A prioritization RVS methodology for the seismic risk assessment of RC school buildings

Ruggieri, Sergio; Perrone, Daniele; Leone, Marianovella; Uva, Giuseppina; Aiello, Maria Antonietta

doi:10.1016/j.ijdrr.2020.101807

Cited by 70 publications

(36 citation statements)

References 35 publications

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“…This observation implies that most of the damaged Italian school buildings can be classified as low-rise buildings (this evidence is also reported in several scientific works, e.g. [25,27]). No particular evidence can be extracted from the inter-storey height parameter: about 85% of the RC school buildings presents values that range from 2.50 m and 3.50 m, while the remaining 15% presents higher values.…”

Section: School Buildings Damaged By Italian Earthquakes: Statistical Analysis On the Specific-class Parameterssupporting

confidence: 74%

“…Specific studies dealing with the seismic vulnerability assessment of relevant building typologies, such as schools [15][16][17], hospitals [18] and ecclesiastic heritage [19][20][21][22] are also available. Among the most common approaches adopted to assess and mitigate seismic risk, it is worthwhile mentioning also mechanical-based approaches [23][24][25], rapid visual screening (RVS) methodologies [26][27] and hybrid methods.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of Post-Earthquake Damages on Italian School Buildings Portfolio Over the Last 50 Years

Ruggieri¹,

Tosto²,

Perrone³

et al. 2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The Italian peninsula has been subjected to several destructive earthquakes over the last 50 years which denoted the high vulnerability of the existing building stock. In this context, the analysis of post-earthquake damages is of paramount importance for manifold reasons, such as the management of the emergency phase for establishing the usability of buildings and the identification of the main sources of vulnerability for future risk mitigation plans. Since about 50 years, the post-earthquake usability of buildings is assessed through simplified forms filled by experts and practitioners during extensive in-situ inspections. The data collected during the post-earthquake inspections have been recently catalogued in the Observed Damage Database (DA.D.O), which is a freely available platform for the scientific community. Starting from the data available in the DA.D.O platform, the damage reported by Italian school buildings have been analyzed in order to elaborate a proper school buildings database. The results of this statistical investigation are used for identifying the main sources of vulnerability characterizing the Italian school buildings and assuming a key role for the empirical calibration of reliable procedures of large-scale seismic risk assessment, mapping and reduction.

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Section: School Buildings Damaged By Italian Earthquakes: Statistical Analysis On the Specific-class Parameterssupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Assessment of Post-Earthquake Damages on Italian School Buildings Portfolio Over the Last 50 Years

Ruggieri¹,

Tosto²,

Perrone³

et al. 2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…The structural response is expressed through the capacity curve, which is a scalar force-displacement relationship usually recorded in terms of base shear (V b ) vs. roof displacement (δ R ), monitored on a control node (CN). To define the safety level of the building under investigation, the capacity curve is compared with the seismic demand according to established approaches, such as the N2 method [8] as applied in [9], without forgetting the absolute validity of the capacity spectrum method, as implemented in [10] and in [11] for irregular buildings.…”

Section: Pushover Analysis: Brief Overview About Conventional and Nonmentioning

confidence: 99%

Accounting for the Spatial Variability of Seismic Motion in the Pushover Analysis of Regular and Irregular RC Buildings in the New Italian Building Code

Ruggieri

Uva

2020

Buildings

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Pushover analysis is the main methodology adopted in practice-oriented applications for investigating the non-linear response of reinforced concrete (RC) buildings; it is applicable for both new and existing buildings. It is well-known that several limitations characterize this methodology and the scientific literature proposes several non-conventional approaches to provide results comparable to those of the more efficient nonlinear dynamic analysis. In most recent seismic guidelines, some improvements have been introduced, in order to overcome the main drawbacks of conventional pushover methods, in view of practice-oriented applications. In particular, new prescriptions are related to the load profiles and the choice of control nodes, aspects that lead to different results in terms of capacity curves and in the safety assessment. Another relevant point is represented by the spatial combination of effects, which suggests the opportunity of executing simultaneous bi-directional pushover analyses. The aim of this paper is to investigate the effects of the new trends followed by some guidelines about pushover analysis, such as the recent 2018 release of the Italian Building Code. In particular, after a general test of the new conventional procedure for the case of RC buildings, a set of case studies has been generated, consisting of three-dimensional RC-archetypes specifically designed and investigated in order to cover the more significant scenarios. The results in terms of global and local performances are processed and critically analyzed, with the aim of appraising the main differences between the traditional and new approaches and identifying the effectiveness and of the actual improvements achieved.

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“…To prioritise the needs of structural strengthening for preserving architectural heritage, their vulnerability should be assessed [29] and, along with risk scenarios, possible losses should be evaluated. In this framework, our aim is a statistical treatment of the vulnerability by generating fragility curves as a fast tool for assessing the seismic capacity of masonry towers.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Dynamic Analysis of Cultural Heritage Towers up to Collapse

Kouris

Konstantinidis

et al. 2021

Buildings

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This paper deals with the seismic vulnerability of monumental unreinforced masonry (URM) towers, the fragility of which has not yet been sufficiently studied. Thus, the present paper fills this gap by developing models to investigate the seismic response of URM towers up to collapse. On mount Athos, Greece, there exist more than a hundred medieval towers, having served mainly as campaniles or fortifications. Eight representative towers were selected for a thorough investigation to estimate their seismic response characteristics. Their history and architectural features are initially discussed and a two-step analysis follows: (i) limit analysis is performed to estimate the collapse mechanism and the locations of critical cracks, (ii) non-linear explicit dynamic analyses are then carried out, developing finite element (FE) simulations, with cracks modelled as interfacial surfaces to derive the capacity curves. A meaningful definition of the damage states is proposed based on the characteristics of their capacity curves, with the ultimate limit state related to collapse. The onset of slight damage-state is characterised by the formation and development of cracks responsible for the collapse mechanism of the structure. Apart from these two, another two additional limit states are also specified: the moderate damage-state and the extensive one. Fragility and vulnerability curves are finally generated which can help the assessment and preservation of cultural heritage URM towers.

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A prioritization RVS methodology for the seismic risk assessment of RC school buildings

Cited by 70 publications

References 35 publications

Assessment of Post-Earthquake Damages on Italian School Buildings Portfolio Over the Last 50 Years

Assessment of Post-Earthquake Damages on Italian School Buildings Portfolio Over the Last 50 Years

Accounting for the Spatial Variability of Seismic Motion in the Pushover Analysis of Regular and Irregular RC Buildings in the New Italian Building Code

Stochastic Dynamic Analysis of Cultural Heritage Towers up to Collapse

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