Seismic response of RC buildings during the Mw 6.0 August 24, 2016 Central Italy earthquake: the Amatrice case study

2017 ◽  
Vol 17 (10) ◽  
pp. 5631-5654 ◽  
Author(s):  
A. Masi ◽  
L. Chiauzzi ◽  
G. Santarsiero ◽  
V. Manfredi ◽  
S. Biondi ◽  
...  
Keyword(s):  
Seismic Response ◽  
Central Italy ◽  
Rc Buildings ◽  
Central Italy Earthquake

Site effects and damage scenarios: The case study of two historic centers following the 2016 Central Italy earthquake

2020 ◽  
Vol 272 ◽  
pp. 105647 ◽  
Author(s):  
Giuseppe Brando ◽  
Alessandro Pagliaroli ◽  
Giulia Cocco ◽  
Francesco Di Buccio
Keyword(s):  
Site Effects ◽  
Central Italy ◽  
Damage Scenarios ◽  
Central Italy Earthquake

Understanding the interacting factors that influence social vulnerability: a case study of the 2016 central Italy earthquake

Disasters ◽  
2019 ◽  
Vol 43 (4) ◽  
pp. 867-890 ◽  
Author(s):  
Ivan Frigerio ◽  
Francesca Zanini ◽  
Matteo Mattavelli ◽  
Mattia De Amicis
Keyword(s):  
Social Vulnerability ◽  
Central Italy ◽  
Central Italy Earthquake

scholarly journals A NOVEL SEISMIC VULNERABILITY ASSESSMENT OF MASONRY FAÇADES: FRAMING AND VALIDATION ON CALDAROLA CASE STUDY AFTER 2016 CENTRAL ITALY EARTHQUAKE

Rivista Tema ◽  
2021 ◽  
Vol 7 (N.2 (2021)) ◽  
Author(s):  
Keyword(s):  
Vulnerability Assessment ◽  
Kinematic Analysis ◽  
Seismic Vulnerability ◽  
Central Italy ◽  
Vulnerability Index ◽  
Assessment Method ◽  
Damage State ◽  
Central Italy Earthquake ◽  
Observed Damage

An important portion of the historical built environment, which is characterized by un-reinforced masonry, is particularly vulnerable to collapse in case of earthquakes, as demonstrated by recent events. Strategies to target the facades of the most vulnerable buildings need to be tailored for retrofitting and emergency planning. In this research, a novel expeditious vulnerability assessment method, particularly suitable for historical masonry aggregates, is proposed. The method allows assessing the vulnerability index based on information available from external surveys on the building, thus facilitating and speeding up the investigation. If other more precise information (e.g., curbs and tie rods effectiveness) is available, the vulnerability estimation can be improved. The method focuses on out-of-plane mechanisms of the facade, which cause debris to fall on adjacent streets, impeding emergency response. The expeditious method is tailored starting from analytical methods applied on a large sample of historical buildings hit by earthquakes, and validated by means of comparison with kinematic analysis and observed damage state on a relevant case study, Caldarola (Macerata, Central Italy, which was struck by the earthquake in 2016). Results show a good agreement between the proposed method, the kinematic analysis, and the observed damage state of the considered case study, with 75% and 87.5% correspondence, and the method is especially precise for evaluating highly damaged facades.

scholarly journals Numerical simulation of the seismic response and soil–structure interaction for a monitored masonry school building damaged by the 2016 Central Italy earthquake

2020 ◽  
Author(s):  
A. Brunelli ◽  
F. de Silva ◽  
A. Piro ◽  
F. Parisi ◽  
S. Sica ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Seismic Response ◽  
Soil Structure ◽  
Ambient Noise ◽  
Central Italy ◽  
Soil Structure Interaction ◽  
Masonry Building ◽  
School Building ◽  
Structure Interaction ◽  
Central Italy Earthquake

AbstractDespite significant research advances on the seismic response analysis, there is still an urgent need for validation of numerical simulation methods for prediction of earthquake response and damage. In this respect, seismic monitoring networks and proper modelling can further support validation studies, allowing more realistic simulations of what earthquakes can produce. This paper discusses the seismic response of the “Pietro Capuzi” school in Visso, a village located in the Marche region (Italy) that was severely damaged by the 2016–2017 Central Italy earthquake sequence. The school was a two-story masonry structure founded on simple enlargements of its load-bearing walls, partially embedded in the alluvial loose soils of the Nera river. The structure was monitored as a strategic building by the Italian Seismic Observatory of Structures (OSS), which provided acceleration records under both ambient noise and the three mainshocks of the seismic sequence. The evolution of the damage pattern following each one of the three mainshocks was provided by on-site survey integrated by OSS data. Data on the dynamic soil properties was available from the seismic microzonation study of the Visso village and proved useful in the development of a reliable geotechnical model of the subsoil. The equivalent frame (EF) approach was adopted to simulate the nonlinear response of the school building through both fixed-base and compliant-base models, to assess the likely influence of soil–structure interaction on the building performance. The ambient noise records allowed for an accurate calibration of the soil–structure model. The seismic response of the masonry building to the whole sequence of the three mainshocks was then simulated by nonlinear time history analyses by using the horizontal accelerations recorded at the underground floor as input motions. Numerical results are validated against the evidence on structural response in terms of both incremental damage and global shear force–displacement relationships. The comparisons are satisfactory, corroborating the reliability of the compliant-base approach as applied to the EF model and its computational efficiency to simulate the soil–foundation–structure interaction in the case of masonry buildings.

