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A New Spectral Shape-Based Record Selection Approach Using N_p and Genetic Algorithms

机译：基于N_p和遗传算法的基于谱形状的记录选择新方法

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摘要

With the aim to improve code-based real records selection criteria, an approach inspired in a parameter proxy of spectral shape, named N_p, is analyzed. The procedure is based on several objectives aimed to minimize the record-to-record variability of the ground motions selected for seismic structural assessment. In order to select the best ground motion set of records to be used as an input for nonlinear dynamic analysis, an optimization approach is applied using genetic algorithms focuse on finding the set of records more compatible with a target spectrum and target N_p values. The results of the new N_p-based approach suggest that the real accelerograms obtained with this procedure, reduce the scatter of the response spectra as compared with the traditional approach; furthermore, the mean spectrum of the set of records is very similar to the target seismic design spectrum in the range of interest periods, and at the same time, similar N_p values are obtained for the selected records and the target spectrum.
机译：为了改善基于代码的真实记录选择标准，分析了一种在频谱形状参数代理（N_p）中得到启发的方法。该程序基于几个目标，旨在最大程度地减少为地震结构评估选择的地震动的记录间差异。为了选择最佳的地面运动记录集以用作非线性动态分析的输入，采用了一种遗传算法来优化方法，该算法着眼于找到与目标光谱和目标N_p值更兼容的记录集。基于N_p的新方法的结果表明，与传统方法相比，通过此过程获得的真实加速度图减少了响应谱的分散；此外，在感兴趣的时间段内，记录集的平均频谱与目标地震设计频谱非常相似，同时，对于选定的记录和目标频谱，获得了相似的N_p值。

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  • 来源
    《Mathematical Problems in Engineering》 |2013年第1期|679026.1-679026.9|共9页
  • 作者

    Eden Bojorquez; Alfredo Reyes-Salazar; Sonia E. Ruiz; Juan Bojorquez;

  • 作者单位

    Facultad de Ingenieria, Universidad Autonoma de Sinaloa, Ciudad Universitaria, Calzada de las Americas y Boulevard Universitarios S/N, 80040 Culiacan Rosales, SIN, Mexico;

    Facultad de Ingenieria, Universidad Autonoma de Sinaloa, Ciudad Universitaria, Calzada de las Americas y Boulevard Universitarios S/N, 80040 Culiacan Rosales, SIN, Mexico;

    Coordination de Mecanica Aplicada, Institute de Ingenieria, Universidad National Autonoma de Mexico,Ciudad Universitaria, 04510 Coyoacan, DF, Mexico;

    Coordination de Mecanica Aplicada, Institute de Ingenieria, Universidad National Autonoma de Mexico,Ciudad Universitaria, 04510 Coyoacan, DF, Mexico;

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