Building survey forms for heterogeneous urban areas in seismically hazardous zones. Application to the historical center of Valparaíso, Chile

Jiménez, Belén; Pelà, Luca; Hurtado, Marcela

doi:10.1080/15583058.2018.1503370

Cited by 23 publications

(16 citation statements)

References 28 publications

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“…Zuccaro and Cacace 2015;Polese et al 2020); some initiatives for data collection of postearthquake damage such as AeDES (Baggio et al 2007;Nicodemo et al 2020); and focus on historical buildings (e.g. Jiménez, et al 2018). Moreover it has been used to collect features in the field or remotely using the IDCT tool (e.g.…”

Section: Bottom-up Approach: Individual Building Observationsmentioning

confidence: 99%

“…Its port is the main container and passenger port in Chile and vital for the country's economy. As described by Indirli et al (2011), Valparaiso shows a very heterogeneous building inventory in which its historic district was declared World Heritage Site by UNESCO in 2003 after recognizing its diverse urban layout and architecture (Jiménez, et al 2018).…”

Section: Context Of the Study Area: Valparaiso Chilementioning

confidence: 99%

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Epistemic uncertainty of probabilistic building exposure compositions in scenario-based earthquake loss models

Zapata¹,

Pittore²,

Cotton³

et al. 2021

Preprint

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In seismic risk assessment the sources of uncertainty associated to building exposure modelling have not received as much attention as other components related to hazard and vulnerability. We are introducing that the degree of knowledge of a building portfolio can be described within a Bayesian probabilistic approach to acknowledge the epistemic uncertainty of its composition (i.e. proportions per building class). We are investigating the impact of such uncertainty on earthquake loss models through a novel approach based on an exposure-oriented logic tree arrangement and scenario-based seismic risk simulations. We have found that the building class reconnaissance either from prior assumptions by desktop studies with aggregated data (top-down approach) or from building-by-building data collection (bottom-up approach), plays a fundamental role in statistical modelling of exposure. We successively show that the selection of the basic set of building classes is a major contribution to the uncertainties in the loss estimations given their dependence on specific fragility functions. If the set of fragility functions handle multiple spectral periods, cross-correlated ground motion fields are required for the vulnerability assessment which ultimately control the variability of the losses. When the exposure composition is poorly known due to, for instance, simplifications and assumptions over aggregated data, its absolute contribution to the loss uncertainties has been found to be larger than the one imposed by the spatially distributed cross-correlated ground motion fields. This work invites to redesign desktop exposure studies, while it also highlights the importance of a standardized iterative approach to exposure data collection and modelling.

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Section: Bottom-up Approach: Individual Building Observationsmentioning

confidence: 99%

Section: Context Of the Study Area: Valparaiso Chilementioning

confidence: 99%

Epistemic uncertainty of probabilistic building exposure compositions in scenario-based earthquake loss models

Zapata¹,

Pittore²,

Cotton³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The simplicity of the proposed numerical approach enables the development of time-effective seismic assessment of structural units present in the urban blocks of the historical centres. Jiménez, Pelà, and Hurtado (2018) propose specific building survey forms for the systematic collection of big amount of data necessary to feed large-scale vulnerability assessment in seismically hazardous zones. The study presents four specific survey forms for traditional structural typologies built with masonry, reinforced concrete, mixed steel-reinforced concrete, and timber.…”

Section: New Trends and Challenges In Large-scale And Urban Assessmenmentioning

confidence: 99%

New Trends and Challenges in Large-Scale and Urban Assessment of Seismic Risk in Historical Centres

Pelà

2018

International Journal of Architectural Heritage

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“…However, in order to both cope with such inefficiencies and to achieve the overall improvement of the urban system, generally limited economic resources are needed [9]. The inventory of buildings is an essential procedure for the acquisition of data for the evaluation of large-scale seismic vulnerability [10]. The available strategies usually take into consideration survey forms to collect information on urban buildings based mainly on the parameters necessary for the seismic vulnerability assessment, i.e., the system type resistant to lateral loading, the regularity, the maintenance conditions and the presence of existing damages.…”

Section: Introductionmentioning

confidence: 99%

Geo-Hazard-Based Approach for the Estimation of Seismic Vulnerability and Damage Scenarios of the Old City of Senerchia (Avellino, Italy)

Chieffo

Formisano

2019

Geosciences

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The large-scale seismic risk assessment is a crucial point for safeguarding people and planning adequate mitigation plans in urban areas. The current research work aims at analysing a sector of the historic centre of Senerchia, located in the province of Avellino, in order to assess the seismic vulnerability and damage of old masonry building compounds. First, the typological classification of the inspected building aggregates is developed using the CARTIS form developed by the PLINIVS research centre in collaboration with the Italian Civil Protection Department. The global seismic vulnerability assessment of the building sample is carried out using the macroseismic method according to the EMS-98 scale in order to identify the buildings most susceptible to seismic damage. Furthermore, 12 damage scenarios are developed by means of an appropriate seismic attenuation law. Finally, the expected damage scenarios considering the local hazard effects induced are developed in order to evaluate the damage increment, averagely equal to 50%, due to the seismic amplification of different soil categories.The type of housing is called the "house on a slope". As in the second war, the population did not want to abate the use of building on the rock, even the second housing expansion along the Vallone river saw the buildings erected on the rocky coast [22]. The 1980 Irpinia EarthquakeThe Irpinia earthquake occurred on 23 November 1980 at 7:34 pm. A strong shock (X degree of the Mercalli scale) lasting about 90 s, with a hypocenter of about 12 km depth, striking an area of 17,000 km 2 that extended from Irpinia to Vulture, straddling the provinces of Avellino, Salerno and Potenza [23].The municipalities most severely affected by the earthquake were Castelnuovo di Conza,The type of housing is called the "house on a slope". As in the second war, the population did not want to abate the use of building on the rock, even the second housing expansion along the Vallone river saw the buildings erected on the rocky coast [22].

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Building survey forms for heterogeneous urban areas in seismically hazardous zones. Application to the historical center of Valparaíso, Chile

Cited by 23 publications

References 28 publications

Epistemic uncertainty of probabilistic building exposure compositions in scenario-based earthquake loss models

Epistemic uncertainty of probabilistic building exposure compositions in scenario-based earthquake loss models

New Trends and Challenges in Large-Scale and Urban Assessment of Seismic Risk in Historical Centres

Geo-Hazard-Based Approach for the Estimation of Seismic Vulnerability and Damage Scenarios of the Old City of Senerchia (Avellino, Italy)

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