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Automatic classification of near‐fault pulse‐like ground motions
Computer-Aided Civil and Infrastructure Engineering ( IF 8.5 ) Pub Date : 2024-12-25 , DOI: 10.1111/mice.13408
Hongwu Yang, Yingmin Li, Weihao Pan, Lei Hu, Shuyan Ji
Computer-Aided Civil and Infrastructure Engineering ( IF 8.5 ) Pub Date : 2024-12-25 , DOI: 10.1111/mice.13408
Hongwu Yang, Yingmin Li, Weihao Pan, Lei Hu, Shuyan Ji
This study presents an automated, quantitative classification method for near‐fault pulse‐like ground motions, distinguishing between forward‐directivity and fling‐step (FS) motions. The method introduces two novel parameters—the pulse velocity ratio and pulse area ratio—which transform the classification standard from a qualitative to a quantitative framework. Combined with an enhanced pulse extraction technique that captures permanent displacement characteristics, these parameters significantly improve classification efficiency and repeatability. This automated approach overcomes the limitations of manual classification, providing reproducible results. The identified FS ground motions can be applied to the dynamic analysis of cross‐fault structures, enhancing the reliability of seismic hazard assessments.
中文翻译:
自动分类近断层脉冲状地震动
本研究提出了一种用于近断层脉冲状地震动的自动化定量分类方法,用于区分正向性和甩步 (FS) 运动。该方法引入了两个新参数 — 脉冲速度比和脉冲面积比 — 它们将分类标准从定性框架转变为定量框架。结合捕获永久位移特性的增强型脉冲提取技术,这些参数可显著提高分类效率和可重复性。这种自动化方法克服了手动分类的局限性,提供了可重现的结果。识别的 FS 地震动可应用于交叉断层结构的动力学分析,从而提高地震灾害评估的可靠性。
更新日期:2024-12-25
中文翻译:
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自动分类近断层脉冲状地震动
本研究提出了一种用于近断层脉冲状地震动的自动化定量分类方法,用于区分正向性和甩步 (FS) 运动。该方法引入了两个新参数 — 脉冲速度比和脉冲面积比 — 它们将分类标准从定性框架转变为定量框架。结合捕获永久位移特性的增强型脉冲提取技术,这些参数可显著提高分类效率和可重复性。这种自动化方法克服了手动分类的局限性,提供了可重现的结果。识别的 FS 地震动可应用于交叉断层结构的动力学分析,从而提高地震灾害评估的可靠性。