高层建筑气动模型的模态形状修正

MODE SHAPE CORRECTIONS FOR AERODYNAMIC MODEL OF TALL BUILDINGS

Department of Bridge Engineering, Tongji University, Shanghai 200092;2. Chinese Eastern Architectural Design and Research Institute, Shanghai 200092

摘要: 推导了通用的适于高层建筑任意风致响应的模态形状修正公式,并与国外文献中的一些重要结论进行对比,澄清了文献中应用着的错误概念和令人误用的结论。给出了特别适于规范应用的等效风荷载的修正方法。修正方法适用于顺风向、模风向和扭转响应。
- 非理想模态振型 /
- 气动模型 /
- 风致响应
Abstract: General mode shape corrections for wind-induced responses of tall buildings are derived and compared with the previous results to clarify the misconceptions and misleading conclusions existing in the literature. A new correction procedure for equivalent wind loads is proposed, which is especially convenient for code use. Corrections are separately set out for resonant and background components in along-wind, across-wind and torsion directions. Several well-known procedures in the literature can be conceptually regarded as particular cases of the general treatment in this paper.
- non-ideal mode shapes /
- wind-induced response /
- aerodynamic testing