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高层隔震建筑的隔震层在罕遇地震作用下会产生拉应力。本文通过对一栋20层的高层隔震结构,分别采用等拉压刚度模型和不等拉压刚度模型进行动力非线性时程分析,研究叠层橡胶隔震支座竖向刚度模型对高层基础隔震结构动力响应的影响。研究表明,超出线弹性工作范围后,竖向等拉压刚度模型将会低估隔震层的竖向位移量,低估上部结构的动力响应。
Isolation of high-rise buildings in the rare seismic earthquake will produce tensile stress. In this paper, a 20-storey high-rise seismic isolation structure is adopted, and the dynamic nonlinear time-history analysis is carried out using the models of the tension-compression stiffness and the tension-compression stiffness model respectively. The effects of the vertical stiffness model of the laminated rubber- Influence of Dynamic Response of Seismic Isolation Structure. Research shows that beyond the linear elastic working range, the vertical tensile-compression stiffness model will underestimate the vertical displacement of the seismic isolation layer and underestimate the dynamic response of the superstructure.