Ground motion selection based on a multi-intensity-measure conditioning approach with emphasis on diverse earthquake contents

Ghotbi Abdoul R.; Taciroglu Ertugrul

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Ground motion selection based on a multi-intensity-measure conditioning approach with emphasis on diverse earthquake contents

机译：基于多强度测量调理方法的地面运动选择，重点是各种地震内容

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摘要

One of the main tasks in performance-based seismic risk assessment and design of structures is the quantification of uncertainty due to earthquake ground motion (GM) records. Therefore, there is an optimal suite of GMs for each structure, selection of which can be an elusive task complicated by-among other things-the fact that structural behavior migrates into load-path-dependent inelastic regimes as damage begins to accumulate. To facilitate the selection of an optimal GM suite, the GM selection based on a generalized conditional single-intensity-measure approach will be enhanced herein to allow users to select GMs based on two and average of more-than-two conditioning intensity measures. To formulate this task, an intensity measure vector consisting of several intensity measures will be populated to represent earthquake's amplitude-, duration-based, and cumulative characteristics. The idea of two and average conditioning intensity measures will then be formulated by considering the correlation between the intensity measures in the vector with two and average of more-than-two intensity measures, simultaneously. The cross-correlation between the intensity measures in the vector will also be considered to ultimately form a conditional multivariate distribution from which one could draw any number of realization samples to find matching earthquake records so that the hazard consistency concept can be fully enforced.

机译：基于性能的地震风险评估和结构设计的主要任务之一是由于地震地面运动（GM）记录而定量不确定性。因此，每个结构都有最佳的GMS套件，其选择可以是一个难以捉摸的任务，包括逐渐复杂的任务 - 以及结构行为迁移到负载路径依赖性的无弹性方案中，因为损坏开始积累。为了便于选择最佳GM套件，本文将增强基于广义条件单强度 - 测量方法的GM选择，以允许用户基于两个和平均调节强度措施选择GMS。为了制定这项任务，将填充由多个强度测量组成的强度测量向量，以表示地震的幅度，持续时间和累积特性。然后，通过考虑向量中的向量中的强度测量与平均电压措施的平均值，同时，将制定两个和平均调节强度测量的思想。载体中的强度措施之间的互相关性也将被认为最终形成有条件的多变量分布，从中可以从中抽出任何数量的实现样本来查找匹配的地震记录，以便可以完全强制执行危险一致性概念。

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来源
《Earthquake Engineering & Structural Dynamics》 |2021年第5期|1378-1394|共17页
作者
Ghotbi Abdoul R.; Taciroglu Ertugrul;
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作者单位

Univ Calif Los Angeles Dept Civil & Environm Engn Los Angeles CA USA;

Univ Calif Los Angeles Dept Civil & Environm Engn Los Angeles CA USA;

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正文语种 eng
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ground motion selection; generalized conditional intensity measure; multiple conditioning intensity measures; performance#8208; based seismic assessment; hazard consistency;

机译：地面运动选择;广义条件强度测量;多种调节强度措施;基于性能的地震评估;危险一致性;

Ground motion selection based on a multi-intensity-measure conditioning approach with emphasis on diverse earthquake contents

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