000021590 001__ 21590
000021590 005__ 20170622131253.0
000021590 04107 $$aeng
000021590 046__ $$k2017-06-15
000021590 100__ $$aForghieri, Marianna
000021590 24500 $$aDYNAMIC BEHAVIOUR OF THE SAN FELICE SUL PANARO FORTRESS: EXPERIMENTAL TESTS AND MODEL UPDATING

000021590 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021590 260__ $$bNational Technical University of Athens, 2017
000021590 506__ $$arestricted
000021590 520__ $$2eng$$aThis paper describes the experimental tests and numerical analyses performed to characterize the dynamic behaviour of the principal tower of the San Felice sul Panaro Fortress (Modena, Italy). After the Emilia earthquake that occurred in 2012, the Fortress reported serious damage, such as severe cracks on the walls and collapses of several towers and the roof. As a part of a research that aims at evaluating the vulnerability of the Fortress and designing retrofitting interventions, full-scale ambient vibration tests were performed to evaluate the dynamic properties of the principal tower. Afterwards, a Finite Element (FE) model is calibrated to obtain a good match between the numerical and experimental modal properties. The optimization process is carried out through an improved surrogate-assisted evolutionary strategy. Due to the serious damage of the Fortress, the effective stiffness of the cracked masonry and the efficiency of connection at the interface between the principal tower and the rest of the Fortress are considered the main uncertain quantities to be calibrated. A multi-objective optimization is performed, considering the frequency and mode shape residuals. These are defined as the difference between experimental and numerical modal properties. The multi-objective optimization is reduced to a series of a single-objective optimization adopting the weighted sum method. The set of optimal solutions that form the Pareto front is obtained performing the optimization for different values of the weighting factors. Then, two criteria are used and compared in order to find the preferred solution among the Pareto front solutions. Finally, a comparison of the identified structural parameters obtained varying the weighting factors for natural frequencies and mode shapes in the optimization process is presented, highlighting the importance of a proper choice of the weighting factors.

000021590 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021590 653__ $$aHistorical masonry structures, Ambient vibration testing, Dynamic identification, Model updating, Surrogate-assisted evolutionary algorithm.

000021590 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021590 720__ $$aForghieri, Marianna$$iVincenzi, Loris$$iBassoli, Elisa
000021590 8560_ $$ffischerc@itam.cas.cz
000021590 8564_ $$s8695044$$uhttps://invenio.itam.cas.cz/record/21590/files/17156.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS25] Computational Strategies for the seismic assessment of Cultural Heritage Masonry Structures
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000021590 962__ $$r21500
000021590 980__ $$aPAPER