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Earthquake response and isolation effect analysis for separation type three-dimensional isolated structure

机译:分离式三维隔离结构的地震响应与隔离效应分析

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摘要

This study proposes a design method for separation type three-dimensional isolated structure in which the horizontal and vertical isolation layers are separated for decoupling purpose. In this system, multiple guide rails are used vertically to limit the lateral displacements of upper structure while providing adequate overturning moment resistance. In this paper, a general formulation was proposed firstly to define two critical parameters, i.e., the rotation coefficient and the rotational displacement coefficient, the latter of which correlates the rotation-induced displacement and the total horizontal displacement. Subsequently, a separation type three-dimensional isolated structure model using the proposed method was established to evaluate its isolation effect through shaking table test, and a similar non-isolated structure model was also tested for comparison purpose. An analytical model was established for comparison to the experimental results. Experimental results show that the acceleration responses of the separation type three-dimensional isolated structure model are much less than the non-isolated model in both horizontal and vertical direction, demonstrating a desirable isolation effect for the isolated structure. In the meantime, the vertical guide rails benefits significantly to the overturning moment resistance.
机译:本研究提出了一种用于分离型三维隔离结构的设计方法,其中水平和垂直隔离层被分离以进行去耦目的。在该系统中,多个导轨垂直使用以限制上部结构的横向位移,同时提供足够的倾覆力矩阻力。在本文中,首先提出了一般的制剂,以限定两个关键参数,即旋转系数和旋转位移系数,其后者与旋转引起的位移和总水平位移相关联。随后,建立了使用该方法的分离型三维隔离结构模型,以通过振动台试验评估其隔离效果,并且还测试了类似的非隔离结构模型以进行比较目的。建立了分析模型与实验结果相比。实验结果表明,分离型三维隔离结构模型的加速度响应小于水平和垂直方向上的非隔离模型,证明了隔离结构的理想隔离效果。同时,垂直导轨的垂直导向轨道显着效益于推翻的力矩阻力。

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