瑞利阻尼模型中模型不确定性的量化

IF 4.3 2区 工程技术 Q1 ENGINEERING, CIVIL Earthquake Engineering & Structural Dynamics Pub Date : 2024-05-09 DOI:10.1002/eqe.4143
Farid Ghahari, Khachik Sargsyan, Ertugrul Taciroglu
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引用次数: 0

摘要

了解并准确描述民用建筑在地震中的能量耗散机制是地震评估和设计的重要内容。最常用的模型是瑞利模型。本文提出了一种系统方法来量化与瑞利阻尼模型相关的不确定性。采用内嵌模型误差的贝叶斯校准法,利用模态阻尼比将瑞利模型的系数视为随机变量。通过一个数值示例,我们说明了这种方法的工作原理,以及校准模型如何解决与瑞利阻尼模型相关的建模不确定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Quantification of modeling uncertainty in the Rayleigh damping model

Understanding and accurately characterizing energy dissipation mechanisms in civil structures during earthquakes is an important element of seismic assessment and design. The most commonly used model is attributed to Rayleigh. This paper proposes a systematic approach to quantify the uncertainty associated with Rayleigh's damping model. Bayesian calibration with embedded model error is employed to treat the coefficients of the Rayleigh model as random variables using modal damping ratios. Through a numerical example, we illustrate how this approach works and how the calibrated model can address modeling uncertainty associated with the Rayleigh damping model.

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来源期刊
Earthquake Engineering & Structural Dynamics
Earthquake Engineering & Structural Dynamics 工程技术-工程:地质
CiteScore
7.20
自引率
13.30%
发文量
180
审稿时长
4.8 months
期刊介绍: Earthquake Engineering and Structural Dynamics provides a forum for the publication of papers on several aspects of engineering related to earthquakes. The problems in this field, and their solutions, are international in character and require knowledge of several traditional disciplines; the Journal will reflect this. Papers that may be relevant but do not emphasize earthquake engineering and related structural dynamics are not suitable for the Journal. Relevant topics include the following: ground motions for analysis and design geotechnical earthquake engineering probabilistic and deterministic methods of dynamic analysis experimental behaviour of structures seismic protective systems system identification risk assessment seismic code requirements methods for earthquake-resistant design and retrofit of structures.
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