Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building
Joint Authors
Kouris, Leonidas Alexandros S.
Penna, Andrea
Magenes, Guido
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-21, 21 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-06-02
Country of Publication
Egypt
No. of Pages
21
Main Subjects
Abstract EN
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.
American Psychological Association (APA)
Kouris, Leonidas Alexandros S.& Penna, Andrea& Magenes, Guido. 2019. Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building. Advances in Civil Engineering،Vol. 2019, no. 2019, pp.1-21.
https://search.emarefa.net/detail/BIM-1115758
Modern Language Association (MLA)
Kouris, Leonidas Alexandros S.…[et al.]. Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building. Advances in Civil Engineering No. 2019 (2019), pp.1-21.
https://search.emarefa.net/detail/BIM-1115758
American Medical Association (AMA)
Kouris, Leonidas Alexandros S.& Penna, Andrea& Magenes, Guido. Dynamic Modification and Damage Propagation of a Two-Storey Full-Scale Masonry Building. Advances in Civil Engineering. 2019. Vol. 2019, no. 2019, pp.1-21.
https://search.emarefa.net/detail/BIM-1115758
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1115758