Discussion on Data Recorded by the Italian Structural Seismic Monitoring Network on Three Masonry Structures Hit by the 2016-2017 Central Italy Earthquake

Cattari, Serena; Abbati, Stefania Degli; Ottonelli, Daria; Marano, Corrado; Camata, Guido; Spacone, Enrico; Porto, Francesca da; Modena, Claudio; Lorenzoni, Filippo; Magenes, Guido; Penna, Andrea; Graziotti, Francesco; Ceravolo, Rosario; Miraglia, Gaetano; Lenticchia, Erica; Fiorini, N.; Spina, Daniele

doi:10.7712/120119.7044.20004

Cited by 24 publications

(62 citation statements)

References 12 publications

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“…Its irregular T-shape floor plan is composed of a main rectangular body (labeled "A" in Figure 1), stretching in the NW-SE direction, and a smaller wing (labeled "B" in Figure 1), orthogonal and attached to the first one. Additional info may be found in [5].…”

Section: Description Of the Buildingmentioning

confidence: 99%

“…This is a network of permanent seismic monitoring systems belonging to the Department of Civil Protection (DPC), installed mostly on public buildings, on some bridges and on a few dams [4]. Within this context, recordings acquired by the OSS on three selected masonry structures have been analyzed during the last years by a team of researchers involved in the ReLUIS project founded by the DPC [5].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Simulation of the Nonlinear Earthquake Response of a Monitored Urm School Building

Graziotti¹,

Toninelli²,

Solenghi³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The seismic sequence that stroke central Italy in August and October 2016 affected a large number of school buildings. One of these was the elementary school of the town of Visso, a 5000-cubic-metre, two-storey stone masonry building. The Italian Structural Seismic Observatory (OSS), a network of permanent sensors mainly installed in public buildings by the Department of Civil Protection, monitored this school. Twenty-three accelerometric channels allowed recording the dynamic response of the building during the entire sequence, which caused the collapse of portions of masonry walls and floor diaphragms. Double-integration of acceleration time histories provided estimations of displacements and deformations, which can be related to different damage states. A detailed geometric and mechanical characterization of the structural system complemented the data provided by the OSS, allowing the development of a reliable equivalent-frame numerical model of the building, implemented in the software Tremuri. The comparison between data recorded on site and nonlinear time-history analysis results confirmed some of the main modelling assumptions typically validated against smaller shake table experiments.

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Section: Description Of the Buildingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of the Nonlinear Earthquake Response of a Monitored Urm School Building

Graziotti¹,

Toninelli²,

Solenghi³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Firstly, the school was part of the public buildings permanently monitored by the Seismic Observatory of Structures (hereafter named OSS). As a result, the entire seismic sequence affecting the school was recorded by the existing system of accelerometers, thus providing valuable information in terms of ground motion and structural seismic performance [4] [5]. Secondly, the inspection and the extensive experimental campaign that were performed in 2010-11 on behalf of the OSS supplied detailed documentation regarding geometry, structural configuration and construction details, and helped with the characterization of material properties [6,7,8].…”

Section: Introductionmentioning

confidence: 99%

“…Dynamic identification tests were also carried out in 2010 to identify the dynamic response of the structure [9]. Finally, such documentation, acquired from the OSS [10], was integrated with the information about geometry, structural configuration, past interventions and seismic damage supplied by the Italian Network of University Laboratories in Seismic Engineering (RELUIS) and the University of Genova, in charge of post-earthquake surveys [11]. In addition, the photographic record of the progressive damage experienced by the building during the entire seismic sequence was provided by the Italian Department of Civil Protection [12].…”

Section: Introductionmentioning

confidence: 99%

Nonlinear modeling of unreinforced masonry structures under seismic actions: validation using a building hit by the 2016 Central Italy earthquake

Ferrero

Lourénço

Calderini

2019

Frattura Ed Integrità Strutturale

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A prolonged seismic sequence struck the regions of Central Italy between August 2016 and January 2017, causing several fatalities and widespread damage to the built environment. The main objective of this work was to study the structural and seismic behavior of "Pietro Capuzi" school, located in Visso, in the Marche region, which was severely damaged by the 2016-2017 Central Italy Earthquake. A 3D finite element (FE) model of the entire school was prepared, adopting a macro-modeling approach to represent masonry materials. An eigenvalue analysis was initially performed in order to identify the dominant modes of vibration of the structure and to calibrate the numerical model according to the results of the dynamic identification tests. Afterwards, nonlinear static analyses were performed on the calibrated FE model to evaluate the seismic response of the structure. Finally, the numerical results obtained in terms of crack pattern and failure mechanisms were compared with the damage experienced by the building. The numerical model proved to accurately predict the seismic response exhibited by the structure during the past seismic events.

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“…This paper reports the research activities on the study of the dynamic behavior and the seismic response of three strategic masonry structures, monitored by the Seismic Observatory of Structures (OSS) of the Italian Department of Civil Protection (DPC). The research activities presented here have been developed in the framework of the ReLUIS project founded by Department of Civil Protection (DPC) in 2017 and 2018 [1][2].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Dynamic Response of Monitored Masonry Buildings After the Central Italy Earthquake Swarm in 2016

Lorenzoni¹,

Lazzarini²,

Calabria³

et al. 2019

Proceedings of the 7th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Dynamic and vibration monitoring can be effectively implemented as a seismic assessment tool in case of an earthquake or natural disaster, where many buildings in a small area may be affected and damaged. In Italy, through the national network of the Seismic Observatory of Structures (OSS), the Department of Civil Protection (DPC) monitors the oscillations caused by earthquakes in 160 constructions of public property. The paper reports the research activities performed on three monitored structures of the OSS, affected by the Central Italy earthquake swarm of 2016 (max Mw=6,5). The three buildings (i.e. a school in Visso -MC, a former law court in Fabriano -AN and the city hall of Pizzoli -AQ) were constructed between 1920 and 1940 and are made of unreinforced masonry, with a good regularity in plan and elevation. Even though they present similar constructive features, the observed seismic-induced damages were largely different: heavy damages, near collapse, for Visso school; slightly damages for Pizzoli Municipality; and almost no damages for the building in Fabriano. The dynamic behavior of the monitored structures was studied through modal analysis techniques both under ambient vibrations and during the earthquake swarm. Data recorded by the monitoring systems are used to assess modal parameters variation and in particular to study the phenomenon of frequency and damping wandering during strong motion. Some severity indexes and dynamic parameters are calculated as well, including peak accelerations, structural amplifications, interstory drifts and elastic spectra. The results of modal identification will be used to assess the reliability of numerical models and their possible development to improve the predictive capacity in estimating the level of safety of existing structures.

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Discussion on Data Recorded by the Italian Structural Seismic Monitoring Network on Three Masonry Structures Hit by the 2016-2017 Central Italy Earthquake

Cited by 24 publications

References 12 publications

Numerical Simulation of the Nonlinear Earthquake Response of a Monitored Urm School Building

Numerical Simulation of the Nonlinear Earthquake Response of a Monitored Urm School Building

Nonlinear modeling of unreinforced masonry structures under seismic actions: validation using a building hit by the 2016 Central Italy earthquake

Assessment of the Dynamic Response of Monitored Masonry Buildings After the Central Italy Earthquake Swarm in 2016

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