Search results for "seismic assessment"

showing 6 items of 6 documents

Seismic assessment and retrofit of a concrete building highly damaged by reinforcement corrosion

2020

In existing concrete structures damaged by corrosion, the limited quantity and poor distribution of reinforcements as well as a lack of seismic details are common to many cases because they are built before the advent of seismic codes. In this paper the seismic assessment and retrofit of a concrete building sited in Sicily is presented in order to show a case-study of a corroded reinforced concrete structure to be trans-formed with new structural elements for functional reasons linked to Civil Protection. After many decades of complete abandonment, the structure was strengthened with different strategies, allied to the construction of new steel-concrete composite floors: concrete and steel …

Seismic assessment existing structures FRP steel structures
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Equivalent Non-Linearization of Hysteretic Systems by Means of RPS

2018

BackgroundThe analysis of elastoplastic systems with hardening (Bouc-Wen systems) under stochastic (seismic) loads needs the evaluation of higher order statistics even in the simplest case of normal distributed input. ObjectiveIn this paper, a non-linearization technique is proposed in order to evaluate the moments of any order of the response. MethodThis technique is developed by means of a nonlinear class of systems whose statistics are a priori known. The parameters of such systems can be chosen in such a way that the two systems are equivalent in a wide sense. Result & ConclusionIn the paper, the strategy to obtain the equivalence and the reliability of the results are discussed.

Thesaurus (information retrieval)Computer scienceSeismic assessment Hysteretic systems Potential systems Moment equations Equivalent non-linearization Stochastic calculus0211 other engineering and technologiesStochastic calculus020101 civil engineering02 engineering and technologyBuilding and Constructionlcsh:TH1-97450201 civil engineeringAlgebraSearch engineSeismic assessmentLinearization021105 building & constructionMoment equationslcsh:Building construction
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Shake-table testing of a stone masonry building aggregate: overview of blind prediction study

2023

Bulletin of earthquake engineering (2023). doi:10.1007/s10518-022-01582-x special issue: "Adjacent Interacting Masonry Structures"

Shake-table test550Incremental dynamic analysisincremental dynamic analysisheritagepushover analysismodelsddc:550masonry aggregatesBlind predictionHistorical masonry Masonry aggregates Incremental dynamic analysis Shake-table test Blind predictionCivil and Structural Engineeringhistorical masonryshake-table testwallsBuilding and ConstructionGeotechnical Engineering and Engineering GeologyBlind prediction; Historical masonry; Incremental dynamic analysis; Masonry aggregates; Shake-table testSettore ICAR/09 - Tecnica Delle CostruzioniGeophysicsseismic assessmentblind predictionHistorical masonryMasonry aggregatesstrengthperformance
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Incremental dynamic based fragility assessment of reinforced concrete structures: Stationary vs. non-stationary artificial ground motions

2017

Abstract Artificial and natural records are commonly employed by researches and practitioners to perform refined seismic assessments of structures. The techniques for the generation of artificial records and their effectiveness in producing signals which are significantly representative of real earthquakes are still debated as well as results of the consequent seismic assessment to expect from their application. The paper presents an in-depth comparative study highlighting the effect of employing different typologies of artificial ground motion records on seismic assessment results, especially addressing seismic fragility curves. Three sets of 50 stationary, nonstationary evenly modulated a…

EngineeringPeak ground accelerationIncremental dynamic analysi0211 other engineering and technologiesSoil Science020101 civil engineering02 engineering and technologyIncremental dynamic analysisSpectral accelerationIncremental Dynamic Analysis0201 civil engineeringFragilitySeismic assessmentReinforced concrete structuresNonlinear dynamic analysiNon-stationary random processeNonlinear dynamic analysisCivil and Structural EngineeringReinforced concrete structureFragility curves021110 strategic defence & security studiesbusiness.industryArtificial accelerogramsNon-stationary random processesStructural engineeringArtificial accelerograms; Fragility curves; Incremental dynamic analysis; Non-stationary random processes; Nonlinear dynamic analysis; Reinforced concrete structures; Civil and Structural Engineering; Geotechnical Engineering and Engineering Geology; Soil ScienceGeotechnical Engineering and Engineering GeologyReinforced concreteArtificial accelerograms Non-stationary random processes Nonlinear dynamic analysis Incremental dynamic analysis Fragility curves Reinforced concrete structuresNonlinear systemTime historyArtificial accelerogramFragility curvebusiness
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Stochastic Vulnerability Assessment of Masonry Structures: Concepts, Modeling and Restoration Aspects

2019

A methodology aiming to predict the vulnerability of masonry structures under seismic action is presented herein. Masonry structures, among which many are cultural heritage assets, present high vulnerability under earthquake. Reliable simulations of their response to seismic stresses are exceedingly difficult because of the complexity of the structural system and the anisotropic and brittle behavior of the masonry materials. Furthermore, the majority of the parameters involved in the problem such as the masonry material mechanical characteristics and earthquake loading characteristics have a stochastic-probabilistic nature. Within this framework, a detailed analytical methodological approac…

Artificial Neural Networkfailure criteriaComputer scienceRestoration mortarStructural system0211 other engineering and technologiesVulnerability020101 civil engineering02 engineering and technologylcsh:Technology0201 civil engineeringlcsh:Chemistryfragility analysisFragilitySeismic assessmentVulnerability assessmentForensic engineeringGeneral Materials ScienceMasonry structurelcsh:QH301-705.5InstrumentationArtificial Neural NetworksmonumentsFluid Flow and Transfer Processes021110 strategic defence & security studieslcsh:Tbusiness.industryProcess Chemistry and TechnologyGeneral EngineeringProbabilistic logicMonumentMasonrylcsh:QC1-999Computer Science ApplicationsCultural heritageSettore ICAR/09 - Tecnica Delle Costruzionilcsh:Biology (General)lcsh:QD1-999restoration mortarslcsh:TA1-2040Fragility analysiseismic assessmentlcsh:Engineering (General). Civil engineering (General)businessdamage indexlcsh:Physicsmasonry structuresstochastic modelingApplied Sciences
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Numerical modelling of out-of-plane response of infilled frames: State of the art and future challenges for the equivalent strut macromodels

2017

Abstract Infill-frame interaction constitutes a still open question both in research and in practicing engineering. Computational models used to predict this interaction are, in most cases, addressing the estimation of the response of the infilled frames when subjected to actions parallel to their plane. However, the observation of the post-earthquake damage has demonstrated that infills, weakened by the in-plane actions, may fail out-of-plane increasing the risks associated to the earthquake scenarios. In spite of this, different studies have shown that infills, if properly designed and supported by the frame, exhibit a significant strength and displacement capacity when called to resist t…

Numerical testingEngineeringInfilled frames0211 other engineering and technologies020101 civil engineering02 engineering and technology0201 civil engineeringOut of planeOut-of-planeSeismic assessmentMasonryArching actionCivil and Structural Engineering021110 strategic defence & security studiesComputational modelbusiness.industryIn-planeStructural engineeringMasonryInfilled framesSettore ICAR/09 - Tecnica Delle CostruzioniNonlinear systemIn planeArching action; In-plane; Infilled frames; Masonry; Out-of-plane; Seismic response;businessInfilled frameSeismic response
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