风荷载的几种模拟方法

风荷载是作用在结构上的重要动力荷载之一,尤其对于高层、高耸及大跨结构来说,设计中必须考虑风荷载的作用。主要介绍了几种人工生成随机序列的风荷载模拟方法:自回归法、谐波叠加法以及逆傅立叶变换法和小波分析。并给出了前两者详细的计算公式,为结构的风荷载动力分析提供借鉴。

NUMERICAL SIMULATION METHODS OF WIND LOAD

Wind load is one of the major dynamic loads on structures. Especially for high and long span buildings, it must be considered in the design. This paper represents an overview of several computational aspects on the generation procedure of wind velocity, including auto regressive method, harmony superposition method, inverse Fourier transform method and wavelet methods, which is hopeful of some use to researchers as well as practitioners in wind dynamic analysis.