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A platform for research: civil engineering, architecture and urbanism
Damage identification applied to reinforced masonry structures
In the framework of the DISWall research project, funded by the European Commission, innovative construction systems for reinforced masonry walls were developed. One of these systems was aimed at building tall load bearing walls for single-story constructions, such as commercial and industrial buildings. In this case, the roof often does not constitute a rigid diaphragm capable of redistributing the seismic action on the in-plane walls. To study this condition, two real scale prototypes were tested under cyclic out-of-plane loading. To assess the reliability of dynamic identification techniques, applied for the detection of boundary conditions, structural properties, and damage, dynamic tests (ambient vibration) were carried out before and during the execution of cyclic out-of-plane tests. The results obtained showed that dynamic tests allowed identifying the global modal parameters of the structures, with varying boundary conditions and in undamaged and damaged conditions. In particular, dynamic identification allowed detecting different boundary conditions and calibrating the main parameters for modelling the structural behaviour. Damage identification gave very good results, consistent with the test phases and the experimental observations, and allowed defining some ranges of frequency decrease that can be related to increasing damage conditions. On the contrary, damping coefficient estimated by ambient vibration tests was less sensitive for damage identification.
Damage identification applied to reinforced masonry structures
In the framework of the DISWall research project, funded by the European Commission, innovative construction systems for reinforced masonry walls were developed. One of these systems was aimed at building tall load bearing walls for single-story constructions, such as commercial and industrial buildings. In this case, the roof often does not constitute a rigid diaphragm capable of redistributing the seismic action on the in-plane walls. To study this condition, two real scale prototypes were tested under cyclic out-of-plane loading. To assess the reliability of dynamic identification techniques, applied for the detection of boundary conditions, structural properties, and damage, dynamic tests (ambient vibration) were carried out before and during the execution of cyclic out-of-plane tests. The results obtained showed that dynamic tests allowed identifying the global modal parameters of the structures, with varying boundary conditions and in undamaged and damaged conditions. In particular, dynamic identification allowed detecting different boundary conditions and calibrating the main parameters for modelling the structural behaviour. Damage identification gave very good results, consistent with the test phases and the experimental observations, and allowed defining some ranges of frequency decrease that can be related to increasing damage conditions. On the contrary, damping coefficient estimated by ambient vibration tests was less sensitive for damage identification.
Damage identification applied to reinforced masonry structures
Schadensidentifizierung angewandt auf armierte Mauerwerksstrukturen
Mosele, Flavio (author) / Da Porto, Francesca (author) / Modena, Claudio (author)
2009
6 Seiten, 5 Bilder, 2 Tabellen, 10 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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