Seismic Vulnerability Assessment and Loss Estimation of an Urban District of Timisoara

Chieffo, Nicola; Moșoarcă, Marius; Formisano, Antonio; Apostol, Iasmina

doi:10.1088/1757-899x/471/10/102070

Cited by 17 publications

(6 citation statements)

References 7 publications

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“…There are studies on estimating physical and social seismic vulnerabilities in urban areas in the literature ([e.g., References [3][4][5][6][7][8][9]). Some of the studies in the literature use existing analytical relations or vulnerability indices in a spatial decision support system (SDSS) framework where the pre-defined vulnerability codes for buildings are available for estimating buildings' damages ([e.g., References [8,[10][11][12][13][14][15][16][17]).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Enhanced Dempster-Shafer Theory for Uncertainty Modeling in a GIS-Based Seismic Vulnerability Assessment Model, Case Study—Tabriz City

Delavar

Sadrykia

2020

IJGI

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Earthquake is one of the natural disasters which threaten many lives every year. It is impossible to prevent earthquakes from occurring; however, it is possible to predict the building damage, human and property losses in advance to mitigate the adverse effects of the catastrophe. Seismic vulnerability assessment is a complex uncertain spatial decision making problem due to intrinsic uncertainties such as lack of complete data, vagueness in experts’ comments and uncertainties in the numerical data/relations. It is important to identify and model the incorporated uncertainties of seismic vulnerability assessment in order to obtain realistic predictions. Fuzzy sets theory can model the vagueness in weights of the selected criteria and relationships of the criteria with building damage. Dempster’s combination rule is useful for fusion of information on the vulnerability of the buildings which leads to decreased uncertainty of the results. However, when there is a conflict among information sources, classical Dempster rule of combination is not efficient. This paper analyses the uncertainty sources in a geospatial information system (GIS)-based seismic vulnerability assessment of buildings and then focuses on assessing the efficiency of Dempster rule of combination in the fusion of the information sources for the seismic vulnerability assessment. Tabriz, a historical and earthquake prone city in the north west of Iran was selected as the study area. The results verified that some inconsistencies among information sources exist which are important to be considered while proposing a method for the fusion of the information in order to obtain vulnerability assessments with less uncertainty. Based on the assessed building damage, the number of probable victims was estimated. The produced physical and social seismic vulnerability maps provide the required information for urban planners and administrators to reduce property and human losses through pre-earthquake mitigation and preparedness plans efficiently.

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Section: Introductionmentioning

confidence: 99%

Assessment of Enhanced Dempster-Shafer Theory for Uncertainty Modeling in a GIS-Based Seismic Vulnerability Assessment Model, Case Study—Tabriz City

Delavar

Sadrykia

2020

IJGI

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“…The first approach allows for the estimation of the global vulnerability through quick analyses principally based on vulnerability forms widely used all over Europe (Ferreira et al, 2013;Brando et al, 2017;Formisano et al, 2017;Tiberti and Milani, 2017;Chieffo et al, 2018). This methodology allows to univocally correlate the building seismic vulnerability index, I v , deriving from filling specific survey forms, with the possible expected damage (Lagomarsino and Giovinazzi, 2006), which is expressed through the mean damage grade, µ D , following the European Macroseismic Scale, EMS-98 (Grünthal, 1998).…”

Section: Introductionmentioning

confidence: 99%

Comparative Seismic Assessment Methods for Masonry Building Aggregates: A Case Study

Chieffo

Formisano

2019

Front. Built Environ.

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Recent seismic events produced considerable socioeconomic losses. An important step for the reduction and mitigation of seismic risk in urban areas with a high population density is the assessment of global vulnerability of clustered buildings. The proposed work aims at appraising the seismic vulnerability of building aggregates within the historical center of Arsita, damaged by the L'Aquila earthquake (2009 April 6th), through a multi-level approach deriving from the application of different estimation procedures. In particular, the seismic vulnerability quantification has been done by comparing three distinct methods, namely the macroseismic approach according to the EMS-98 scale, the Vulnus methodology, developed by the University of Padua, and the mechanical approach derived from using the 3Muri software. The expected damage has been estimated in terms of fragility curves, respectively, for the entire buildings compound and the individual structural units located in the corner and intermediate positions, in order to evaluate the beneficial or detrimental aggregate effect on the seismic behavior of individual constructions examined.

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“…The damages observed after the 1991 earthquakes have shown that the Type of failure mechanisms occurred in the epicentral area (cities: Banloc, Voiteni and Ciacova, located 30-50 km far from Timisoara) have been characterised by a high level of damages to vaults, arches, towers and chimneys, as reported in Moreover, the city of Timisoara is the biggest city located in the Banat seismic region, which is the second most important seismic zone of Romania ( Fig. 3a), with an expected PGA equal to 0.20 g considering a return period, T r , of 475 years [13,14]. In Timisoara, there are two active seismic faults, as reported in Fig.…”

Section: Seismicity Of Banat Regionmentioning

confidence: 62%

Integrated Empirical-mechanical Seismic Vulnerability Analysis Method for Masonry Buildings in Timișoara: Validation based on the 2009 Italian Earthquake

Chieffo¹,

Onescu²,

Formisano³

et al. 2020

TOCIEJ

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Background: Timisoara is one of the most important Romanina cities, located in the Banat area and characterised by shallow earthquakes with high ground motion vertical component. The seismicity of the area, in accordance with the P-100 Romanian Code, is affected by medium-high hazard level with an expected maximum PGA of 0.20 g. From a historical-artistic point of view, the city of Timisoara is full of monumental buildings of inestimable values and it was declared as the European Capital of Culture for 2021. Aims: The present work aims to investigate the seismic vulnerability of masonry buildings located in the districts of Fabric and Iosefin, which were grouped in typology classes based on the EMS-98 scale according to their geometrical and structural characteristics. Methods: The performed vulnerability analysis is based on a combined empirical-mechanical procedure to estimate the propensity at the damage of the buildings surveyed. Results: A specific formulation was proposed for typological vulnerability curves of building classes of the examined area, which were calibrated on the basis of the damages detected after occurred earthquakes. Conclusion: The proposed formulation was validated from the application to an urban sector of the municipality of San Pio delle Camere (Italy), which was damaged after the 2009 Abruzzo earthquake.

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Seismic Vulnerability Assessment and Loss Estimation of an Urban District of Timisoara

Cited by 17 publications

References 7 publications

Assessment of Enhanced Dempster-Shafer Theory for Uncertainty Modeling in a GIS-Based Seismic Vulnerability Assessment Model, Case Study—Tabriz City

Assessment of Enhanced Dempster-Shafer Theory for Uncertainty Modeling in a GIS-Based Seismic Vulnerability Assessment Model, Case Study—Tabriz City

Comparative Seismic Assessment Methods for Masonry Building Aggregates: A Case Study

Integrated Empirical-mechanical Seismic Vulnerability Analysis Method for Masonry Buildings in Timișoara: Validation based on the 2009 Italian Earthquake

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