【摘要】 小波变换因其在时-频两域都具有表征信号局部特征的能力而成为非平稳信号分析的有力工具,在土木工程的各个领域得到了广泛应用。简要介绍了小波变换的基本原理,系统总结了近年来小波分析在结构风工程中的风荷载模拟、风场特性研究、风与风压的相互关系以及模态参数识别中的国内外现状,并对小波变换在结构风工程中的应用前景进行了展望。更多还原

【Abstract】 Wavelet transformation has been widely used in civil engineering since it can provide insight into features of transient signals through time-frequency maps of a time-varying spectral decomposition that traditional approaches based on Fourier transformation miss. Here, the basic principles of wavelet transformation are introduced firstly, and then, the current status of wavelet analysis in both domestic and abroad structural wind engineering is presented with some demonstrations, including wind load simulation, wind field analysis, relation between turbulence scales in atmospheric wind and its surface pressure on a building, and structural modal parameter identification. Finally, the perspective of wavelet analysis in structural wind engineering is presented based on the above analyses and discussions.更多还原