000021782 001__ 21782
000021782 005__ 20170622131304.0
000021782 04107 $$aeng
000021782 046__ $$k2017-06-15
000021782 100__ $$aAbbati, Stefania Degli
000021782 24500 $$aSEISMIC ASSESSMENT OF COMPLEX ASSETS THROUGH NONLINEAR STATIC ANALYSES: THE FORTRESS IN SAN FELICE SUL PANARO HIT BY THE 2012 EARTHQUAKE IN ITALY
000021782 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021782 260__ $$bNational Technical University of Athens, 2017
000021782 506__ $$arestricted
000021782 520__ $$2eng$$aThis paper proposes a procedure for the seismic assessment of unreinforced masonry complex structures together with a first application to the case of fortresses. The proposal of such procedure arises from different reasons: firstly, Standards suggest procedures mainly addressed to ordinary structures; furthermore, even those Recommendations, which are more specifically addressed to monumental assets, state only general principles, without specifying operational targeted‐procedure for their seismic assessment. The dam-age occurred after past earthquakes, and in particular the one hit the Emilia region in Italy, highlighted that fortresses are characterized by an aggregation of bodies with an own seismic behavior which, however, is strongly affected by their dynamic interaction due to the mutual boundary conditions. Hence, the adoption of a numerical three-dimensional model of the whole structure is necessary to take into account explicitly the effect of such interactions. The proposed procedure requires the execution of a modal analysis of the whole structure in order to define the modes involving the dynamic response of each units and their modal shapes. Then, fitting the modal shapes, proper load patterns are defined to pass to the execution of pushover analyses. In particular, one load pattern is applied for each unit but considering the whole numerical model. The pushover curve of each unit is then converted in the capacity curve to finalize the seismic assessment and verification. The proposed procedure is applied in the paper to the case‐study of San Felice sul Panaro fortress, significantly hit by the Emilia earthquake, 2012 allowing the comparison between the occurred damage and the one simulated by the nonlinear static analyses and to validate the procedure. The potentialities of the proposed procedure seem relevant in order to provide a reliable seismic assessment also of other typology of complex structures.
000021782 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021782 653__ $$aFortresses, Seismic assessment, Nonlinear Static Analyses, Emilia earthquake.
000021782 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021782 720__ $$aAbbati, Stefania Degli$$iLagomarsino, Sergio$$iMiranda, Stefano De$$iCattari, Serena$$iCastellazzi, Giovanni$$iOttonelli, Daria$$iD'Altri, Antonio Maria
000021782 8560_ $$ffischerc@itam.cas.cz
000021782 8564_ $$s5305085$$uhttps://invenio.itam.cas.cz/record/21782/files/17917.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS25] Computational Strategies for the seismic assessment of Cultural Heritage Masonry Structures
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000021782 962__ $$r21500
000021782 980__ $$aPAPER