Remarks on damage and response of school buildings after the Central Italy earthquake sequence

Ludovico, Marco Di; Digrisolo, Andrea; Moroni, Claudio; Graziotti, Francesco; Manfredi, Vincenzo; Prota, Andrea; Dolce, Mauro; Manfredi, Gaetano

doi:10.1007/s10518-018-0332-x

Cited by 47 publications

(27 citation statements)

References 12 publications

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“…These two properties are directly related each other. In fact, similarly to what found for school buildings in the post-earthquake emergency of Central Italy (2016) [1], the rapidity of intervention for public buildings (especially schools and hospitals) is a crucial issue of the recovery phase after a seismic event. Intervening only from outside saves most of the non-structural components, whose demolition and reconstruction implies high costs and take usually more time than the structural interventions works.…”

Section: Design Of Seismic Interventionsupporting

confidence: 52%

“…New structural members are assumed to be made of concrete of class C28/35 and reinforcing steel of class B450C according to the Italian seismic code [1]. Column members have cross-section 500x700 mm while beams 400x600 mm.…”

Section: Design Of Seismic Interventionmentioning

confidence: 99%

“…Unfortunately, even in recent years, health facilities as well as other strategic and sensible buildings (e.g. schools, [1]), demonstrated their high vulnerability to earthquakes, showing huge earthquake-induced losses estimated along with the loss of functionality. Surveys carried out in the aftermath of recent medium-to-high magnitude earthquakes have clearly shown the poor seismic performance of existing hospital buildings, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Post-Earthquake Rehabilitation of Healthcare Buildings: The Case Study of the Mirandola Hospital

Ventura¹,

Santarsiero²,

Masi³

et al. 2019

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

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Recent earthquakes in Italy and other countries have shown the fragility of hospital complexes which resulted in many cases unusable due to structural and non-structural damage. Depending on the extent of damage, unusable hospitals were reopened after some weeks/months, or affected by long rehabilitation intervention or demolished. In order to allow for a prompt resumption of the social activities of the local communities, the usability evaluation carried out in the immediate aftermath of a seismic event is a crucial step to address the short-term countermeasures and to obtain a gross estimate of the economic losses. After the first weeks, it is often necessary a more detailed assessment which allows for a more accurate evaluation of damage and, more importantly, about the reparability of the structure along with the study of feasible intervention strategies. This latter activity needs detailed analyses based on increased knowledge of the structure. Keeping in mind the objectives of detailed postearthquake assessment and reparability evaluations, the Santa Maria Bianca hospital of Mirandola, damaged by the Emilia 2012 earthquake, has been analyzed as a case study. Analyses were devoted to defining an upgrading strategy to match the code serviceability limit states (damage limitation and occupancy). The selected strategy included solutions to carry out most of the work from outside, to limit the downtime of the building as well as reconstruction of demolished non-structural elements. Further analyses were made in order to check the effects of the upgrading strategy under the seismic actions recorded during the 2012 Emilia earthquake. These analyses highlighted that even the upgraded hospital building could not be able to remain operational after a new seismic event having the same intensity as the 2012 event, underlining the need of more stringent design criteria for strategic structures like hospitals that are requested to provide healthcare services even more when strong earthquakes occur.

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Section: Design Of Seismic Interventionsupporting

confidence: 52%

Section: Design Of Seismic Interventionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Post-Earthquake Rehabilitation of Healthcare Buildings: The Case Study of the Mirandola Hospital

Ventura¹,

Santarsiero²,

Masi³

et al. 2019

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

View full text Add to dashboard Cite

show abstract

“…Among the inspected schools, 68% of those that experienced a PGA lower than 0.1 g were safe to be accessed. This number reduces down to 14% for buildings exposed to PGA greater than 0.30 g [6]. The elementary school of the town of Visso, a 5000cubic-metre, two-story stone masonry building is one of the latter.…”

Section: Introductionmentioning

confidence: 98%

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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“…The collapse of a school building during the 2002 Molise Earthquake (Italy), killing many students and a teacher [1], where the site effects also seem to have played an important role in the damage [2], is a good example of the importance of an accurate seismic risk assessment of existing school buildings in order to identify the most problematic cases, namely for retrofitting purposes. More recently, many Italian school buildings were also damaged after the 2016 Central Italy earthquake sequence [3], highlighting this issue. In this context, it is important to develop seismic assessment methods to carry out these types of studies at a large scale, while considering the specific characteristics of each building, and trying to increase the precision of results.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Computational Approach for Seismic Risk Assessment of Individual Buildings

Estêvão

2019

Applied Sciences

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The simultaneous assessment of a great number of buildings subjected to different ground motions is a very challenging task. For this reason, a new computational integrated approach for seismic assessment of individual buildings is presented, which consists of several independent computer objects, each having its own user interface, yet being totally interconnectable like in a puzzle. The hazard module allows considering a code-based response spectrum or a predicted response spectrum for a given earthquake scenario, which is computed throughout the resolution of an optimization problem. The vulnerability of each building is assessed based on structural capacity curves. Damage is evaluated using an innovative proposal, which is to use what was called a performance curve associated with a capacity curve. This curve reproduces the percentage of a given response spectrum corresponding to a performance point for each displacement value of a capacity curve. Therefore, it becomes possible to do a very fast association of any limit state to a percentage of a seismic action. This approach was implemented in the PERSISTAH software, and the result outputs can be exported, instantaneously, to the Google Earth software throughout the creation of a kml file, or to MS Excel.

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Remarks on damage and response of school buildings after the Central Italy earthquake sequence

Cited by 47 publications

References 12 publications

Post-Earthquake Rehabilitation of Healthcare Buildings: The Case Study of the Mirandola Hospital

Post-Earthquake Rehabilitation of Healthcare Buildings: The Case Study of the Mirandola Hospital

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

An Integrated Computational Approach for Seismic Risk Assessment of Individual Buildings

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