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

Masi, Angelo; Chiauzzi, Leonardo; Santarsiero, Giuseppe; Manfredi, Vincenzo; Biondi, S; Spacone, Enrico; Gaudio, Carlo Del; Ricci, Paolo; Manfredi, Gaetano; Verderame, Gerardo Mario

doi:10.1007/s10518-017-0277-5

Cited by 90 publications

(36 citation statements)

References 34 publications

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“…For example, the Mw 7.8 Nepal earthquake in 2015 resulted in the destruction of RC structure and local settlements [33,34]. In addition, Mw 6.0 Central Italy earthquake in 2016 caused significant damage to some RC structures and infra facilities [35]. RC structure are also widely used in the pile-supported structure, so studies of pile-supported structure considering the batter pile composed of RC piles will be necessary.…”

Section: Centrifuge Test Results and Discussionmentioning

confidence: 99%

Dynamic Behavior of Pile-Supported Structures with Batter Piles according to the Ground Slope through Centrifuge Model Tests

Yun

Han

2020

Applied Sciences

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Pile-supported structures incorporating batter piles are commonly used, and can be installed both on the horizontal and inclined ground. Recent studies have considered the positive role of batter piles during earthquakes, highlighting their satisfactory contribution to structural seismic performance. However, in these structures, even though the dynamic system responses can vary greatly depending on the ground slope, few previous studies have evaluated the seismic performance of batter piles relative to the ground slope. Therefore, this study evaluates the seismic performance of pile-supported structures with batter piles, relative to the ground slope using dynamic centrifuge model tests. The acceleration, displacement, moment, and axial force of the system were experimentally derived and reviewed, and the pile moment and axial force (M–N) interaction diagrams of the pile cross-sections were analyzed. The installation of the batter piles resulted in a greater reduction in the system response in the inclined-ground model (acceleration: −48%, displacement: −50%, and moment: −84%) compared to that in the horizontal-ground model (acceleration: −27%, displacement: +650%, and moment: −77%). Overall, batter piles showed better seismic performance in the inclined-ground model than in the horizontal-ground model.

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Section: Centrifuge Test Results and Discussionmentioning

confidence: 99%

Dynamic Behavior of Pile-Supported Structures with Batter Piles according to the Ground Slope through Centrifuge Model Tests

Yun

Han

2020

Applied Sciences

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“…In this work, a component-based approach for the definition of repair costs due to earthquake starting from the pushover analysis performed trough the simplified mechanical method POST (([2]- [5])) (PushOver on Shear Type models) is shown. The original POST methodology has already been presented in previous studies for urban-scale seismic vulnerability and fragility assessments, both applied at single building level ([2]- [4], [16]) and at class-oriented level [5]. The main assumption of this methodology is represented by the shear-type behaviour of the analysed building.…”

Section: Description Of the "Post" Methodologymentioning

confidence: 99%

Repair Costs Due to Infills for Rc Buildings After 2009 L’aquila Earthquake

Gaudio¹,

Risi²,

Verderame³

2019

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

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Among natural hazards, earthquakes are certainly paramount due to the lack of possibility to predict their occurrence, and due to their impact on civil structures in terms of social consequences, direct monetary losses, loss in functionality, and risk of casualties. The analysis of damage data in literature highlights the key role played by damage to non-structural components, namely, infills and partitions, in Reinforced Concrete (RC) Moment Resisting Frames (MRF). Therefore, the use of simplified methods leading to the definition of repair costs, fatalties, and repair time due to earthquake, reproducing the influence of infills on the global behaviour of RC frames, is very attractive for insurance and risk management strategies. Among them, recent proposals allow determining damage and losses to individual structural and non-structural components by using fragility and consequence functions. In present work, a simplified mechanical method-PushOver on Shear Type models (POST)for seismic vulnerability assessment of infilled RC buildings is used to determine repair costs of a dataset of lightly damaged residential buildings subjected to the April 6th, 2009 L'Aquila earthquake. To this end, the inter-story drift ratio (IDR) capacity at given damage states (DSs) and the cost functions reported in the most recent literature for infill panels are used to determine repair costs, starting from the nonlinear response history analyses of buildings evaluated according to POST methodology. The considered database is constituted by Moment Resisting Frame (MRF) residential RC buildings located in the Abruzzi region that after the 2009 earthquake have been charged to post-earthquake usability assessment procedure and characterized exclusively by damage to infill panels. In such a way, the evaluation of repair costs can be made by neglecting the contribution due to repair activity to other structural components (namely vertical structures, horizontal structures, stairs, roofs).

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“…On 24 August 2016, a M W 6.0 (at 01:36:32 UTC) earthquake struck an extended region of the Central Apennine, which is one of the most seismically active areas in Italy. This strong earthquake (see red star in Figure 1a) occurred close to the Accumuli village (epicentral distance about 1 km) and the Amatrice towns (epicentral distance 10 km), producing some casualties and strong damage to the buildings (e.g., [30,31]) and historic heritage (e.g., [32]) in many towns around the epicenter. The following seismic sequence produced hundreds of aftershocks per day [33], including a M W 5.4 earthquake on August 24 (at 02:33:34 UTC).…”

Section: Study Area and Datamentioning

confidence: 99%

Shaking Maps Based on Cumulative Absolute Velocity and Arias Intensity: The Cases of the Two Strongest Earthquakes of the 2016–2017 Central Italy Seismic Sequence

Costanzo

2018

IJGI

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By referring to the two strongest earthquakes of the 2016-2017 Central Italy seismic sequence, this paper presents a procedure to make shaking maps through empirical relationships between macroseismic intensity and ground-motion parameters. Hundreds of waveforms were processed to obtain instrumental ground-motion features which could be correlated with the potential damage intensities. To take into account peak value, frequency, duration, and energy content, which all contribute to damage, cumulative absolute velocity and Arias intensity were used to quantify the features of the ground motion. Once these parameters had been calculated at the recording sites, they were interpolated through geostatistical techniques on the whole struck area. Finally, empirical relationships were used for mapping intensities, i.e., potential effects on the built environment. The results referred to both earthquake scenarios that were analyzed and were also used for assessing the influence of the spatial coverage of the instrumental network. In fact, after the first events, the Italian seismic network was subjected to the addition and thickening of sensors in the epicentral area, especially. The results obtained by models only dependent on ground-motion parameters or even on the epicentral distance were compared with the official ShakeMaps and the observed intensities for assessing their reliability. Finally, some suggestions are proposed to improve the procedure that could be used for rapidly assessing ground shaking and mapping damage potential producing useful information for non-expert audience.

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

Cited by 90 publications

References 34 publications

Dynamic Behavior of Pile-Supported Structures with Batter Piles according to the Ground Slope through Centrifuge Model Tests

Dynamic Behavior of Pile-Supported Structures with Batter Piles according to the Ground Slope through Centrifuge Model Tests

Repair Costs Due to Infills for Rc Buildings After 2009 L’aquila Earthquake

Shaking Maps Based on Cumulative Absolute Velocity and Arias Intensity: The Cases of the Two Strongest Earthquakes of the 2016–2017 Central Italy Seismic Sequence

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