000021841 001__ 21841
000021841 005__ 20170622131307.0
000021841 04107 $$aeng
000021841 046__ $$k2017-06-15
000021841 100__ $$aCavalagli, Nicola
000021841 24500 $$aDYNAMIC MONITORING AND NONLINEAR ANALYSIS OF THE DOME OF THE BASILICA OF S.MARIA DEGLI ANGELI IN ASSISI

000021841 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021841 260__ $$bNational Technical University of Athens, 2017
000021841 506__ $$arestricted
000021841 520__ $$2eng$$aDuring the last years, the application of Structural Health Monitoring (SHM) systems to heritage constructions has received a great interest due to the low invasiveness and low-cost of the necessary equipment. When applied to monumental structures and, more in general, to cultural heritage ones, such SHM systems represent an effective solution for preventive conservation against both material degradation and damages derived by natural hazards, such as earthquakes. Among the various technical solutions currently available for SHM, vibration-based systems deserve a special attention, but their application in the context of historical constructions is still quite rare and challenging, with very few documented applications, mostly limiting to masonry towers and bell-towers for their slenderness properties. In this work, the first months of continuous vibration monitoring of the dome of the Basilica of Santa Maria degli Angeli in Assisi are presented. At first, a dynamic identification has been carried out using five high-sensitivity accelerometers, three of them installed at the base of the drum and two at the base of the dome. Then, a fully automated identification technique has been used to extract time series of natural frequencies during the monitoring period. Moreover, some statistical tools have been applied in order to select the best configuration, in terms of number and position of sensors, necessary to obtain a continuous frequency tracking of the first natural modes in view of the use of this information for rapid post-earthquake structural assessment. Moreover, a preliminary investigation about the seismic assessment has been carried by means of a Finite Element (FE) nonlinear dynamic analysis. The damage map obtained by the numerical simulation has been compared with the actual crack scenario present on the structure, giving further information about the structural dynamic response.

000021841 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021841 653__ $$aMasonry dome, Historical construction, Structural health monitoring, FE model

000021841 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021841 720__ $$aCavalagli, Nicola$$iUbertini, Filippo$$iGusella, Vittorio$$iGioffrè, Massimiliano$$iBotticelli, Luca
000021841 8560_ $$ffischerc@itam.cas.cz
000021841 8564_ $$s15114551$$uhttps://invenio.itam.cas.cz/record/21841/files/18117.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS27] Advanced numerical methods for historical masonry monuments preservation in seismic zone
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000021841 962__ $$r21500
000021841 980__ $$aPAPER