Operational modal analysis and finite element model correlation of the Braga Stadium suspended roof

被引：49

作者：

Magalhaes, Filipe ^{[1
]}

Caetano, Elsa ^{[1
]}

Cunha, Alvaro ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, Dept Civil Engn, P-4200465 Oporto, Portugal

来源：

ENGINEERING STRUCTURES | 2008年 / 30卷 / 06期

关键词：

suspended roof; ambient vibration test; free vibration tests; output-only modal identification; finite element model correlation;

D O I：

10.1016/j.engstruct.2007.11.010

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The paper presents the most relevant results obtained from the application of different output-only modal identification methods to data collected in dynamic tests of the new Braga Sports Stadium suspended roof and the subsequent finite element model correlation analysis. This experimental work allowed the validation of the numerical modelling of the suspended roof, which takes into account the geometric non-linear structural behaviour and the progressive application of loads during the construction phase. Particular attention was given to identification of modal damping ratios, due to the necessity of analysing the susceptibility of the suspended roof to buffeting effects. Modal damping ratios were estimated from data provided by free, forced and ambient vibration tests, using ail improved implementation of the Enhanced Frequency Domain Method and the Stochastic Subspace Identification Methods: SSI-DATA and SSI-COV. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1688 / 1698

页数：11

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