Earthquakes, Records, and Nonlinear Responses
Earthquakes, Records, and Nonlinear Responses
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DOI：
10.1193/1.1586011
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发表时间：
1998-08
影响因子：
5
通讯作者：
N. Shome;C. Cornell;P. Bazzurro;J. E. Carballo
中科院分区：
文献类型：
--
作者：
N. Shome;C. Cornell;P. Bazzurro;J. E. Carballo
针对诸如以下问题，研究了在距离为\(R\)处发生震级为\(M\)的地震时多自由度（MDOF）非线性结构响应的估计：（1）首先对记录进行缩放的利弊；（2）从“错误”震级中选择记录；（3）如何缩放记录的替代选择；以及（4）将记录缩放到明显更高或更低的强度等。我们发现，适当选择缩放方法可以将非线性分析次数的必要性降低约四分之一，并且适当的缩放不会引入任何偏差。考虑了几种整体和局部的非线性损伤度量。使用了一个钢结构的五自由度模型；其他情况正在研究中。本文最后演示了如何在估计超过特定层间延性（位移）或其他损伤度量的年概率时使用这些结果。
The estimation of MDOF nonlinear structural response given an earth-quake of magnitude M at distance R is studied with respect to issues such as the benefits and harms of (1) first scaling the records, (2) selecting records from the “wrong” magnitude, (3) alternative choices for how to scale the records, and (4) scaling records to a significantly higher or lower intensity, etc. We find that properly chosen scaling can reduce the necessity of the number of nonlinear analyses by a factor of about four, and that proper scaling does not introduce any bias. Several global and local nonlinear damage measures are considered. A five-DOF model of a steel structure is used; other cases are under study. The paper finishes with a demonstration of the use of such results in the estimation of the annual probability of exceeding a specified interstory ductility (drift) or other damage measures.