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Publications (21)
On the night of February 6, 2023, a major earthquake struck Turkey and nearby Syria, whose moment magnitude (M) was estimated at 7.8 (or 7.7, depending on the data source). It started what can be considered a seismic sequence with thousands of recorded earthquakes with magnitude larger than two, including another M6.7 event (or 6.6) occurring short...
Prelimiary report on engineering aspects of ground motion in the 2023 Turkey seismic sequence.
The RINTC (2015-2017) project was a three-year research program aimed at assessing the seismic reliability of code-conforming structures in Italy. It dealt with five structural typologies of residential and industrial buildings: reinforced concrete, masonry, precast reinforced concrete, steel, and base isolated reinforced concrete. To reach its goa...
It is well known that the seismic structural reliability is not explicitly controlled in design carried out according to seismic contemporary building codes; that is, those enforcing a simplified version of performance-based design. This is even more true for structures designed with obsolete seismic codes or without any seismic provisions at all,...
Eurocode 8 (EC8) allows the use of dynamic analysis for the design and assessment of structures and provides some constraints for the selection of acceleration time-histories as seismic input. However, when it comes to the selection of two-horizontal-component natural ground motion records, parts 1 and 2 of EC8, stipulate apparently different crite...
The most advanced analytical tool in earthquake engineering is non-linear dynamic analysis, which typically entails a computer model of a structure subjected to a set of real recorded accelerograms. Although computationally demanding, this type of analysis is gradually becoming the norm in seismic design and assessment applications. Seismic reliabi...
Analytical methods in performance-based earthquake engineering (PBEE) typically employ suites of ground motion records to run dynamic analysis of a structure's computer model. The sample size of ground motions used in this context, affects the estimation uncertainty that underlies the seismic risk metrics thus obtained. This article presents R2R-EU...
In merito alla selezione degli accelerogrammi per l'analisi dinamica delle strutture, le norme tecniche per le costruzioni italiane, così come l'Eurocodice 8 parte 1 (edifici), prescrivono la compatibilità media degli spettri selezionati con lo spettro di progetto. Nel caso di analisi di modelli tridimensionali, la pratica dell'ingegneria sismica i...
This paper illustrates REXELweb, an updated online version of REXEL, which is a tool for the automatic selection and scaling of spectrum-compatible ground-motions for dynamic analysis of structures. REXELweb allows to define target spectra according to user-definition or design provisions (Eurocode 8 and Italian building code), as well as to unifor...
In the context of seismic risk assessment as per the performance-based earthquake engineering paradigm, a probabilistic description of structural vulnerability is often obtained via dynamic analysis of a non-linear numerical model. It typically involves subjecting the structural model to a suite of ground-motions that are representative, as a sampl...
DYANAS is a MATHWORKS MATLAB®-based graphical user interface that uses the OpenSees finite element platform to perform nonlinear dynamic analysis of single-degree-of-freedom (SDOF) oscillators. The scope of this open-source software is to serve as a tool for earthquake engineering research.
The main advantages offered by the interface are ease in...
SPO2FRAG (Static PushOver to FRAGility) is introduced, a MATLAB-coded software tool for estimating structure-specific seismic fragility curves of buildings, using the results of static pushover analysis. The SPO2FRAG tool (available online at http://wpage.unina.it/iuniervo/doc_en/SPO2FRAG.htm) eschews the need for computationally demanding dynamic...
This article presents SPO2FRAG V1.0, the first (beta) version of the Static PushOver to FRAGility software. The SPO2FRAG software is an interactive and user-friendly tool that can be used for approximate, computer-aided calculation of building seismic fragility functions, based on static pushover analysis. It is coded in MATLAB® environment and is...
