基于时域的超高层建筑横风向风振模拟及分析

对于某些超高层建筑,其横风向风振响应甚至超过顺风向而成为结构设计的控制性因素。为研究横风向风振响应的时程特性及变化规律,基于横风向脉动力谱,考虑风力的竖向相干性,通过谐波合成法模拟横风力时程,在时域内求解分析某超高层钢筋混凝土建筑横风向的风振响应。分析时考虑地貌、来流风速以及结构基频的变化,探讨各因素对风振响应的影响规律,为超高层建筑的抗风设计提供参考依据。

SIMULATION ANALYSIS OF ACROSS-WIND VIBRATION OF HIGH-RISE BUILDINGS BASED ON TIME DOMAIN

Because the across-wind dynamic responses of some high-rise buildings exceed the along-wind dynamic responses,the across-wind vibration would become the control factor of structure design.With the view of research on the time-history character and law of the across-wind dynamic responses,the across-wind force spectrum was adopted.After considering the vertical correlation of wind load,the across-wind time-history wind load was simulated with the harmonic-wave superposition method.Based on the above methods,...