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Seismic response of elastic multidegree of freedom oscillators placed on the top of rocking storey

机译：摇摆楼顶部的自由式振荡器弹性多方面的地震反应

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In the present study, the seismic response of multistorey structures placed on the top of a rocking storey is examined. For this purpose, an analytical model that allows the interaction of all vibration modes of the superstructure with the rocking base is introduced. As uplift of the rocking base modifies the dynamic properties of the superstructure, modal analysis is performed and the vibration mode properties during rocking are demonstrated. Subsequently, dynamic time history analyses are performed and the effect of higher vibration modes of the superstructure on the rocking response is investigated. In addition, the seismic demands of the superstructure as well as their distribution throughout the storeys are examined. The results indicate that the higher vibration modes affect the rocking response of the base, although their influence depends on the stiffness of the superstructure. Furthermore, the seismic demands of the superstructure depend primarily on the size of the rocking columns. Finally, during rocking response all the vibration modes are excited and contribute to the distribution of the seismic loads throughout the floors of the superstructure.
机译：在本研究中，研究了放置在摇摆山顶上的多体结构的地震响应。为此目的，引入了一种分析模型，其允许与摇摆基座的所有振动模式的相互作用。由于摇摆底座的隆起改变了上层建筑的动态性质，因此进行了模态分析，并且证明了摇摆期间的振动模式性能。随后，研究了动态时间历史分析，并研究了上部结构在摇摆响应上的较高振动模式的效果。此外，检查了在整个楼层的上层建筑的地震要求以及它们的分布。结果表明，较高的振动模式影响基座的摇摆响应，尽管它们的影响取决于上层建筑的刚度。此外，上部结构的地震要求主要取决于摇摆柱的尺寸。最后，在摇摆反应期间，所有振动模式都被激发并有助于在上部结构的整个楼层的地板上的分布。

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