Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building
The progressive change of modal characteristics due to accumulated damage on an unreinforced masonry (URM) building is investigated. The stone URM building, submitted to five consecutive shakings, has been experimentally studied on the shaking table of EUCENTRE laboratory (Pavia, Italy). The dynamic...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/2396452 |
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| author | Leonidas Alexandros S. Kouris Andrea Penna Guido Magenes |
| author_facet | Leonidas Alexandros S. Kouris Andrea Penna Guido Magenes |
| author_sort | Leonidas Alexandros S. Kouris |
| collection | DOAJ |
| description | The progressive change of modal characteristics due to accumulated damage on an unreinforced masonry (URM) building is investigated. The stone URM building, submitted to five consecutive shakings, has been experimentally studied on the shaking table of EUCENTRE laboratory (Pavia, Italy). The dynamic characteristics of the test specimen are analytically estimated using frequency and state-space modal identification from ambient vibration stationary tests carried out before the strong motion transient tests at various levels of damage. A singular value (SV) decomposition of the cross-correlation matrix of the acceleration response in the frequency domain is applied to determine the modal characteristics. In the time domain, the subspace state-space system identification is performed. Modal characteristics evolve from the initial linear state up to the ultimate collapse state in correlation with accumulated damage. Modal frequencies shorten with increasing intensity, whereas modal damping ratios are enhanced. Modal shapes also change with increasing level of accumulated damage. Comparing the evolution of modal characteristics, it is concluded that modal damping ratio shift can be better correlated with the system’s actual performance giving a better representation of damage than that of natural frequency shift ratio or the modes difference. |
| format | Article |
| id | doaj-art-4f4bcd9bd1b541b191ad15282e0f4067 |
| institution | DOAJ |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-4f4bcd9bd1b541b191ad15282e0f40672025-08-20T03:20:19ZengWileyAdvances in Civil Engineering1687-80861687-80942019-01-01201910.1155/2019/23964522396452Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry BuildingLeonidas Alexandros S. Kouris0Andrea Penna1Guido Magenes2Institute for Advanced Studies, IUSS Pavia, P.za Della Vittoria 15, 27100 Pavia, ItalyEuropean Centre for Training and Research in Earthquake Engineering, V. Ferrata 1, 27100 Pavia, ItalyEuropean Centre for Training and Research in Earthquake Engineering, V. Ferrata 1, 27100 Pavia, ItalyThe progressive change of modal characteristics due to accumulated damage on an unreinforced masonry (URM) building is investigated. The stone URM building, submitted to five consecutive shakings, has been experimentally studied on the shaking table of EUCENTRE laboratory (Pavia, Italy). The dynamic characteristics of the test specimen are analytically estimated using frequency and state-space modal identification from ambient vibration stationary tests carried out before the strong motion transient tests at various levels of damage. A singular value (SV) decomposition of the cross-correlation matrix of the acceleration response in the frequency domain is applied to determine the modal characteristics. In the time domain, the subspace state-space system identification is performed. Modal characteristics evolve from the initial linear state up to the ultimate collapse state in correlation with accumulated damage. Modal frequencies shorten with increasing intensity, whereas modal damping ratios are enhanced. Modal shapes also change with increasing level of accumulated damage. Comparing the evolution of modal characteristics, it is concluded that modal damping ratio shift can be better correlated with the system’s actual performance giving a better representation of damage than that of natural frequency shift ratio or the modes difference.http://dx.doi.org/10.1155/2019/2396452 |
| spellingShingle | Leonidas Alexandros S. Kouris Andrea Penna Guido Magenes Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building Advances in Civil Engineering |
| title | Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building |
| title_full | Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building |
| title_fullStr | Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building |
| title_full_unstemmed | Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building |
| title_short | Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building |
| title_sort | dynamic modification and damage propagation of a two storey full scale masonry building |
| url | http://dx.doi.org/10.1155/2019/2396452 |
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