悬挑屋盖多模态和交叉项对风激动力响应影响

Effect of Multi-mode and Cross Part of Mode on Wind-induced Dynamic Response for Cantilevered Roof of Stadium

在已进行的悬挑屋盖脉动风模态位移自谱和互谱研究的基础上 ,重点分析了越南国家体育场屋盖前 10阶脉动风模态位移自谱响应、背景和共振风响应 ;研究多个模态特别是模态交叉项对风激动位移响应的影响 。

The paper emphasized on the analysis of the dynamic wind response of the power spectral density (PSD) function of the mode displacement,the background and the resonance up to the 10th mode of National Sports Complex of Vietnam based on the research of the PSD function and the cross spectral density function of the mode displacement of the fluctuating wind on the cantilevered roof.Moreover,we studied the effect of the multi-mode,especially the cross part of mode displacements on the wind induced dynamic displacement and gained the laws of the dynamic wind response of the windward roof and the leeward roof.