Parameters Affecting Dynamics of Three-Dimensional Seismic Isolation
Parameters Affecting Dynamics of Three-Dimensional Seismic Isolation
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DOI：
10.1080/13632469.2018.1537902
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发表时间：
2018-11
影响因子：
2.6
通讯作者：
W. Eltahawy;K. Ryan;S. Cesmeci;F. Gordaninejad
中科院分区：
文献类型：
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作者：
W. Eltahawy;K. Ryan;S. Cesmeci;F. Gordaninejad
基础隔震系统主要用于降低地震作用要求，减小地震对结构性能的影响。在这项研究中，基本的动力响应与三维（3D）的隔震系统的结构进行了探讨，使用简化的刚性块体模型。进行了参数研究，以评估不同的场地条件，结构特性和三维隔震参数对结构和轴承响应的影响。结果表明，竖向空间隔震周期的可接受范围为0.5- 1.0s，水平空间隔震周期约为竖向空间隔震周期的3-4倍，双向空间隔震阻尼均为20%。
ABSTRACT Seismic base isolation systems are mainly used to reduce seismic demands and minimize earthquake effect on structure performance. In this study, the fundamental dynamic response of structures with three-dimensional (3D) isolation systems is explored using a simplified rigid block model. A parametric study is carried out to evaluate the effect of different site conditions, structure properties and 3D isolation parameters on structure and bearing response. The results show that the acceptable range of 3D isolation periods is 0.5–1.0 s for vertical direction with horizontal isolation period around 3–4 times the vertical period and 20% damping in both directions.