A5078620170- Seismic Performance and Analysis
- Structural Health Monitoring Techniques
- earthquake and tectonic studies
- Seismic Waves and Analysis
- Masonry and Concrete Structural Analysis
- Seismology and Earthquake Studies
- Structural Response to Dynamic Loads
- Probabilistic and Robust Engineering Design
- Concrete Corrosion and Durability
- Structural Behavior of Reinforced Concrete
- Earthquake Detection and Analysis
- Infrastructure Resilience and Vulnerability Analysis
- Wind and Air Flow Studies
- Geotechnical Engineering and Underground Structures
- Gas Sensing Nanomaterials and Sensors
- Seismic and Structural Analysis of Tall Buildings
- Structural Engineering and Vibration Analysis
- Risk and Safety Analysis
- Landslides and related hazards
- Infrastructure Maintenance and Monitoring
- Flood Risk Assessment and Management
- Disaster Management and Resilience
- Seismic Imaging and Inversion Techniques
- IoT Networks and Protocols
- Reservoir Engineering and Simulation Methods
University of Naples Federico II
2016-2025
Istituto Universitario di Studi Superiori di Pavia
2023-2025
Ingegneria dei Trasporti (Italy)
2014-2024
Stanford University
2005
This study addresses the question of selection and amplitude scaling accelerograms for predicting nonlinear seismic response structures. Despite current practices record according to a specific magnitude-distance scenario common level, neither aspect this process has received significant research attention ascertain benefits or effects these on conclusions. paper hypothesizes that usual principal seismological characteristics nor records matters It then investigates under what conditions...
The study presented in this paper addresses the question of which nonlinear demand measures are sensitive to ground motion duration by statistical analyses several case studies. A number single degree freedom (SDOF) structures were selected considering: (1) four oscillation periods; (2) three evolutionary and non-evolutionary hysteretic behaviours; (3) two target ductility levels. Effects investigated, dynamic analysis, with respect six different indices ranging from displacement ratio...
The increasing interest in performance-based earthquake engineering has promoted research on the improvement of hazard-consistent seismic input definition and advanced criteria for strong motion record selection to perform nonlinear time history analyses. Within ongoing activities improve representation actions develop tools as a support practice, this study addresses displacement-spectrum-compatible real ground motions, with special reference Italy. This involved (1) specific target...
Among all the possible options to define seismic input for structural analysis, natural recordings are emerging as most attractive. Easily accessible waveform databases available and evidence shows that only a relatively limited number of criteria has be considered in selection scaling get an unbiased estimation demand. Like many codes worldwide, Eurocode 8 (EC8) allows use real ground-motion records assessment structures. The main condition satisfied by chosen set is average elastic...
Abstract Rupture directivity effects in ground motion are known since many years to both seismologists and earthquake engineers, i.e. sites that a particular geometrical configuration with respect the rupture, velocity fault‐normal signals may show large pulse which occurs at beginning of record contains most energy. The results waveforms different from ordinary motions recorded far field or conditions not favorable directivity. Current attenuation laws able capture such effect well, if all,...
This paper presents and discusses some research results related to the seismic failure risk of standard, residential industrial, buildings designed for damage, life-safety according Italian code, which is somewhat similar Eurocode 8. The five considered structural typologies are as follows: masonry, cast-in-place reinforced concrete, precast steel, base-isolated buildings. archetype structures have been standard practice at three sites, representative hazard across country. Seismic defined...
SUMMARY Near‐source pulse‐like records resulting from rupture's directivity have been found to depart so‐called ordinary ground motions in terms of both elastic and inelastic structural seismic demands. In fact, response spectra may be strong if compared with what is expected common motion prediction equations. Moreover, because not all spectral ordinates are affected uniformly, a peculiar shape, an especially amplified region depending on the pulse period, follow. Consequently, demand show...
Abstract Spatial modeling of ground motion intensity measures (IMs) is required for risk assessment spatially distributed engineering systems. For example, when a lifeline system concern, classical site-specific hazard tools, which treat IMs at different locations independently, may not be adequate to accurately assess the seismic risk. In fact, in this case, as random field required; it basically consists assigning correlation structure IM interest. This work focuses on semiempirical...
Abstract 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 data source). It started what can be considered seismic sequence with thousands recorded earthquakes larger than two, including another M6.7 event 6.6) occurring shortly after, one M7.5 7.6) day half later. The area in south‐eastern part hit by is considered, according to probabilistic models, most hazardous wider region. This...
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 residential and industrial buildings: reinforced concrete, masonry, precast steel, base isolated concrete. To reach its goals, several tens featuring same configuration were designed different sites, characterized by hazard considering two soil site conditions. failure risk (i.e. rate) buildings evaluated...
Abstract While deterministically predicting the time and location of earthquakes remains impossible, earthquake forecasting models can provide estimates probabilities occurring within some region over time. To enable informed decision‐making civil protection, governmental agencies, or public, Operational Earthquake Forecasting (OEF) systems aim to authoritative forecasts based on current activity in near‐real Establishing OEF involves several nontrivial choices. This review captures state...
Abstract: The selection of a strategy to seismically upgrade an existing building is difficult problem. In fact, several different technologies are available this aim nowadays. Furthermore, many generally conflicting options have be considered assess the performance each alternative. Decision support systems like so‐called multi‐criteria decision‐making (MCDM) methods may useful in making, as much possible, objective and rational choice. This article investigates applicability effectiveness...
Near-source ground-motion records affected by directivity may show unusual features in the signal resulting low-frequency cycle pulses velocity time history, especially fault-normal component. Such an effect causes seis- mic demand for structures to deviate from that of so-called ordinary records. This circumstance be particularly hazardous structural engineering applications if it is not properly accounted for. In fact, current attenuation laws are able capture such effects well, at all,...
Abstract Quantification of regional seismic risk is based on spatially correlated random fields and requires modeling the joint distribution ground‐motion intensity measures at all sites interest. In particular, when a portfolio buildings or transportation/distribution network (lifeline) concern, correlation models for elastic spectral acceleration (SA) may also be required in order to estimate expected loss case events. The presented study focuses semi‐empirical estimation spatial as...
Summary State‐of‐the‐art approaches to probabilistic assessment of seismic structural reliability are based on simulation behavior via nonlinear dynamic analysis computer models. Simulations carried out considering samples ground motions supposedly drawn from specific populations signals virtually recorded at the site interest. This serves produce response evaluate failure rate, which in turn allows compute risk (probability) a time interval procedure alone implies that uncertainty...