Monitoring historical masonry structures with operational modal analysis: Two case studies

被引：321

作者：

Ramos, L. F. ^{[1
]}

Marques, L. ^{[1
]}

Lourenco, P. B. ^{[1
]}

De Roeck, G. ^{[2
]}

Campos-Costa, A.

Roque, J. ^{[3
]}

机构：

[1] Univ Minho, Dept Civil Engn, ISISE, P-4800058 Guimaraes, Portugal

[2] Catholic Univ Leuven, Dept Civil Engn, Louvain, Belgium

[3] Polytech Inst, Braganca, Brazil

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2010年 / 24卷 / 05期

关键词：

Damage identification; Experimental testing; Modal analysis; Masonry structures; DAMAGE;

D O I：

10.1016/j.ymssp.2010.01.011

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The paper addresses two complex case studies of modal and structural identification of monuments in Portugal: the Clock Tower of Mogadouro and the Church of Jeronimos Monastery, in Lisbon. These are being monitored by University of Minho with vibration, temperature and relative air humidity sensors. Operational modal analysis is being used to estimate the modal parameters, followed by statistical analysis to evaluate the environmental effects on the dynamic response. The aim is to explore damage assessment in masonry structures at an early stage by vibration signatures, as a part of a health monitoring process that helps in the preservation of historical constructions. The paper presents the necessary preliminary dynamic analysis steps before the monitoring task, which includes installation of the monitoring system, system identification and subsequent FE model updating analysis, automatic modal identification and investigation of the influence of the environment on the identified modal parameters. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1291 / 1305

页数：15

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