to get the wind speed at the time of the wind-induced resonance