论文部分内容阅读
基于超高层建筑的质点系简化模型,构造等效水平力偶代替重力引起的附加倾覆弯矩,并将该水平力偶项转化为一个附加刚度矩阵,只需要将原有刚度矩阵减去该附加刚度矩阵,即可实现常规风振响应分析方法框架下的考虑P-Δ效应的结构风振响应分析。将上述方法应用于432m高的广州西塔风振响应分析中,结果表明:考虑P-Δ效应后,在敏感风向角下的顶部峰值位移、峰值加速度和基底倾覆弯矩均比不考虑P-Δ效应时有显著增大,说明超高层建筑风致振动的P-Δ效应应该得到足够的重视。
Based on the simplified model of the mass points in the superstructure, the equivalent overturning moment is replaced by the equivalent level couple, and the horizontal force term is converted into an additional stiffness matrix by subtracting the original stiffness matrix from the additional stiffness matrix , The structure wind-induced vibration response considering the P-Δ effect under the conventional wind-induced response analysis method can be realized. The above method is applied to the wind-induced response analysis of Guangzhou west tower at a height of 432m. The results show that the top peak displacements, peak accelerations and overturning moments under sensitive wind direction angles are less than P-Δ The effect is significantly increased, indicating that the P-Δ effect of wind-induced vibration of super-tall buildings should be given enough attention.