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本文通过运用ANASYS建模分析了交错桁架结构的自振周期和振型特点,证明了此结构属弯扭耦连振动特性较强的高层建筑结构,对其抗风抗震设计中考虑扭转的情况下建议采用CQC法。且此结构纵向抗侧力构件的刚度问题需要引起重视。
In this paper, by using ANASYS modeling, the natural period and mode shape of staggered truss structure are analyzed. It is proved that this structure belongs to high-rise building structure with strong coupling of torsional and torsional vibration. Considering torsion in the anti-wind and anti-seismic design It is recommended to adopt CQC method. And the longitudinal stiffness of this structure must be taken into consideration.