scholarly journals On the reliability of the equivalent frame models: the case study of the permanently monitored Pizzoli’s town hall

2021 ◽  
Author(s):  
Stefania Degli Abbati ◽  
Paolo Morandi ◽  
Serena Cattari ◽  
Enrico Spacone
Keyword(s):  
Central Italy ◽  
Ambient Vibration ◽  
Second Phase ◽  
Masonry Building ◽  
Town Hall ◽  
Central Italy Earthquake ◽  
Ambient Vibration Tests ◽  
Equivalent Frame ◽  
Comparison Of The Results

AbstractThis paper presents the comparison of the results of modal and nonlinear analyses carried out on a 2-story masonry building with rigid diaphragms, inspired by the Pizzoli’s town hall (AQ, Italy). The case study is one of the Benchmark Structures (labeled BS6) in the “URM nonlinear modelling–Benchmark project” funded by the Italian Department of Civil Protection (DPC) within the framework of the ReLUIS projects. The building has been instrumented since 2009 with a permanent monitoring system by the Osservatorio Sismico delle Strutture (OSS) of the DPC and was hit by the 2016/2017 Central Italy earthquake sequence. In the research first phase, modal and nonlinear static analyses were carried out in a blind prediction, without any preliminary calibration of the models, but referring only to commonly made assumptions on materials and modelling. Five computer programs based on the Equivalent Frame Model (EFM) approach were used. Four different structural configurations were considered: with weak spandrels (A), with tie rods coupled to spandrels (B), with RC ring beams coupled to spandrels (C) and with “shear type” idealization (D). In the research second phase, two of the developed EFMs were calibrated in the elastic range using the results of available Ambient Vibration Tests (AVTs). The models were then validated in the nonlinear range by simulating the dynamic response of the structure recorded during the mainshocks of the 2016/2017 Central Italy earthquake. Recorded and numerical results were compared at both the global and local scale.

scholarly journals Investigation of topographic site effects using 3D waveform modelling: amplification, polarization and torsional motions in the case study of Arquata del Tronto (Italy)

2021 ◽  
Author(s):  
Julie Baron ◽  
Ilaria Primofiore ◽  
Peter Klin ◽  
Giovanna Vessia ◽  
Giovanna Laurenzano
Keyword(s):  
Numerical Simulations ◽  
Seismic Response ◽  
Ground Motion ◽  
Frequency Band ◽  
Site Response ◽  
Central Italy ◽  
Surface Model ◽  
Torsional Motion ◽  
Near Surface

AbstractThe combined effect of topography and near-surface heterogeneities on the seismic response is hardly predictable and may lead to an aggravation of the ground motion. We apply physics-based numerical simulations of 3D seismic wave propagation to highlight these effects in the case study of Arquata del Tronto, a municipality in the Apennines that includes a historical village on a hill and a hamlet on the flat terrain of an alluvial basin. The two hamlets suffered different damage during the 2016 seismic sequence in Central Italy. We analyze the linear visco-elastic seismic response for vertically incident plane waves in terms of spectral amplification, polarization and induced torsional motion within the frequency band 1–8 Hz over a 1 km2 square area, with spatial resolution 25 m. To discern the effects of topography from those of the sub-surface structure we iterate the numerical simulations for three different versions of the sub-surface model: one homogeneous, one with a surficial weathering layer and a soil basin and one with a complex internal setting. The numerical results confirm the correlation between topographic curvature and amplification and support a correlation between the induced torsional motion and the topographic slope. On the other hand we find that polarization does not necessarily imply ground motion amplification. In the frequency band above 4 Hz the topography-related effects are mainly aggravated by the presence of the weathering layer, even though they do not exceed the soil-related effects in the flat-topography basin. The geological setting below the weathering layer plays a recognizable role in the topography-related site response only for frequencies below 4 Hz.

Sign in / Sign up

Export Citation Format

Share Document