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Article

Structural Operativity Evaluation of Strategic Buildings through Finite Element (FE) Models Validated by Operational Modal Analysis (OMA)

1
Dipartimento di Scienze dell’Ingegneria Civile e dell’Architettura, Politecnico di Bari, 70126 Bari, Italy
2
Dipartimento di Ingegneria dell’Innovazione, Università del Salento, 73100 Lecce, Italy
3
Consiglio Nazionale delle Ricerche–Istituto di Geologia Ambientale e Geoingegneria, 00015 Roma, Italy
*
Authors to whom correspondence should be addressed.
Sensors 2020, 20(11), 3252; https://doi.org/10.3390/s20113252
Received: 11 May 2020 / Revised: 5 June 2020 / Accepted: 5 June 2020 / Published: 7 June 2020
(This article belongs to the Special Issue Sensors for Nondestructive Testing and Evaluation)
In this paper, a non-destructive technique based on the monitoring of the environmental vibrations of two strategic buildings by positioning accelerometers in well-defined points was used for fixing their dynamic behavior. The accelerometers measurements were elaborated through Operational Modal Analysis (OMA) techniques, in order to identify natural frequencies, damping coefficients, and modal shapes of the structure. Once these parameters have been determined, a numerical model calibrated on the identified frequencies and verified on the corresponding mode shapes was created for each building. The structural operational efficiency index of the buildings was determined by using the Seismic Model Ambient Vibration (SMAV) methodology, which allows us to evaluate their seismic vulnerability. The results obtained from the experimental analysis (on three different tests for each analyzed building) concern the frequencies and the modal shapes of the structure. They have been compared to the results of the finite element model, with a very small error, indicating a good quality of the analysis and also the possibility of using directly well-tuned models for verifying the structural operating indices. View Full-Text
Keywords: nondestructive techniques; operational modal analysis; ambient vibrations; FE model; structural operativity nondestructive techniques; operational modal analysis; ambient vibrations; FE model; structural operativity
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MDPI and ACS Style

Foti, D.; Giannoccaro, N.I.; Vacca, V.; Lerna, M. Structural Operativity Evaluation of Strategic Buildings through Finite Element (FE) Models Validated by Operational Modal Analysis (OMA). Sensors 2020, 20, 3252. https://doi.org/10.3390/s20113252

AMA Style

Foti D, Giannoccaro NI, Vacca V, Lerna M. Structural Operativity Evaluation of Strategic Buildings through Finite Element (FE) Models Validated by Operational Modal Analysis (OMA). Sensors. 2020; 20(11):3252. https://doi.org/10.3390/s20113252

Chicago/Turabian Style

Foti, Dora, Nicola I. Giannoccaro, Vitantonio Vacca, and Michela Lerna. 2020. "Structural Operativity Evaluation of Strategic Buildings through Finite Element (FE) Models Validated by Operational Modal Analysis (OMA)" Sensors 20, no. 11: 3252. https://doi.org/10.3390/s20113252

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