Engineering design earthquakes from multimodal hazard disaggregation

Iervolino, Iunio; Chioccarelli, Eugenio; Convertito, Vincenzo

doi:10.1016/j.soildyn.2011.05.001

Cited by 63 publications

(51 citation statements)

References 14 publications

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“…Both systems are supposed located in Sulmona (close to L'Aquila, in central Italy). PSHA for this site (Figure 7, left) was carried out via the FORTRAN code also used in [19]. In the software, the seismogenic source zones of Italy are those of [20], while seismic parameters of each zone are those from [21,22].…”

Section: Seismic Hazard and Im Distributionmentioning

confidence: 99%

“…Figure 7 (left) shows the source zones considered, while Figure 7 (right) provides the resulting distribution of intensity at the site given the occurrence of an earthquake. Further details about PSHA for the site, and a summary of the source zone parameters, may be found in [19]. However, a relevant information for this study is that the rate of occurrence of earthquakes within the magnitude bounds of the considered seismic sources, and then at the site, is ν E = 1.95 [events/year].…”

Section: Seismic Hazard and Im Distributionmentioning

confidence: 99%

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Markovian modeling of seismic damage accumulation

Iervolino

Giorgio²,

Chioccarelli

2015

Earthq Engng Struct Dyn

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SUMMARYAnalysis of civil structures at the scale of life-cycle requires stochastic modeling of degradation. Phenomena causing structures to degrade are typically categorized as aging and point-in-time overloads. Earthquake effects are the members of the latter category this study deals with in the framework of performance-based earthquake engineering (PBEE). The focus is structural seismic reliability, which requires modeling of the stochastic process describing damage progression, because of subsequent events, over time. The presented study explicitly addresses this issue via a Markov-chain-based approach, which is able to account for the change in seismic response of damaged structures (i.e. state-dependent seismic fragility) as well as uncertainty in occurrence and intensity of earthquakes (i.e. seismic hazard). The state-dependent vulnerability issue arises when the seismic hysteretic response is evolutionary and/or when the damage measure employed is such that the degradation increment probabilistically depends on the conditions of the structure at the time of the shock. The framework set up takes advantage also of the hypotheses of classical probabilistic seismic hazard analysis, allowing to separate the modeling of the process of occurrence of seismic shocks and the effect they produce on the structure. It is also discussed how the reliability assessment, which is in closed-form, may be virtually extended to describe a generic age-and state-dependent degradation process (e.g. including aging and/or when aftershock risk is of interest). Illustrative applications show the options to calibrate the model and its potential in the context of PBEE.

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Section: Seismic Hazard and Im Distributionmentioning

confidence: 99%

Section: Seismic Hazard and Im Distributionmentioning

confidence: 99%

Markovian modeling of seismic damage accumulation

Iervolino

Giorgio²,

Chioccarelli

2015

Earthq Engng Struct Dyn

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“…return periods, was disaggregated. This allowed to determine the design earthquakes for each T R and both IMs, using the same procedure as in Iervolino et al [15]. Table 1 reports the M and R bins and strong motion databases in which records were selected via the REXEL software [16].…”

Section: Seismic Hazard and Ground Motionsmentioning

confidence: 99%

Structural Modelling Issues in Seismic Performance Assessment of Industrial Steel Buildings

Corte¹,

Iervolino²,

Petruzzelli³

2014

Proceedings of the 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…Because when selecting a set of accelerograms for structural analysis the main objective is to reflect the relevant hazard scenarios at the site, for example from disaggregation (e.g., Iervolino et al 2011), REXELite allows to select suites which also belong to user-defined magnitude (M) and source-to-site distance (R) bins, and to the same site class of the location of the structure, or to any site class. ITACA may be searched for spectrum-matching sets of records which are original (unscaled) or ground motions linearly scaled in amplitude.…”

Section: Introductionmentioning

confidence: 99%

Engineering ground motion record selection in the ITalian ACcelerometric Archive

Iervolino

Galasso

Paolucci

et al. 2011

Bull Earthquake Eng

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This paper introduces REXELite, an internet version of REXEL, a software for automatic selection of ground motion suites for nonlinear dynamic analysis of structures. REXELite was developed with the aim of integrating an advanced earthquake records’ repository, such as the ITalianACcelerometricArchive (ITACA), with a tool to define seismic input for engineering seismic analysis according to international standards (with priority to Europe). In fact, REXELite allows to define target design spectra according either to Eurocode 8 or to the Italian building code, and to search ITACA for suitable sets of seven records (comprised of one or two horizontal ground motion components) matching such target spectra: on average, in a user-specified period range, and with the desired tolerance. The records in the set also have, individually and according to some criteria, the most similar spectral shape with respect to that of the code. Selection options include magnitude, source-to-site distance, soil conditions and, if desired, linear scaling of records to reduce further record-to-record\ud variability of the selected suite

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Engineering design earthquakes from multimodal hazard disaggregation

Cited by 63 publications

References 14 publications

Markovian modeling of seismic damage accumulation

Markovian modeling of seismic damage accumulation

Structural Modelling Issues in Seismic Performance Assessment of Industrial Steel Buildings

Engineering ground motion record selection in the ITalian ACcelerometric Archive

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