000021725 001__ 21725
000021725 005__ 20170622131301.0
000021725 04107 $$aeng
000021725 046__ $$k2017-06-15
000021725 100__ $$aPellegrini, Daniele
000021725 24500 $$aA NEW NUMERICAL PROCEDURE FOR ASSESSING THE DYNAMIC BEHAVIOUR OF ANCIENT MASONRY TOWERS

000021725 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021725 260__ $$bNational Technical University of Athens, 2017
000021725 506__ $$arestricted
000021725 520__ $$2eng$$aThe paper presents a new numerical procedure for the modal analysis of masonry structures implemented in the finite element code NOSA-ITACA, which models masonry as a nonlinear elastic material with zero tensile strength and infinite or bounded compressive strength. The procedure, which allows for taking into account the effects of the stress field and crack distribution within a structure on its natural frequencies and mode shapes, is applied to assess the dynamic behaviour of a medieval bell tower in Lucca. Data recorded by the monitoring system installed on the tower have been processed via suitable modal identification algorithms, which have enabled calculating the tower’s modal frequencies, mode shapes and damping ratios. Then, the tower has been analysed via the NOSA-ITACA code and model updating techniques applied to fit the data measured on the tower. The results of the standard modal analysis have been compared to those of modal analyses conducted on the structure subjected to its own weight while taking into account the corresponding crack distribution.

000021725 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021725 653__ $$aStructural Health Monitoring, Vibration Response, Masonry Towers, Operational Modal Analysis, Model Updating.

000021725 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021725 720__ $$aPellegrini, Daniele$$iAzzara, Riccardo Maria$$iPadovani, Cristina$$iGirardi, Maria
000021725 8560_ $$ffischerc@itam.cas.cz
000021725 8564_ $$s1889933$$uhttps://invenio.itam.cas.cz/record/21725/files/17652.pdf$$yOriginal version of the author's contribution as presented on CD, section: [RS34] Masonry Structures
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000021725 962__ $$r21500
000021725 980__ $$aPAPER