2016–2017 Central Italy Earthquake Sequence: Seismic Retrofit Policy and Effectiveness

Mazzoni, Silvia; Castori, Giulio; Galasso, Carmine; Calvi, Paolo M.; Dreyer, Richard F.; Fischer, Erica C.; Fulco, Alessandro; Sorrentino, Luigi; Wilson, Jay; Penna, Andrea; Magenes, Guido

doi:10.1193/100717eqs197m

Cited by 43 publications

(40 citation statements)

References 5 publications

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“…FEMA, 2015b), framed in multilevel frameworks (e.g. Moratti et al, 2019), represent essential tools to prioritise further detailed analyses and any DRR and/or resilience-enhancing intervention. Such simplified methods should allow an analyst to also account for the intangible value of CH assets and to consider their specific construction features by just using a small amount of information -to be typically collected in highly complex urban settings, such as in developing countries.…”

Section: Introduction and Motivationsmentioning

confidence: 99%

A multi-hazard risk prioritisation framework for cultural heritage assets

Sevieri

Galasso

D’Ayala

et al. 2020

Nat. Hazards Earth Syst. Sci.

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Abstract. Multi-hazard risk assessment of building portfolios is of primary importance in natural-hazard-prone regions, particularly for the prioritisation of disaster risk reduction and resilience-enhancing strategies. In this context, cultural heritage assets require special consideration because of their high vulnerability to natural hazards – due to ageing and types of construction – and their strong links with communities from both an economic and a historical–sociocultural perspective. This paper introduces a multi-hazard risk prioritisation framework specifically developed for cultural heritage assets. The proposed framework relies on a multilevel rapid-visual-survey (RVS) form for the multi-hazard exposure data collection and risk prioritisation of case-study assets. Because of the multilevel architecture of the proposed RVS form, based on three levels of refinement and information, an increasing degree of accuracy can be achieved in the estimation of structural vulnerability and, ultimately, structural risk of the considered assets. At the lowest level of refinement, the collected data are used for the computation of seismic-risk and wind-risk prioritisation indices, specifically calibrated in this study for cultural heritage assets with various structural and non-structural features. The resulting indices are then combined into a unique multi-hazard risk prioritisation index in which the intangible value of cultural heritage assets is also considered. This is achieved by defining a score expressing the cultural significance of the asset. The analytic hierarchy process is extensively used throughout the study to reduce the subjectivity involved in the framework, thus obtaining a simplified yet robust approach which can be adapted to different building typologies. The proposed framework is applied to 25 heritage buildings in Iloilo City, Philippines, for which innovative, non-invasive techniques and tools for improved surveying have also been tested. Thermal and omnidirectional cameras have helped in the collection of structural data, together with drones for the inspection of roofs. Results of the study are presented and critically discussed, highlighting advantages and drawbacks of the use of new technologies in this field.

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Section: Introduction and Motivationsmentioning

confidence: 99%

A multi-hazard risk prioritisation framework for cultural heritage assets

Sevieri

Galasso

D’Ayala

et al. 2020

Nat. Hazards Earth Syst. Sci.

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“…This agreement is particularly interesting in the light of objective differences in class definition, portfolio of buildings considered, and the procedures employed for the estimation of groundshaking level. The differences for ultimate damage levels related to upgraded buildings classes (MBC3 and MBC4) might be somewhat justified by the worse-than-expected performance of irregular masonry buildings due to Amatrice August 24 th Earthquake [44]. The results demonstrated herein are subjected to the following limitations: a) it is assumed that the building class definition is going to adequately capture all the common building features (and hence correlations); b) there were very few accelerometric stations inside the polygon defining the portfolio of buildings considered; c) newer generations of GMPE might have allowed for more detailed modelling of site effects and an integrated characterization of spatial correlation; d) it is assumed that the damage survey is not subjected to error.…”

Section: Discussionmentioning

confidence: 99%

Empirical Fragility Curves Based on Random Ground Shaking Fields: Employing Copernicus-Ems Damage Grading Maps for 2016 Amatrice Sequence

Miano¹,

Jalayer²,

Forte³

et al. 2019

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

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Significant structural and non-structural damage suffered by residential buildings due to recent earthquakes worldwide provide a sad testimony to the vulnerability of the existing building stock. This evidence stresses the need to develop accurate seismic vulnerability assessment tools in the service of strategic planning and applicable at a territorial scale. The 2740 COMPDYN 2019 7 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

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“…Several historical earthquakes, such as 2003 Bam, 2009 L'Aquila, 2010 Chile, and 2016 Central Italy, among others, have reflected widespread damage to heritage structures (see e.g., [4][5][6][7]). The complex behavior of masonry structures is long discussed (e.g., [8][9][10][11][12], thus, the difficulties in seismic assessment are clear to the technical community.…”

Section: Introductionmentioning

confidence: 99%

Seismic Strengthening of the Bagh Durbar Heritage Building in Kathmandu Following the Gorkha Earthquake Sequence

Adhikari¹,

Jha²,

Gautam

et al. 2019

Buildings

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The so-called Greco-Roman monuments, also known as neoclassical monuments, in Nepal represent unique construction systems. Although they are not native to Nepal, they are icons of the early 19th century in the Kathmandu valley. As such structures are located within the heritage sites and historical centers, preservation of Greco-Roman monuments is necessary. Since many buildings are in operation and accommodate public and critical functions, their seismic safety has gained attention in recent times, especially after the Gorkha earthquake. This paper first presents the background of the Bagh Durbar monument, reports the damage observations, and depicts some repair and retrofitting solutions. Attention is paid to the implementation of the different phases of the structural characterization of the building, the definition of reference material parameters, and finally, the structural analysis made by using finite element models. The aim of the contribution consists of comparison of the adequacy of the finite element model with the field observations and design of retrofitting solutions to assure adequate seismic safety for typical Greco-Roman buildings in Nepal. Thus, this paper sets out to provide rational strengthening solutions compatible with the existing guidelines rather than complex numerical analyses.

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2016–2017 Central Italy Earthquake Sequence: Seismic Retrofit Policy and Effectiveness

Cited by 43 publications

References 5 publications

A multi-hazard risk prioritisation framework for cultural heritage assets

A multi-hazard risk prioritisation framework for cultural heritage assets

Empirical Fragility Curves Based on Random Ground Shaking Fields: Employing Copernicus-Ems Damage Grading Maps for 2016 Amatrice Sequence

Seismic Strengthening of the Bagh Durbar Heritage Building in Kathmandu Following the Gorkha Earthquake Sequence

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