CAESAR II Tool: Complementary Analyses for Emergency Planning Based on Seismic Risks Impact Evaluations

Zuccaro, Giulio; Gregorio, Daniela De; Leone, Mattia Federico; Sessa, Salvatore; Nardone, Stefano; Perelli, Francesca Linda

doi:10.3390/su13179838

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…The second group, on the other hand, is specific to the behavior of the building because of a volcanic eruption, as it collects information on the elements of vulnerability with respect to fall deposits (roofs) and pyroclastic flows (openings and infills). The PLINIVS form is described in detail in [32] and can be downloaded at the link [33]. The format of the surveyed data and the coding of the identifiers are organized so that the information collected can be easily entered into the PLINIVS Center data base.…”

Section: Survey Activitymentioning

confidence: 99%

“…Therefore, the definition of the Total Potential Energy can be reformulated as depending on , as (7) whose solution is found through: (8) The computation of the maximum admissible load therefore consists in the search of the maximum scalar multiplier for which the Total Potential Energy is bounded from below, as…”

Section: Local Collapse Curve Constructionmentioning

confidence: 99%

“…The exposure represents the quantitative and qualitative distribution of the elements at risk in the investigated area. Risk and vulnerability assessment at national scale is a topic currently widely addressed in the literature [1,2,3,4,5,6,7,8,9], with the aim of providing general analysis to the civil protection department and supporting decisions on the management and distribution of resources on the territory. The need to respond to a national scale makes it necessary to use sometimes imprecise or approximate data, for example the ISTAT data [10] for the definition of exposure, which have the advantage of uniformly covering the entire national territory.…”

Section: Introductionmentioning

confidence: 99%

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An Hybrid Methodology for the Definition of Localized Collapse Curves for Unreinforced Masonry Structures

De Gregorio,

Perelli,

Olivieri

et al. 2023

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

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The estimation of the potential number of buildings damaged after a seismic event is a fundamental step both for optimal management of resources in the emergency phase and for accurate planning of mitigation measures in time of peace. The collapsed buildings generate the higher damage in terms of human life and economic losses. Also, the collapse of buildings can also cause the interruption of road sections and paths, and consequently limit the rescue by workers and volunteers. Therefore, a localized estimation of possible collapses represents a useful tool in the emergency management planning phase. This assessment depends on the distribution of the building typologies present in the area invested by the earthquake and on their possible answer to the event. This work shows a methodology to build a local vulnerability model for unreinforced masonry structures, which returns collapse curves calibrated on the typological distribution of the buildings of a specific geographical area. This methodology exploits an energy-based modeling of in-plane fragility for 2D ultimate capacity of masonry structures, that provides the collapse acceleration values based on the typological characteristics of the analyzed sample. This analytical application is combined with a data collection activity that provides the frequencies, on the investigated area, of the typological characteristics considered in the modeling. The statistical distribution of the collapse accelerations weighted on the frequency of occurrence of these typological characteristics returns the localized collapse curve. 2505COMPDYN 2023 9 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.

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Section: Survey Activitymentioning

confidence: 99%

Section: Local Collapse Curve Constructionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Hybrid Methodology for the Definition of Localized Collapse Curves for Unreinforced Masonry Structures

De Gregorio,

Perelli,

Olivieri

et al. 2023

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

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“…In other words, the state of the system and the actions taken throughout each phase of the disaster risk management cycle (that includes mitigation, preparedness response, and recovery) determine how resilient the urban system would be [15]. Therefore, carrying out interventions to lessen the built environment's vulnerability before the event [16,17], planning an effective emergency management strategy [18], and executing quick and efficient recovery [19] are all effective measures that raise the system's resilience. The actions performed in each phase not only affect the overall resilience of the urban system but also the ability of the urban system in subsequent phases to continue functioning and take the planned actions [20].…”

Section: Introductionmentioning

confidence: 99%

EQ-DIRECTION Procedure towards an Improved Urban Seismic Resilience: Application to the Pilot Case Study of Sanremo Municipality

Cattari,

Ottonelli,

Mohammadi

2024

Sustainability

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This paper discusses the critical importance of effective mitigation policies to enhance earthquake resilience in urban systems, especially in light of recent seismic events in Italy. The Italian Civil Protection Department (ICPD) has delineated specific Limit Conditions (LCs) for urban settlements, serving as benchmarks for targeted mitigation policies, and akin to Limit States for buildings in Codes. While the ICPD has already developed operational procedures for some LCs, concentrating on evaluating the structural operational efficiency of strategic functions during emergency management, only a conceptual outline exists for other LCs involving preparedness and recovery/reconstruction phases. To address this gap, this paper introduces the EQ-DIRECTION (EarthQuake Disaster-REsilient City acTIOn plan) procedure. This method aims to analyze and assess the “Limit Condition for Safeguarding the Existence of the Settlement” (referred to as SLC). The procedure entails identifying the “minimum urban system” required for effective recovery and evaluating the performance of this system in terms of structural damage and economic losses against the SLC requirement. The practical application of this methodology to a real-world case study in Sanremo municipality on the western coast of Liguria (Italy) demonstrates the feasibility and potential effectiveness of the procedure for earthquake resilience in urban planning and management.

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Relationships between empirical damage and direct/indirect costs for the assessment of seismic loss scenarios

Ludovico

Martino

Prota

et al. 2021

Bull Earthquake Eng

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The definition of relationships between damage and losses is a crucial aspect for the prediction of seismic effects and the development of reliable models to define risk maps, loss scenarios and mitigation strategies. The paper focuses on the analysis of post-earthquake empirical data to define relationships between buildings’ damage expressed as usability rating or as global damage state and the associated costs for repair (i.e. direct costs) or for population assistance (i.e. a part of total indirect costs). The analysis refers to the data collected on residential buildings damaged by 2009 L'Aquila earthquake. For different usability rating or damage states, the paper presents the costs expressed in terms of percentage with respect to the reference unit cost of a new building (%Cr and %Ca for repair and population assistance costs, respectively). In particular, the costs analysis refers to undamaged, lightly or severely damaged buildings classified according to usability rating (i.e. A, B-C or E according to Italian classification) or to five different global Damage States (DSs). DSs comply with European Macroseismic Scale (EMS-98) and derive from literature available matrices properly defined to convert empirical damage to structural and non-structural components into building global damage. The %Cr probability density functions and relevant statistics derive from the analysis of actual data of post-earthquake reconstruction process, while, to determine those related to %Ca, a deep analysis of population assistance types, person/month assistance cost for each assistance form, and a methodology to associate such costs to each building are herein presented and discussed. Finally, the paper presents a relationship calibrated on empirical data to directly correlate repair costs on a building with assistance costs to their occupants. The relationships between empirical damage and direct and indirect costs herein presented are of paramount importance because they allow reliable loss scenarios to be defined by simply using literature fragility curves (defined according to empirical or mechanical approaches) aimed at evaluating the probability of exceeding different usability rating or damage states of existing buildings.

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CAESAR II Tool: Complementary Analyses for Emergency Planning Based on Seismic Risks Impact Evaluations

Cited by 8 publications

References 27 publications

An Hybrid Methodology for the Definition of Localized Collapse Curves for Unreinforced Masonry Structures

An Hybrid Methodology for the Definition of Localized Collapse Curves for Unreinforced Masonry Structures

EQ-DIRECTION Procedure towards an Improved Urban Seismic Resilience: Application to the Pilot Case Study of Sanremo Municipality

Relationships between empirical damage and direct/indirect costs for the assessment of seismic loss scenarios

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