Combining USGS ShakeMaps and the OpenQuake‐engine for damage and loss assessment

Silva, Vítor; Horspool, Nick

doi:10.1002/eqe.3154

Cited by 37 publications

(16 citation statements)

References 43 publications

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“…In this process, USGS ShakeMaps were used with the global exposure dataset and the previously described fragility and vulnerability functions to estimate the number of collapsed buildings and direct economic losses, respectively. The framework employed for these calculations is described in Silva and Horspool (2019). A comparison between the estimated and observed losses (adjusted to 2017) is depicted in Figure 10.…”

Section: Seismic Risk Assessmentmentioning

confidence: 99%

Development of a global seismic risk model

et al. 2020

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Since 2015, the Global Earthquake Model (GEM) Foundation and its partners have been supporting regional programs and bilateral collaborations to develop an open global earthquake risk model. These efforts led to the development of a repository of probabilistic seismic hazard models, a global exposure dataset comprising structural and occupancy information regarding the residential, commercial and industrial buildings, and a comprehensive set of fragility and vulnerability functions for the most common building classes. These components were used to estimate probabilistic earthquake risk globally using the OpenQuake-engine, an open-source software for seismic hazard and risk analysis. This model allows estimating a number of risk metrics such as annualized average losses or aggregated losses for particular return periods, which are fundamental to the development and implementation of earthquake risk mitigation measures.

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Section: Seismic Risk Assessmentmentioning

confidence: 99%

Development of a global seismic risk model

et al. 2020

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“…There is also a multitude of open tools with intuitive graphical user interfaces capable of performing earthquake scenarios or probabilistic seismic risk assessment (e.g., ELER, SELENA, CAPRA, OpenQuake—Silva et al 2014). An application of the OpenQuake engine and USGS ShakeMap system to assess earthquake damage and losses in Italy and New Zealand is described in Silva and Horspool (2019), while a simulation of past events for the purposes of evaluating earthquake models is described in Villar-Vega and Silva (2017).…”

Section: Validation and Verification Of Fragility Modelsmentioning

confidence: 99%

Current Challenges and Future Trends in Analytical Fragility and Vulnerability Modeling

et al. 2019

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The lack of empirical data regarding earthquake damage or losses has propelled the development of dozens of analytical methodologies for the derivation of fragility and vulnerability functions. Each method will naturally have its strengths and weaknesses, which will consequently affect the associated risk estimates. With the purpose of sharing knowledge on vulnerability modeling, identifying shortcomings in the existing methods, and recommending improvements to the current practice, a group of vulnerability experts met in Pavia (Italy) in April 2017. Critical topics related to the selection of ground motion records, modeling of complex real structures through simplified approaches, propagation of aleatory and epistemic uncertainties, and validation of vulnerability results were discussed, and suggestions were proposed to improve the reliability and accuracy in vulnerability modeling.

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“…frames), assuming that the events describing the attainment of a prescribed damage state for the different frames are statistically compatible and independent. As confirmed in recent studies (Silva and Horspool 2019), the availability of mathematical functions connecting vibrating period and fragility curves represents a powerful tool, not commonly provided in other studies concerning fragility functions. Indeed, it could be adopted to carry out statistical calculations based on vulnerability models, like seismic loss and damage assessments, considering the uncertainty in the period of vibration.…”

Section: Introductionmentioning

confidence: 99%

PRESSAFE-Disp: A Method For The Fast Seismic Assessment of Existing Precast RC Buildings After The Emilia Earthquake Of May 2012

Bovo

Praticò

Savoia

2021

Preprint

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The existing precast reinforced concrete structures, especially those not specifically designed against the earthquakes, have proved to be inadequate to withstand the remarkable seismic demands related to the presence of heavy roof elements. In fact, the cantilever columns entailing large top displacements and the poor devices adopted to connect different precast elements have shown high sensitivity to seismic actions. After the lesson learned from the recent Emilia earthquake of May 2012, causing many collapses and severe damage, reliable seismic design criteria have been established for the design of new precast structures and for the strengthening of the existing ones. Despite this, a large percentage of the existing precast buildings in the Italian territories actually has not been object of interventions and remains in an unsafe condition with regards to the seismic actions. In this context, the methods for a rapid seismic assessment can be very helpful both to estimate the current safety level of large building stocks and to plan the necessary strengthening interventions, possibly at the wide scale of an industrial area. To this aim, the paper proposes a new method, named PRESSAFE-disp (PRecast Existing Structure Seismic Assessment by Fast Evaluation-displacements), for the fast evaluation of the fragility curves of precast structures. The method follows the approach of the PRESSAFE method, but different damage criteria have been introduced in order to take into account the relative displacements and the sliding between different precast elements. The damage criteria considered, applicable to both structural elements and perimeter cladding elements conceived as non-structural elements, have been properly selected in order to capture the damage mechanisms observed during the several building inspections conducted by the authors in the aftermath of the 2012 Emilia earthquakes. In the present configuration, the method allows a comprehensive explanation of the seismic behaviour of the existing precast buildings and could be effectively adopted, for example, in earthquake loss estimations and seismic risk assessments of large Italian industrial areas, as well as of wide seismic-prone territories of the Mediterranean area.

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Combining USGS ShakeMaps and the OpenQuake‐engine for damage and loss assessment

Cited by 37 publications

References 43 publications

Development of a global seismic risk model

Development of a global seismic risk model

Current Challenges and Future Trends in Analytical Fragility and Vulnerability Modeling

PRESSAFE-Disp: A Method For The Fast Seismic Assessment of Existing Precast RC Buildings After The Emilia Earthquake Of May 2012

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